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Building Tips and technical articles. => 1/2 A building. => Topic started by: frank carlisle on December 17, 2006, 06:10:27 AM

Title: BHM 1/2A auto gyro
Post by: frank carlisle on December 17, 2006, 06:10:27 AM
http://blackhawkmodels.com/gyro.html

The link above will show you the new 1/2A autogyro being offered by Black Hawk Models.

I just got two of them from BHM and plan on building one pretty soon.

Here are some pix of the kit. Are any of you guys interested?

I think it would qualify for a Musciano Contest and be a unique entry.

[gvideo=400,326]7110940197024098711[/gvideo]

Google has started a new policy of screening so it will be a few hrs before showing.
Title: Re: BHM 1/2A auto gyro
Post by: Leroy Heikes on December 17, 2006, 08:56:00 AM
Frank;
    I had posted pictures of the BHM auto Gyro in the scale section. Since you have an extra kit I'll take it.

Leroy   **) **) **) **) **) **) **) **) **) **) **) **) **)
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 17, 2006, 09:43:14 AM
Leroy,

I'll send the kit out tomorrow. I still have your address. Do you still have mine? The kit price is listed  $32.95. Send that I'll cover the shipping.

Hey man I hope you have a digital camera under the tree next week!! Even the cheapest digital camera from Wal-Mart will work better than the one you have now. Since I won't be starting my auto-gyro till next week sometime maybe we could post pix of our models as we go.

Attention Fellow 1/2A modelers--- If you'd like to get in on this I'll cover shipping and have the Auto-Gyro sent directly to you from the factory. Just post on this thread to let me know.
Title: Re: BHM 1/2A auto gyro
Post by: bob branch on December 17, 2006, 06:12:25 PM
frank

Any odds on whether it will fly inverted?

bob
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 17, 2006, 06:29:07 PM
LONG BOB LONG...................................

It should be pretty cool though and certainly an interesting diversion at the circle.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on December 17, 2006, 06:38:07 PM
frank

Any odds on whether it will fly inverted?

bob

I'll take that bet at any odds...it will not.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 18, 2006, 06:22:39 AM
It may not fly inverted but you could throw a snake into one of Humongouses' cars during the raid on the refinery.
Title: Re: BHM 1/2A auto gyro
Post by: Leroy Heikes on December 18, 2006, 09:12:45 AM
Leroy,

I'll send the kit out tomorrow. I still have your address. Do you still have mine? The kit price is listed  $32.95. Send that I'll cover the shipping.


Frank;
    I'll get the check in the mail for the above amount either today or tomorrow. I have to go and buy more stamps.

Leroy
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on December 18, 2006, 09:30:39 AM
Inverted? I think that it would depend on how long you plan to remain inverted. Anything past a second then depends upon height. However a loop might be OK! We sell replacement rotors to the more daring pilots.
Larry
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 18, 2006, 10:37:04 AM

Roger that Leroy.

Mr. Larry Rice----hi ya there buddy!! Anyone that's ever seen me fly a model airplane will tell you that I'll try tricky things with them, so getting the auto-gyro to do tricks is a certainty with me on the handle.
I've examined the parts in the kit and it looks very nice.
I'm a little surprised that some of the other guys here aren't jumping on this one. Maybe once Leroy and I start building them...........................................
BTW....i will be needing additional rotors. How about sending me 4 sets?
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on December 18, 2006, 01:29:37 PM
You know Farnk, there is a chance that you might not break them. I will get then off tomorrow.
The Auto might do that saber dance thing.....hum?
Larry  j1
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 18, 2006, 01:45:12 PM
Larry,
With spare blades on hand they probably won't break, but  if I didn't have spare parts they'd be certain to break. It's a law. I forget the guys name though.
Title: Re: BHM 1/2A auto gyro
Post by: Bill Little on December 18, 2006, 01:53:39 PM
Larry,
With spare blades on hand they probably won't break, but  if I didn't have spare parts they'd be certain to break. It's a law. I forget the guys name though.

It's one of "Murphy's Laws".   #^ :!
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 18, 2006, 01:57:27 PM
It's one of "Murphy's Laws".   #^ :!


Yeah that butthead   ~~>
Title: Re: BHM 1/2A auto gyro
Post by: Clancy Arnold on December 18, 2006, 01:57:43 PM
Frank
You are referring to Murphy's Law.
He also wrote:
If (N) parts are required, (N-1) are available.
The most expensive part will fail first, unless there is a part that is harder to replace.
Clancy
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 18, 2006, 01:59:02 PM
Frank
You are referring to Murphy's Law.
He also wrote:
If (N) parts are required, (N-1) are available.
The most expensive part will fail first, unless there is a part that is harder to replace.
Clancy

yeah that butthead   ~~>
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on December 19, 2006, 12:04:46 AM
[
I'm a little surprised that some of the other guys here aren't jumping on this one. Maybe once Leroy and I start building them...........................................

Quote

I'm still thinkin', Frank.  Very tempting, you know how I like oddball stuff.  Just not sure where I'd find the time to build it.  I'm not a kit collector like some of you guys are!

Oh, hey, send it on...can I PayPal you?  $32.95, right?  Any S&H?

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 19, 2006, 05:32:48 AM
Quote from: minnesotamodeler link=topic=3096.msg22096#msg22096 date=1

[quote

I'm still thinkin', Frank.  Very tempting, you know how I like oddball stuff.  Just not sure where I'd find the time to build it.  I'm not a kit collector like some of you guys are!

Oh, hey, send it on...can I PayPal you?  $32.95, right?  Any S&H?

--Ray

I don't have pay-pal Ray-but you know my address. I emailed Larry this morning and asked him to get your auto-gyro off to you right away. Thanks for joining up. I'm sure this will be a fun model. I hope you'll join me here with progress reports and building pix.
I'll cover the shipping for the model.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on December 19, 2006, 08:19:11 AM
Yeah, I know where you live...sounds ominous, doesn't it?  OK, a check for $32.95 to you post haste.  Thanks Frank!  Oughtta be an interesting model.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 19, 2006, 01:39:47 PM
I got an email from the Red Baron, he says he'll have your auto-gyro in the mail tomorrow Ray. Let me know when you get it o.k.?
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on December 19, 2006, 04:20:49 PM
Will do.
Title: Re: BHM 1/2A auto gyro
Post by: Mike Spiess on December 20, 2006, 03:45:54 PM
OK Frank I'll bit the Queen Bee has been a blast so this should be fun. j1 Then I suppose I'll be building a Bi- Slob. OOOHHH YOU GUYS
Title: Re: BHM 1/2A auto gyro
Post by: Mike Spiess on December 20, 2006, 03:48:38 PM
$32.95 to you Frank?
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 20, 2006, 04:20:54 PM
$32.95 to you Frank?

Yes Mike to me. Don't worry about shipping I'll pay for it. Send me your address and I'll get your auto-gyro off to you right away.

How's your Bee coming lomg?
Title: Re: BHM 1/2A auto gyro
Post by: Mike Spiess on December 20, 2006, 08:03:15 PM
Pics of the Bee tomorrow. Thanks Frank
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on December 22, 2006, 03:04:00 AM
Here are some information and helpful hints on making a successful autogiro.
When we started this project we knew that Scientific had run into some problems. The three things that plaqued their kit was that the rotor hung up and stoped, the rotor wobbled, and the rotor sometimes left the plane while in flight.
To cure the first problem we re-designed the rotor hub so that you do not need to smash the eyelet on the botom of the hub. Thanks to modern cements we did not need to hold the hub together with the eyelet. The second problem was cured by balancing the rotor blades, We cut them all from the same sheet of wood. The last problem and the most critical was fixed by using a screw to hold the hub to the rotor shaft, instead of a nail.
          When you assemble the hub and blades it is important that you get the blade angle right on all of the blades. I suggest that you make a stick with the correct taper on it and use it to hold each blade at the proper angle until the cement dries and put extra coats of cement over the hub and rotor attachment area.  n~
GOOD LUCK!
Title: Re: BHM 1/2A auto gyro
Post by: Leroy Heikes on December 22, 2006, 10:51:30 AM
Frank;
    I received the kit yesterday.

Leroy
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on December 24, 2006, 03:50:49 PM
OK guys, get this:  I received the kit TODAY, the 24th, that's right, SUNDAY, the postman came to my door with the box.  I guess they're working overtime trying to clear out all the packages sent for Christmas.  I am impressed. 

Oh, the kit looks interesting also. 

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 24, 2006, 04:09:32 PM
That is so strange!!...........I got the extra rotors I ordered today!! SUNDAY!! This hs never ever happened before.

Maybe our mailmen know that these lite little boxes contain model airplanes and don't want us to wait even one extra minute..................
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on December 24, 2006, 04:20:34 PM
Frank, you really ordered extra rotors? Isn't that a little fatalistic?  Or are you determined to attempt inverted flight even though you KNOW what will happen...

This appears to be really just about a half-autogyro; half stationary wing.  I bet it would fly without the rotor at all...but wouldn't look nearly as cool.

Come to think of it, it may have enough wing to fly on inverted, when the rotor stops from the reversed forces!  Then when it starts rotating backward, maybe the extra lift would be enough to turn it back over, then the rotor would stop again, fly on the wing alone, rotor starts spinning the "right" way again...you suppose the rotor could take that kind of stress? 

Hey Frank, you can try it for the rest of us, you've already got the extra rotors!

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 24, 2006, 05:07:04 PM
Yes Ray,
I ordered extra sets of rotors-4- to be exact but who's counting. I plan to fly mine on a local church parking lot I've had my eye on. It stands empty every day but Sunday.

According to Larry this is a Walt Musciano scale model of an actual full size plane people actually sat in and flew. I think I saw an article on it in Mechanics Illustrated when I was a kid. For sure I remember MiMi.

I think it will fly inverted  and for the reasons you stated. At the very least it should provide for some interesting climbs and dives.

I think hollowing the fuse down to a thin shell is going to be a  good place to start. Also I think I'll sand an airfoil shape into the rotors and balance them before I fly it.

Have you started gluing pieces yet Ray?
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on December 24, 2006, 05:25:23 PM
Naw, not yet, I've got so many projects going now I'm not sure which one I'm working on at any given moment...I'm supposed to be working on finalized plans for the LittleAxe but haven't been able to get it done. Just finished some kits, so that's my next priority I guess.  Then I have 2 updated versions of existing designs I need to build prototypes of, just have a wing finished so far.  I have a new Brodak .049 I picked up somewhere that's super stiff, I need to break it in sometime...also a VA I've had for a year now, still not broken in.  Then there's always that big .40-powered biplane that's my permanent winter project, I really oughtta try to make some progress on that...you get the idea.    But never fear, I'll work this thing in somewhere soon.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 24, 2006, 05:45:59 PM
gEE RAY......................I know that feeling!!

Let's see.............I still have my LA HEAT to finish. My Queen Bee to finish. My 1/2A Snapper still needs covering. My Bi-Slob needs a couple patches........Well I guess that's it for partly complete projects.
Title: Re: BHM 1/2A auto gyro
Post by: Leroy Heikes on December 25, 2006, 10:03:24 AM
If I get home early enough tonight I'm going to start mine! That and a 1/2A sopwith camel kit.

Leroy
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 27, 2006, 07:17:55 PM
I got my auto-gyro started tonite.....................

I gouged out a lot of wood from the fuselage. Like 3/4 oz. I'm going to sand the fuselage tomorrow after work and set up the stab and elevator. Maybe the wing too. I have a "known to work good" black widow to stick on it. I'm going to try to have this one done by the weekend and then maybe Monday I can get some video of it going around.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on December 28, 2006, 02:01:28 AM
I think I'm gonna try and put some beam mounts in mine.  I Been looking at it and don't think it'll be a problem. Might add a little weight, just means more balsa to hog out of there. I'll probably leave them "too long" and adjust the balance by moving the engine after it's built. I got a neat little blue Brodak I think I'll stick on there, hafta paint the plane blue to match it.  Then I'll have to make a hatch for tank access...and different gear mount...

By the way, what are you guys doing about the airfoil?  Are we supposed to radius off the top corner for a flat-bottom A/F? Or round off the whole LE for a teardrop?  Surely not just leave that square flat LE as is.  Lemme hear your thoughts.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on December 28, 2006, 07:54:24 AM
If you do not mind my input, if you are using Brobak's .049 with the three screws in the backplate you could cut a thin metal plate to mount under the screws and secure it iver the landing gear or you could put the gear behind the bulkhead and use Brodak's mounts.
The airfoil is meant to be a flat A/F. Simply round the leading edge. Unless you too think that inverted flight is a doable thing. DK^
Larry
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on December 28, 2006, 09:28:07 AM
If you do not mind my input, if you are using Brobak's .049 with the three screws in the backplate you could cut a thin metal plate to mount under the screws and secure it iver the landing gear or you could put the gear behind the bulkhead and use Brodak's mounts.
The airfoil is meant to be a flat A/F. Simply round the leading edge. Unless you too think that inverted flight is a doable thing. DK^
Larry

Can't speak for the other guys, but I don't mind anyone's input! Especially concerning something in which I have absolutely no experience--like, maybe, an autogyro...

The Brodak I have has a round threaded-in backplate just like my VAs and Norvels, no easy way to convert it to radial mount.  I could make (have made) an adapter, a plate that bolts on the radial firewall and carries its own beams, but it adds a little unnecessary weight IMO, at least mine did.  I think building it from the beginning with beam mounts will be the most practical way to go.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on December 28, 2006, 09:55:48 AM
I guess that John sent me a different engine than the one that you have. I, too, use to make some motor mounts for beam engines. For the Gilbert I made one with the beams mounted on a plate as one unit. For the TD I left them seperate and I put them into a race plane kit I was producing. They are easy to make out of .030 Alum. and once bent and bolted to the engine they are very strong. They are lighter than any fuel tank mounted onto any engine. Some builders mount the landing gear behind the bulkhead but this will work loose over time so if you do that use a lot of Epoxy to harden the surounding wood.
Good Luck! I am rooting for you!
Larry
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 28, 2006, 08:55:08 PM
I went with rounding the leading edge on the wing. Got the main section done and then turned my attention to the motor mount. I am bending new landing gear wire to fit in the slot on the back of the engine and plan on using the cowling that came with the kit.
I didn't feel like doing much more in the shop tonite so I plunked down in front of the TV with the dog.
Here is a pic of where I'm at so far.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on December 29, 2006, 07:02:50 AM
Never saw quite that approach to landing gear before.  You are aware, I know, that's the air intake--venturi--you're using for your landing-gear slot; you don't think that'll  restrict too much there?  I see the hole through the firewall, that oughtta help. Still,I think I'd rather slot the firewall to accept the square-bent gear.  But I guess that's why everyone's planes are different.

Still haven't got a start on mine.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 29, 2006, 01:01:49 PM
Thanks Ray----------I'll rethink and doublecheck the landing gear position. The air intke isn't restricted at all except down the sides and I figured that the whole in the firewall would give it sufficient room to breathe. Now I'll probably go back to the kit gear. #^
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on December 29, 2006, 01:16:16 PM
I read an article once about a  modeler who, wanting more speed from his Cox engine, cut a slot to the intake  in the bulkhead. He claimed that it gave him ram air. Cox later made some changes in their plastic planes to bring more air to the intake.
Larry  LL~
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on December 29, 2006, 09:50:56 PM
Finally got a little start on mine...got the holes cut for the beam mounts (1/4" square) through to the interior cavity.  Hogged out a BUNCH of balsa, mostly from the back end.  More will be coming out.  Didn't get pics, I'll try to soon.  (The camera is never on the same level of the house as me when I need it; don't wanna stop work to go climb the stairs and look for it--I'm always thinking, "I'll bring it next time I go up (or down, as the case may be)."  Then of course I forget.  None of you have that problem, I guess?

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 29, 2006, 09:54:34 PM
not me Ray my mind is sharp as one of those ....hmmmm.......one of those........................
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on December 30, 2006, 08:01:09 AM
I have a mind like a steel trap.  Closed...and rusted...
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 30, 2006, 08:22:53 AM
I have a mind like a steel trap.  Closed...and rusted...

Now that's rich..................

Well it's Saturday morning here in the Carlisle house and I have a progress picture to post.....I'll be using the kit landing gear after all. And I'm afraid I'm going to have to cover this one with tissue, so for sure it won't be ready to go by Monday.
On the sunny side though- look how big that wing is. I'm sure this thing will loop with a Golden Bee on it's nose.

Ray do you think yellow would be a good color choice?? BUT....do you think it would fly if it was white and blue?
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 30, 2006, 08:30:01 AM
Of course all this diddling with 1/2A stuff is really putting me behind in the "Build a New Stunter" schedule.
Well I guess I'll have to get a couple more hundred flights out of my Victory from last year ( with no crashin'). And I do have my LA Heat which will definitely be circle ready by May. SOOoooooo.........I'm good to go. y1
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on December 30, 2006, 02:29:10 PM
Now that's rich..................

Well it's Saturday morning here in the Carlisle house and I have a progress picture to post.....I'll be using the kit landing gear after all. And I'm afraid I'm going to have to cover this one with tissue, so for sure it won't be ready to go by Monday.
On the sunny side though- look how big that wing is. I'm sure this thing will loop with a Golden Bee on it's nose.

Ray do you think yellow would be a good color choice?? BUT....do you think it would fly if it was white and blue?

Only if you put some stars on it.  If you have any left.  And maybe some red somewhere. 

--Ray 
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 30, 2006, 02:56:55 PM
Only if you put some stars on it.  If you have any left.  And maybe some red somewhere. 

--Ray 

I just checked the box the stars came in and there's only one little one left and one of its' legs (arm?) is missing. I guess I'm going to have to stick with yellow. Luckily I still have plenty of that!! Let's seee............yellow and blue?....yellow and red?....yellow and black?.......hmmmmm.............................................
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 30, 2006, 05:30:45 PM
Two things...........

First thing--drilling holes. I love drilling holes.
Second thing--take a basic model design even a kid could build and turn it into a difficult, time consuming, tedious project. I love to do that too.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 30, 2006, 06:53:05 PM
Ahhh...............I'm back again!! #^

I stuck the rotor blades on the hub (perfectly straight ::)) and then I couldn't resist pinning the whole shebang together and posting more pix. y1
I like it so far.......................and now I've done enuff modeling for the day. ;D
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on December 30, 2006, 10:42:53 PM
Lookin' real good, Frank.  How light a fuselage did you wind up with?  I've got mine down to about 1/2 oz., hope to get it a little lower yet.  (Admittedly, without the hardwood motor mount beams.)

And, I don't see any holes in that firewall for engine bolts/blind nuts.  Are you going to use wood screws?

Ah, I think I see...the REAL firewall will go on over that?

And what is the clear plastic visible in the 1st pic of the 2nd posting? 

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 30, 2006, 11:53:32 PM
Lookin' real good, Frank.  How light a fuselage did you wind up with?  I've got mine down to about 1/2 oz., hope to get it a little lower yet.  (Admittedly, without the hardwood motor mount beams.)

And, I don't see any holes in that firewall for engine bolts/blind nuts.  Are you going to use wood screws?

Ah, I think I see...the REAL firewall will go on over that?

And what is the clear plastic visible in the 1st pic of the 2nd posting? 

--Ray

You're good Ray.......

Yes I'm going to use wood screws and yes the real firewall goes over that.
The clear plastic is a piece of packing tape to hold the landing gear on for the picture.
With the "real" firewall but no gear wire the fuselage weighs about 3/4 to 7/8 of an ounce. I'm using a cheap cooking scale so probably it weighs different in your shop than mine.
I got to see about 15 different Musciano/Black Hawk models fly last year at the Kalamazoo contest, they really do go. And they are quite sturdy. If I was going to learn a youngster how to build and fly I'd be sure to let him cut his teeth on a few of these models.

I'll be watching for pix of yours. And where are the other guys?
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on December 31, 2006, 08:15:23 AM
I'm ba-aack................................. y1

This morning I set lugs onto the firewall to use as screw anchors to hold the cowling on. #^So far it looks like it will work just fine. <= I like to get these little things done before I actually assemble the model. It's much easier.

I'll glue the firewall to the model next and then set it all aside till next year. LL~

The lines I've been flying my Bi-Slob on are all gnarled up so I'm going to cut a new set and patch up the Slob's wing in preparation for a sortie in Flint tomorrow. n~

Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on December 31, 2006, 10:41:28 PM
Very nice...I'm sanding the front of my fuselage to a round section to match the cowl.  Trying to decide if I want an upright engine or inverted, or sidewinder for that matter...guess it's too late for sidewinder, come to think of it, since I already have the beams cut into the fuselage inboard-and-outboard.

Boy, the plans don't give you much direction on the length/location of the wing braces, do they? 

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on December 31, 2006, 10:55:57 PM
The wing braces should be 4" long.
Larry
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 01, 2007, 06:33:35 AM
Thanks, Larry.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 01, 2007, 07:11:21 AM
Very nice...I'm sanding the front of my fuselage to a round section to match the cowl.  Trying to decide if I want an upright engine or inverted, or sidewinder for that matter...guess it's too late for sidewinder, come to think of it, since I already have the beams cut into the fuselage inboard-and-outboard.

Boy, the plans don't give you much direction on the length/location of the wing braces, do they? 

--Ray
I'd like to see the motor amount arrangement Ray. One thing I'm curious about is the method you used to get the motor mount beams in there. Can you show a picture?
I got all the motor mount holes in the wrong place on my model. I'm going to have to drill out the holes to dowel rod size and plug 'em and start over.
I also have concerns about the rotor assembly. I have a set put together but it looks wrong.

If you are shaping the nose to match the cowl, did you add wood to the sides and bottom of the fuselage?
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on January 01, 2007, 10:46:40 AM
OK Guys! We gave one of our test kits to a 12 year old, he finished it in a little over 3 hours (minus the rotor). Maybe it was because he has built my kits before or maybe he followed directions and just assembled it.  ???
          I worry when you, Frank, said that you assembled the rotor with the blades straight.......I hope that you tilted them as shown on the plan.  :-\
         Ok! I will leave you guys alone to your own devices......Good Luck!
Larry
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 01, 2007, 12:38:26 PM
OK Guys! We gave one of our test kits to a 12 year old, he finished it in a little over 3 hours (minus the rotor). Maybe it was because he has built my kits before or maybe he followed directions and just assembled it.  ???
          I worry when you, Frank, said that you assembled the rotor with the blades straight.......I hope that you tilted them as shown on the plan.  :-\
         Ok! I will leave you guys alone to your own devices......Good Luck!
Larry

Obviously the kid had no clear understanding of the delicate balance between design parameters and aerodynamic function when coupled with real time attributes and performance demands. And he most certainly must have gotten the model for free because a three hour build in no way brings any entertainment returns on a thirty dollar plus investment on the kit.
I demnd to see photographs of the finished product. And video tape of the model in  actual field test operations.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 01, 2007, 04:31:23 PM
Larry I do hope you realize that my last post was typed with tongue planted firmly in cheek. It was meant to be funny.

However....................to the rotor. In the picture below there are two sets of rotors. The one on the left was assembled according to plan. The one on the right was assembled according to my second thoughts.
Please note that on rotor #2 the rotor blades are making contact with the hub which should make for a stronger glue joint. What do you guys think?
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on January 01, 2007, 06:16:36 PM
I know, Frank, I was just kidding too. As to your rotor mod. I think that I will follow Mark Twains advice and keep my moth shut. It is interesting and I do agree that I did not like the blade attachment but.......oh! D--- so much for not saying anything.  HB~>
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 01, 2007, 08:01:19 PM
Larry, about 80% of modeling is in the building for me.
As the marketer of these kits it must be a little irksome to see guys make a big to-do over the design of the model rather than just put it together and fly it.

As to the rotor mod.........i'm not done yet! This is a cool design with lots of potential. If we keep in mind that all of the models in your line up are targeted toward youngsters who are just learning and as such should not be too complicated or challenging then your kits meet all of the requirements to achieve that goal. And they re great.

However if you put that same kit into the hands of someone with tools and modeling experience you will find that they can not help but start questioning the original design and then begin to make changes that they think will enhance the model.

As I've said many times before. Give me anything and after I've done it a half dozen times I'll have something completely different.

I have 4 sets of rotors---given a couple more days I'm sure I can develop a rotor that is totally different and hopefully better than what was originally supplied with the stock kit. Now that is not to say that the kit in stock configuration is inadequate, only that some modelers just can't leave well enough alone and turn what is simple and straight forward into a more complicated project.



Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 01, 2007, 09:16:15 PM
here's a picture...........
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on January 01, 2007, 11:20:45 PM
Frank,
          I agree with all you have said and I have always said that is what modeling is all about. I hope that everyone who builds says either "I can improve on that" or "I can make a better model" and they go on to cutting wood.
Rock on, Frank!
Larry
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 02, 2007, 11:24:44 AM
GOOD  LARRY.

Now to the rotor. I think the one on the right will do just fine with two more slightly larger discs top and bottom to hold the blades firmly. I'll just pop down into the basement and cut them out now. Picture and another post in a few minutes.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 02, 2007, 12:03:38 PM
O.K. I got the two discs cut and put them on the rotor..............I do believe that ya'll will have to agree that this is definitely an improvement that will add stability to the rotor. At least I think so.
You're comments are invited.

Picture one--the two larger discs I cut out. I traced the original disc with a Sharpie medium felt tip pen and then cut the disc on a scroll saw. Not as nice and round as the laser cut disc in the kit.......but hey.

Picture two--the two new discs are now added to the rotor hub assembly.

Picture 3--a side view......you could assemble the hub first and then insert the rotor blades and turn them to touch top and bottom on the discs thereby getting an accurate pitch to all three blades.

Picture 4--the stock kit rotor assembly shown next to my assembly.

Where are you Ray?
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 02, 2007, 02:39:34 PM
I'm here, Frank...had a few little distractions, my son's burst appendix and resulting peritonitis, etc.; putting together a couple more kits; cleaning a place on my workbench for my new belt/disc sander; and mostly my inherent laziness.  But here I am.

You're a little ahead of me.  I do approve of your "improved rotor" hub assembly, I'll probably copy it.  I was going to ask if you were planning to round off the LE/TE of the rotors, or leave them square, but your pics answered that question.  I'm thinking of rounding mine kinda like I did the wing airfoil--you can see it in one of the pics below.

My "hogging out" of the fuselage ended up with a 1/2 oz. weight, I couldn't do any better than that.  With the beams (see pics) and firewall included, it's probably closer to 1 oz.  Oh well.  I think I'll go with a balloon tank which should help the weight a little.

Tail pic shows sewn hinges, my favorite kind. 

OK--on to the pictures:

Oh, notice also I "hogged out" the cockpit a little as well--and decided not to use the little hardwood post pilot, too heavy.  I may carve a little styrofoam guy to glue in there, or just skip it altogether. 

Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 02, 2007, 03:15:49 PM
Very nice work Ray. Those holes through the front of the fuselage for the motor beams show great craftsmanship.

Your son is going to be o.k.? He had an appendectomy?

I still plan on rounding the rotor blades. I just forgot to do it in all of the excitement.

A tutorial with pix about the sewn hinges would be a great help Ray. I'd like to try that.

Here's a caution--right now it looks like if you follow the directions for mounting the rotor to the plane the set up will end up with the rotor hitting the rudder. I'm looking at using a longer dowel rod so I can take advantage of the depth of the hole in the body.

Thanks for the pix and progress report.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 02, 2007, 05:43:26 PM
Son had an appendectomy, yes--then 5 days of I.V.-administered antibiotics to clear up the mess.  Home now, after nearly a week in hospital, doing fine, thanks.

Thanks for the heads-up re: the rotor/rudder interference.  I'll check that out for sure before I glue anything!

The sewn hinges are the simplest thing in the world.  Maybe I'll try to put together a pic-tutorial on the process.  They make the snuggest joint and freest movement you will ever see.  Lotta superlatives there but you get my point. Course you have to steal a needle and thread from your wife, I dunno how that'll go over in your house.  Made a few waves here when she finally saw me using it, about a year later.

I haven't yet quite worked out the gear attachment; I'm gonna use the ply. firewall with the beams running through it for extra reinforcement, so I'll probably "sew" the gear wire to that with copper wire. Then a few of my favorite things--dowels through the ply. into the balsa--oughtta make it pretty well bulletproof. 

More pics as warranted.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 02, 2007, 08:20:54 PM
Good news about your son.............................kids eh?

I don't think there'd be a problem with my using a needle and thread around here. So I'm safe there.

Wiring the gear to the firewall seems to be your best bet. And the bladder tank will save weight. I'm curious to see what weights our different approaches will produce. Right now I'd be willing to bet that both models will come out around the same weight.
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on January 03, 2007, 09:22:11 AM
Frank,
         In your earlier pictures the rotor appears to be well clear of the rudder. The depth of the hole should not be the determining factor in the height of the rotor shaft. Use the length of the "Rotor Pylon Fairing" and Please let me know how that comes out.
Larry  :o
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 03, 2007, 09:55:24 AM
Frank,
         In your earlier pictures the rotor appears to be well clear of the rudder. The depth of the hole should not be the determining factor in the height of the rotor shaft. Use the length of the "Rotor Pylon Fairing" and Please let me know how that comes out.
Larry  :o

I never even tried the "rotor pylon fairing". I got ahead of myself there. Although it seems like a good idea to put the pylon all the wat into the hole.
Right now I'm on my lunch break but after work I'll be back at the auto gyro. Great kit!! I'll be sure to get the fairing and test fit it.
Thanks for the heads up Larry.
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on January 04, 2007, 11:56:56 AM
This is a first run kit and we have found a problem. Someone  :-[ cut the Rotor shafts to short. They were suposed to be 2 1/2" long we are adding another 1/4" to make then 2 3/4". If you have one of the short ones I will replace it, just send me an address.
Larry
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 04, 2007, 03:02:34 PM
Larry,
Me and Ray talked about the shaft and we figured 3" would give us the best glue joint.
The kit is really good. There are always bugs to work out of anything. One small problem (the shaft) ain't too shabby for a first run.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 04, 2007, 03:43:07 PM
I agree, I'm happy with it.  The 3" figure we came up with by adding the fairing length--2 3/8"--to the hole depth--5/8".  Seems to take best advantage of everything.

Here's some pics of my gear mounting: inside side, outside side, mounted on plane (not yet glued, though).

--Ray

P.S. Larry, don't sweat the rotor dowel. I've got a dowel lying around here I'll cut one from, no problem.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 04, 2007, 04:58:15 PM
That's some sweet parts fitting there Ray. Did you file those square holes?
I thought I was making it more complicated but you've outdone me this time!!
Looks like you stripped a length of bell wire to get your copper thread. Right? #^
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 05, 2007, 07:42:18 AM
Wrong on both counts, Frank...I cut the square holes with a square drill bit.  haha no really, I cut them on my jigsaw--drilled a (round) hole, threaded the blade through, reattached it to the saw, cut away everything that didn't look square. 

Copper wire I bought at the local hardware store. It's labelled "sculpting, wrapping, hobbies, crafts" and is 24 ga., 100 foot roll.  That oughtta keep me supplied for awhile.  I forget what it cost but it wasn't much, maybe a couple bucks.

You know I live to complicate things up, no such thing as a simple project.  Gotta have a challenge.

Oh, to answer an earlier question:  I do intend to laminate some soft 1/8" thick balsa on the sides, and maybe bottom, of the fuselage, to blend it into the round cowling.  More complications but I think it'll look better.  And if it looks better it'll fly better, right?

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: Richard Grogan on January 06, 2007, 09:01:51 AM
I agree, I'm happy with it.  The 3" figure we came up with by adding the fairing length--2 3/8"--to the hole depth--5/8".  Seems to take best advantage of everything.

Here's some pics of my gear mounting: inside side, outside side, mounted on plane (not yet glued, though).

--Ray

P.S. Larry, don't sweat the rotor dowel. I've got a dowel lying around here I'll cut one from, no problem.
Looking good Ray!
Title: Re: BHM 1/2A auto gyro
Post by: Mike Spiess on January 07, 2007, 12:10:20 PM
HEY guys I'M back from AZ. Haven't got my kit yet Frank.  mw~
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on January 07, 2007, 12:47:02 PM
Timing! The post office was closed on Tuesday so your order went out Wednesday and should arrive Monday. There is a follow up package of up dated parts and left out parts comming too.
Larry
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 08, 2007, 11:46:13 AM
OK, I got my autogyro mostly together, and it weighs nearly 4 oz. already--that's w/o engine, controls, finish.  Also appears it will be rather noseheavy. I'm thinking about replacing the provided wheels with those ultra-light ones I used on the Queen Bee; that should help both problems a little.  How are you guys doing on weight?  I guess I'll also do some more serious sanding...

Frank, I borrowed your rotor hub idea: Cut the notch deeper in the blades so they contact the hub, sandwiched the hub and spacers with 1/16" ply. discs about 1/8" bigger all around.  I also put 1/32" balsa spacers between the discs and rotors, so they would contact top and bottom when set at the proper angle.  Then I had to replace the eyelet with a longer one to reach through all that. I'll post a pic later. 

Using the 3" long dowel pylon (extending above the fuselage 2 3/8"), my rotors clear the rudder by about 1/2", none too much!  Also I have one rotor blade much lighter than the other two.  I tried balancing them by some judicious sanding of the 2 heavy blades, but wasn't able to get enough off without endangering the structural integrity, so finally embedded a small brad in the tip of the light one.  Pretty much in balance now, I'll fine-tune it if necessary with extra coats of paint on the light rotor.

Decided to go with an inverted mount to keep the vertical CG closer to the leadout guides.  And upon further review, I have concluded that there is NO WAY this little baby will achieve level inverted flight.  I think loops might be an adventure, even...should be fun seeing what we can wring out of the little boogers.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: Mike Spiess on January 08, 2007, 03:26:22 PM
I justgot mine in the mail. Now I'll have to read all the posts to catch up.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 08, 2007, 03:36:42 PM
Ray,
I haven't been working on my auto-gyro for a few days so I can't give you a weight.

I'm concerned about yours being rather nose heavy which means mine will be too. What do you think about moving the wing forward? nd if you're going to be nose heavy why would you want to make the plane lighter by sanding it more? Wouldn't that aggravate the nose heavy condition?

Welcome aboard Mike. Sorry about the holiday mail delaying the delivery of your model.
We've come across some interesting things with this plane. Ray and I have both done different things with ours as far as mounting the engine and landing gear. I'll be watching to see what you do with yours. Have fun and keep us posted.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 08, 2007, 04:20:11 PM
Yeah, well, I guess that makes sense all right, taking more weight off behind the CG won't help, will it?  I'm not sure why mine is noseheavy, I set the engine back as far as it would go (see pics).  I used standard LG, don't think my copper wire added that much weight; oh, the MM beams are extra weight up front so that may be part of it.  And of course all the balsa I removed from the fuselage interior, mostly behind the wing.  Course I'm guessing at this point, I don't have the pushrod or elev. horn on, nor any finishing mat'ls. Those things will pull it back a little. On the other hand, neither do I have the engine cowl on yet... Plans say 1/2" behind LE; mine right now balances ON the LE.  Well, the lighter wheels will help.

Pics: I tried to get a good shot of the rotor hub, but could not.  Limitations of the camera, or else the operator.  Anyhow, here they are:

Edit: I know the pylon fairing is supposed to go in front; it will.  Pylon dowel isn't yet glued in.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 08, 2007, 05:07:02 PM
very nice Ray............I could see the rotor hub detail very well.
What's the plan on finishing?
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 09, 2007, 06:59:48 AM
I have no plan; I did pick up some blue Rustoleum just in case that mood strikes me.  How 'bout you?
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on January 09, 2007, 10:03:59 AM
On my web site you will find a link to a real auotgiro at the Henry Ford musuem (just above the pictures of the kit). That may give you some insperation on color or finish. Also note the flat sides.
Larry
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on January 13, 2007, 08:09:16 AM
Did you guys work out the balance of the model? As I see it there only 3 things that you can do; 1- put the weight back into the tail, 2- lighten the nose of the model, or three move the wing forward.
Ray,
        You have a heavy engine, with way to much power for the model, and a heavy motor mount. If you still want to use that engine you can start by moving the tank back over the balance point, add the pilot and a little weight in the tail. another way is to remove the langing gear and move it back to the leading edge of the wing and if you need to you can then move the engine still futher aft.
Larry
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 13, 2007, 09:03:12 AM
I appreciate the suggestions, Larry.  As it happens, the Brodak engine weighs around 2 oz., about the same as my Norvels, about 1/4 oz. more than my VAs and actually a little lighter than my Cox BWs.  Compared with the tank-mount Coxes, the tankless engines place their mass further aft, which I hoped would compensate for the heavier motor mount.  now that  I have the thing completely together, and with the lighter wheels, the balance isn't so far off--maybe 1/4" behind the LE, with finishing yet to go.  I think it'll be OK. 

Too much power?  No such thing, is there??...

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on January 13, 2007, 11:08:21 AM
Thank goodness that you got the balance in OK! I had not head from anyone for a while and I wondering if the models had been thrown away.  As to the heavy engine comment I meant no harm but note that the plans (as per Walt Musciano) show a OK .049B engine, low power and low weight. For general use a tankless Cox Babe Bee, Wen Mac, Testers, Atwood or other similar engine is adequate.
If the blades stay on then it is not to much power.
Good Luck
Larry  (PE**)
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 13, 2007, 02:44:03 PM
Hey guys!! My Black Widow is too long to fit in the cowling. That brought me to a halt for  while. Now my plan is to use a production Cox engine and figure a way to get a fuel tank into the fuselage. I think a balloon bladder would work but I haven't had much luck with them. Any suggestions Ray.

PLEASE NOTE!!----1,000th post!
Title: Re: BHM 1/2A auto gyro
Post by: bob branch on January 13, 2007, 07:16:05 PM
Frank

I have a Wren .049 sitting here for you if that helps any engine wise. Also a profile .049 powered P-40 with a builtup wing that I was planning on giving to you. It has a baby bee on it which is shorter than the black widow.

bob branch
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 13, 2007, 08:10:01 PM
I'll take 'em Bob. And if there is anything you would like in return it is yours ( be reasonable!!). y1
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 14, 2007, 06:37:55 AM
Man, what a blank check...Frank, you never made that offer to me!!

If you do use the production Cox, a balloon tank is the way to go.  Non-pressure, I refer to 'em as "floppy tanks" to emphasize that, a standard round party balloon will hold about 1/2 oz., plenty for that little engine.  Only "trick" is to be sure you draw out all the air before you fuel--don't want any bubbles in there.  I inserted a plastic container above the wing that I thread the balloon into from underneath, still working on a removable hatch to close up the access.  I got my cowl all trimmed out for my engine and installed and it really looks cool.  I'll get some pics on, maybe this PM.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 14, 2007, 08:47:59 AM
Ray----that blank check still needs to be signed, so I still have leeway. I would hope that letting Bob bask in my glow would be return enough. VD~

Now the pictures of the balloon are totally excellent!! I get the picture. y1

Just one question here Ray. Need I be concerned as to the relationship of the "floppy tank" in regards to it's being level with the needle valve?
Title: Re: BHM 1/2A auto gyro
Post by: bob branch on January 14, 2007, 09:41:16 AM
Please pass the sun screen...

                .... I'mj burning in the basking.

bob
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 14, 2007, 09:49:12 AM
Please pass the sun screen...

                .... I'mj burning in the basking.

bob

You sure found that one quick Bob. y1

I'm surprised that you have any 1/2A stuff at all. I remember that once in the last century I saw you at Rouge with a SkyRay. Whatever happened to that?
Title: Re: BHM 1/2A auto gyro
Post by: bob branch on January 14, 2007, 10:12:06 AM
Frank

That was my son's. He flew it some then lost interest. He also did a scratch build .15 plane. They were all given away before the great move 5 years ago. Along with all my other stunters, including a Saggita, a stilleto, My highly bashed and wonderful flying Tutor... with the 8 inch longer span and 22 in wide tail and the Big Art os .35's and most regretable of all, my Veco needle nose spinners. Yes, I know. Last summer I spoke with kid I gave them all to who really wanted to get into flying. He was visiting friends here on the Island. He couldn't remember what he did with them before going to college. His mom says they no longer have them but can't remember what they did with them.

Here are pics of the plane, a 21 in Scientific builtup wing P-40 with a Baby Bee 0.49 and I think a Wren 049 but not sure of that one. I emailed a more detailed pic of the motors to you.

bob
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 14, 2007, 12:09:25 PM
Ray----that blank check still needs to be signed, so I still have leeway. I would hope that letting Bob bask in my glow would be return enough. VD~

Now the pictures of the balloon are totally excellent!! I get the picture. y1

Just one question here Ray. Need I be concerned as to the relationship of the "floppy tank" in regards to it's being level with the needle valve?

No doubt it makes a difference, but maybe the 1/2As aren't as sensitive to it as the bigger engines...or maybe my skill level is low enough I don't notice such problems.  I just set the container on about the same level as the engine and have at it...it seems to work.  We're not looking for a 4/2/4 break, you know, just a reasonably consistent flat-out run.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 14, 2007, 01:31:42 PM
No doubt it makes a difference, but maybe the 1/2As aren't as sensitive to it as the bigger engines...or maybe my skill level is low enough I don't notice such problems.  I just set the container on about the same level as the engine and have at it...it seems to work.  We're not looking for a 4/2/4 break, you know, just a reasonably consistent flat-out run.

--Ray

Plus.....We already know we won't be flying these inverted.
I decided to make a tin fuel tank for mine. I'll have pictures of it later. Nice thing about it is I can make it square and just wedge it in and epoxy it and forget about it. I'll be able to set the tank in there so as to get a decent cg. The Cox production engine is a good fit for the cowl. Thanks Ray.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 14, 2007, 01:37:37 PM
Frank

That was my son's. He flew it some then lost interest. He also did a scratch build .15 plane. They were all given away before the great move 5 years ago. Along with all my other stunters, including a Saggita, a stilleto, My highly bashed and wonderful flying Tutor... with the 8 inch longer span and 22 in wide tail and the Big Art os .35's and most regretable of all, my Veco needle nose spinners. Yes, I know. Last summer I spoke with kid I gave them all to who really wanted to get into flying. He was visiting friends here on the Island. He couldn't remember what he did with them before going to college. His mom says they no longer have them but can't remember what they did with them.

Here are pics of the plane, a 21 in Scientific builtup wing P-40 with a Baby Bee 0.49 and I think a Wren 049 but not sure of that one. I emailed a more detailed pic of the motors to you.

bob

I did the same thing you did Bob. When I dropped out in '86 or '87 I sold my stunters to the bar at City Airport and gave the rest of the stuff away. I went back years later to see if the planes were still there. They were in a backroom with holes punched through the covering. There was a moment of pain there seeing that.
Yes....the pix you sent were great!! I hope you know that I will put the plane and engine to good use. Also you're welcome to handle time whenever you wish. y1
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 14, 2007, 03:14:27 PM
Ok here's some pics of my cowl(ing), I'm pretty happy with it.  the diagonal slot from the NV is necessary to a rotation to get the thing on.  Frank, I borrowed your attachment idea, a small basswood block glued to the firewall with a blind nut in it. (x3).  Very solid.  Surprisingly, getting the fuel line on through that hole is no problem at all. 

Note also the "cheeks" that round out the fuselage to the cowl line.  I'm pretty happy with that too. 

Now I gotta think of a finish scheme.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 14, 2007, 05:01:37 PM
That's very nice Ray........the cowl cut outs are very well done. I may have to add cheeks on the sides of mine too because it looks really good.
Not yellow?
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 14, 2007, 06:52:22 PM
Well, not yet...there's still time.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: bob branch on January 14, 2007, 06:56:35 PM
Ya know Frank, you could make a cyclic controlled by down elevator input that would reverse the pitch of the rotor blade and it would fly inverted....
    ...
             ...
                     I just do it to get Frank's mind working. Keeps him young!

bob
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 15, 2007, 09:00:57 AM
Hehe...yeah, work that out, Frank. 

I put the wing struts on my autogyro.  Drilled holes through the wing to anchor one end, cut a notch in the fuse for the other.  I had to kinda arbitrarily pick the spots but I think it looks pretty legitimate.  I'll post pics later after everything dries (also finally glued the rotor post in). 

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: Richard Grogan on January 15, 2007, 09:40:40 AM
Now I gotta think of a finish scheme.

--Ray

How about yellow on yellow? Maybe some yellow trim(yellow checkerboard or yellow stripes) and yellow tipped rotor blades??
  ~>HB~> LL~
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 15, 2007, 11:13:08 AM
You forgot the yellow polka dots, and the "yellow dog" insignia.

Just for that, I'm makin' it black!

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 15, 2007, 11:31:10 AM
Raay----I need a quick reply here..........

Can you tell me about how long a run I can get from  half oz. of fuel with the Cox production engine?
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 15, 2007, 11:43:27 AM
Raay----I need a quick reply here..........

Can you tell me about how long a run I can get from  half oz. of fuel with the Cox production engine?

Maybe 3 minutes, depending on prop, needle setting, etc.  You might stretch it to 4, but certainly no more.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 15, 2007, 12:04:29 PM
Maybe 3 minutes, depending on prop, needle setting, etc.  You might stretch it to 4, but certainly no more.

--Ray

Well.....I think 3 mins. is plenty of time for this model so I'll go with the 1/2 oz. fuel tank. What do you think about a 3 minute run Ray?

Making the fuel tank took 3 tries so far. I tried to get it set up like the Cox PT-19  figuring that would give me a good run. The fuel tank in the pix satisfies those requirements. I did finally gouge through the fuselage making enough room for the tank but I glued a lil' piece of balsa in the hole and now you can't see where I gouged through.
I wanted to leave space between the back of the firewall and the tank so the engine could get plenty of air to breathe and also so the motor mount screws couldn't puncture the tank. Also I wanted to keep plenty of balsa where the rotor post comes through for adequate glue surface and structural strength. So I'm thinking the location I have the tank in is optimal.
Do you think we're driving Larry nuts with all of this to-do over a model that 12 year old kid put together in 3 hours? AND........we're getting more mileage out of this thread than a thread about a hi-zoot full bodied stunter.
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on January 15, 2007, 12:22:40 PM
Larry has given up and went on vacation. I will see you guys in about a week, I am sure that you will have test flown it by then.  LL~
Larry
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 15, 2007, 12:36:05 PM
Larry has given up and went on vacation. I will see you guys in about a week, I am sure that you will have test flown it by then.  LL~
Larry

I kinda figured you were keeping an eye on us Larry. Can you imagine how tough your life would be if we were your design team?
 LL~ Oh..........and let's not forget the Mike Spiess and Leroy Hiekes are out there somewhere with the same model. At some point they're going to chime in.........and if Ray and I have missed something you can pretty much count on those guys to find it!! Plus I'm sure they will each somehow manage to complicate this model even more. y1
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 15, 2007, 01:07:22 PM
Build a model straight as is, right out of the box?  Where's the fun in that?

Tank looks good, Frank...will it sit higher than the engine?  May have a gravity-feed flooding potential if so. At worst, I guess it could just be held nose high during fueling/starting.  Where will the fuel line exit, top? side? bottom? Just curious.

As far as I'm concerned, a 3-minute run is just fine for sport flying.  With a fast plane, I sometimes find even that a little long!  I guess a serious stunter would need a 6- or 7-minute run, huh?  Which is why I have a 1.5 + oz. tank in the LIttleAxe. 

I'm sure Larry had no idea what he was getting into when he sold us these kits!  And about that 12-year-old and the 3-hour construction...with all due respect, I think he's pulling our respective legs. 

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 15, 2007, 02:06:34 PM
Build a model straight as is, right out of the box?  Where's the fun in that?

Tank looks good, Frank...will it sit higher than the engine?  May have a gravity-feed flooding potential if so. At worst, I guess it could just be held nose high during fueling/starting.  Where will the fuel line exit, top? side? bottom? Just curious.

As far as I'm concerned, a 3-minute run is just fine for sport flying.  With a fast plane, I sometimes find even that a little long!  I guess a serious stunter would need a 6- or 7-minute run, huh?  Which is why I have a 1.5 + oz. tank in the LIttleAxe. 

I'm sure Larry had no idea what he was getting into when he sold us these kits!  And about that 12-year-old and the 3-hour construction...with all due respect, I think he's pulling our respective legs. 

--Ray

Yeah!!-------whoever heard of building according to plan? That is exactly why I avoid teaching other guys how to do things. They always vary course, and that's frustrating.

The tank pick up tube is a little lower than the screen on the back of the engine, hopefully (probably) it won't syphon.

The fill tube will stick out of the top and the pick up and overflow tubes will stick out of the bottom.

I'm relieved that you figure 3 mins. is plenty of run time for sport flying and I agree. A stunt run needs about 5 1/2 mins. plus an extra minute for getting to the handle etc. So your 1 1/2 oz. fuel capacity in the LittleAxe seems about right.

Larry will probably block e-mail from me. And you. Probably we'll be lucky if he ever sells us another kit.
Title: Re: BHM 1/2A auto gyro
Post by: bob branch on January 15, 2007, 02:44:44 PM
Frank

That tank is so small I couldn't see it with magnifying glasses  n~

Its about as bad as indoor electric stuff! I'll stick to the bigger stuff I can see.

bob
Title: Re: BHM 1/2A auto gyro
Post by: Richard Grogan on January 15, 2007, 02:49:50 PM
You forgot the yellow polka dots, and the "yellow dog" insignia.

Just for that, I'm makin' it black!

--Ray
Mebe some of that"pink" I used on the QBee..Cool Tank Frank! 3 minutes may screw you right into the ground though!! Naww, it'll be just right...I like this here project, I probably could of made it even more complicated with a Fox 15 on the nose... mw~ LL~
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 15, 2007, 03:11:59 PM
Hey, go for it if you're man enough...
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 15, 2007, 04:21:22 PM
Frank

That tank is so small I couldn't see it with magnifying glasses  n~

Its about as bad as indoor electric stuff! I'll stick to the bigger stuff I can see.

bob

Bob, I took your comment on the tank to heart and made a bigger one.

Actually in all of the excitement I plumbed that tank  so that the pick up tube was on the inside back corner, which of course we all know will not work. So I got out a Perfect brand fuel tank and took it apart and plumbed it for the auto-gyro. Naturally it didn't fit so I hogged out more balsa and got it in there. Finally the fuel tank and engine dilemma is solved and I can move on. Now to see what else I can complicate and do over a time or two. HB~>
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 15, 2007, 04:26:11 PM
Mebe some of that"pink" I used on the QBee..Cool Tank Frank! 3 minutes may screw you right into the ground though!! Naww, it'll be just right...I like this here project, I probably could of made it even more complicated with a Fox 15 on the nose... mw~ LL~

Thanks Richard---too bad I soldeded it up backwards.--------Are you building one of these?
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 15, 2007, 06:22:28 PM
Man, Frank, that tank doesn't look much better than that piece of cr*p you pawned off on me. (hehe)

what's the capacity?

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 15, 2007, 07:51:19 PM
Man, Frank, that tank doesn't look much better than that piece of cr*p you pawned off on me. (hehe)

what's the capacity?

--Ray

That's why the tank goes inside the plane Ray. LL~
The capacity is a half ounce. So it's all the same.
It looks like I'll have the rest of the week off and I'm in building mode.
I'm thinking blue and white. y1

I got the cowl fit on. Still need to even things out but that can wait till tomorrow.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 16, 2007, 01:41:06 AM
Lookin' good, lookin' good.  Where'd you get the neato spinner?

Notice your thrust line is a little higher than mine.  Wonder if that'll make any difference, and which one's better?  Mine certainly makes the glow plug more vulnerable to those landings about 2" BGL (Below Ground Level).  I'm getting pretty good at knocking off the glowplug post, I've got I think 4 Nelson plugs now with my "extended post" mod.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: Leroy Heikes on January 16, 2007, 06:00:27 AM
I'm still here, Reading all of the good information you have written. I'm currently in the middle of a Enterprise Camel which I have modified so a Brodak 0.49 is inside the cowl with a approx 1/2 oz tank installed under the Cockpit decking which necessitated the relocation of the bellcrank. As soon as I get that camera I'll post pictures of it in its own thread. The auto gyro is sitting on the bench. I have a Cox production engine actually enough to build two B36s, and another Brodak 0.049 and one Norvel 0.049, SO I have to decide which one to put in the Auto Gyro.

Leroy
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 16, 2007, 06:25:29 AM
Hi Leroy, I got that check the other day,thanks.
I hope you do get a camera. You'll be impressed with how much money you save on film and developing.

Ray, that extended posst on the glow plug looks like it's begging to get knocked off. y1

It is snowing here in Detroit maybe a half inch so far. It's been a month since I went flying. I miss it.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 16, 2007, 08:05:38 AM
Pore Frank...a whole month??  There's about 3-4" of snow on the ground here...worse, the temp is below zero with windchill approaching 25 below.  And even at that, we're not so bad off as my old home state, OK...one giant icecube..  Apparently the whole state is pretty much shut down.

All the struts are on; only thing left on my autogyro is the windshield, and that little tank hatch I have yet to come up with.  Then finishing of course.

--Ray

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 16, 2007, 09:32:35 AM
It's been even longer since I've flown my stunter Ray. Every time I walk by it I think about the fuel residue in the fuel tank congealing. Oh well.
I don't feel so bad about the weather now that I know it's even colder and the snow is deeper at your house. LL~

I think what I'm going to do is a dope finish on my auto-gyro. But rather than assemble it and then finish it, I think I'll get all the parts fit and then put a finish on them and then do the final assembly. I think I'm going to go ahead and do scallops on the wing and fuselage. Probably in white with the scallops being blue. Then some red trim. Rotor blades black with yellow stripes on the tips. A pilot of course. My AMA number on the wing. Maybe AIRCARLISLE on the sides. Possibly some lettraset lettering. Ahhhhh...........the possibilities are endless aren't they?
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 16, 2007, 04:00:54 PM
Whaaaat, no stars?
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 16, 2007, 05:24:17 PM
Here's pics as promised.  On the wing struts, I drilled angled holes in the wings for the lower end ands cut a double-wide notch in the fuselage for the upper ends. On the pylon struts, a similar approach: Shallow holes drilled in the fuse (1/8" to 3/16" deep), with the upper ends cut at the proper angle to meet the pylon.  I hadda sorta guess at locations, but it looks pretty right, I think.  I'll give you dimensions if you want, or maybe you can improve on what I did.

 Next: Canopy (windshield)!

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 16, 2007, 07:36:39 PM
That looks really good Ray!!.............Seeing yours all assembled struts and all gives me the idea that this was a unique and way cool build. The model is definitely different and very pleasing to look at. It looks like it's going to be a finishing nightmare with all that stuff in the way though.

You sure post little pictures--------are you using a matchbox camera?
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 16, 2007, 07:40:19 PM
Whaaaat, no stars?

Yes, no stars. In the beginning I just wanted to do one plane with stars. I wound up with a collection.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 17, 2007, 07:24:19 AM

You sure post little pictures--------are you using a matchbox camera?
[/quote]

Well, you do realize don't you that if you click on the pictures they get bigger?  But yes, the camera I'm using is an early Olympus digital "D-220L" that I got from my daughter when the case cracked and she bought a new one.  It came with a 2 mb card which I found impossible to replace; the biggest the camera will handle is 8 mb, nearly ias difficult to find but I managed to pick one up.  The cracked case is held together with rubber bands, if I had another camera I'd post you a picture!  It also eats AA batteries, has no zoom or video, doesn't make me breakfast in the morning or play my favorite tunes.  Just takes barely-acceptable digital stills.  Someday when my daughter upgrades, I'll get her current one and take a quantum leap in quality.  Till then, just squint Frank, or break down and go find your glasses!

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 17, 2007, 08:02:46 AM
You sure post little pictures--------are you using a matchbox camera?


Well, you do realize don't you that if you click on the pictures they get bigger?  But yes, the camera I'm using is an early Olympus digital "D-220L" that I got from my daughter when the case cracked and she bought a new one.  It came with a 2 mb card which I found impossible to replace; the biggest the camera will handle is 8 mb, nearly ias difficult to find but I managed to pick one up.  The cracked case is held together with rubber bands, if I had another camera I'd post you a picture!  It also eats AA batteries, has no zoom or video, doesn't make me breakfast in the morning or play my favorite tunes.  Just takes barely-acceptable digital stills.  Someday when my daughter upgrades, I'll get her current one and take a quantum leap in quality.  Till then, just squint Frank, or break down and go find your glasses!

--Ray

Oh yes Ray I do click on the pix and yours are still t-niney........You are probably using your computer program to crop and reduce them right? Maybe a lighter touch on the reduction would give a larger view. I really wanted to get a close look at how you attached the struts so I could copy it.
All is well...........I'd rather get a look at any size picture of your models than none at all.
I added two extra spoons of coffee to the pot this morning and am heading to the basement to try and keep up with you.
Title: Re: BHM 1/2A auto gyro
Post by: Richard Grogan on January 17, 2007, 09:16:07 AM
Yes, no stars. In the beginning I just wanted to do one plane with stars. I wound up with a collection.
Frank,
I really like that "Victory". Thats a stunning color scheme! More info please...
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 17, 2007, 09:43:49 AM
Frank,
I really like that "Victory". Thats a stunning color scheme! More info please...

I'm pleased you like it Richard. Last season it got 17 to 19 points at the contests and finally got me some respect in expert stunt.

56 inch span--50 inches long--ST .51 for power--Brodak Dope--171 stars each cut out individually. 56 oz.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 17, 2007, 01:53:20 PM
Concerning the pics, Frank, fact is, I just point and shoot, load 'em into the computer with Picaso software, sometimes crop 'em a little, and upload to the web.  No compressing, or reducing...that's just the way the camera takes them.  I guess not enough pixels, or pixies, or whatever...I'm really up on all this stuff.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: bob branch on January 17, 2007, 03:26:19 PM
Ok Frank. You put it out there, and now curious minds want to know: Where'd you put the one extra star that made it 171? Something ain't symmetrical someplace.

 n~bob
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 17, 2007, 03:56:15 PM
Here's some closeups of the strut installation...I cut the wing struts 3 3/4" long (can get 3 out of 1 stick provided) and the pylon struts, well, I forgot already, 3" or so--depends where you place the lower end.  The 3rd pic shows the underside of the wing where the holes (and 1 strut) come through.  Yes, I will trim/sand that down flush.

Thought I'd also throw in a couple pictures of my LO guide eyelets--I angled the holes in the tip and put them in line with the leadouts, MOL.  No binding this way.  I wish now I'd moved them a little closer together, keeping the centerline between them the same.  That front leadout is ON the suggested CG--1/2" behind the LE.  In fact, the more I look at it the less I like it as is.  I may dig out the front one anyhow, and move it back 1/2" or so.  What do you think (anyone)?

--Ray

P.S. also check out my cute little windscreen!  It's not glued in yet, I'll pull it out for finishing, then glue it in.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 17, 2007, 05:00:11 PM
Now your pictures are bigger Ray.........and very informative.
The windscreen is cool. I'm surprised you didn't get a colored one like you did on the Snapper.
To check the leadout position -- hang the model on the leadout lines and check to see the angle the plane hangs at. I always like it yawed out just a tad. Let me know how that works out so I can position mine from your picture.

I did the rotor struts a little different because at the time your pictures weren't there for me to copy cat from. I drilled angled holes into the fuselage for the bases. Then I used a rat tail file to put grooves in the top on the pylon to glue the sruts into. It looks like yours give more glue joint area. I'm hoping mine holds like a jigsaw piece would. I used two hour epoxy. I think they'll hold. Don't you?

Also it looks like the only way to get good fits is to assemble the thing first. So that is what I'll do. What do you think about using a piece of ply on the underside of the wing for a leadout guide?

I airfoiled the rotor today.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 17, 2007, 05:03:02 PM
Ok Frank. You put it out there, and now curious minds want to know: Where'd you put the one extra star that made it 171? Something ain't symmetrical someplace.

 n~bob

Doh!...........I guess I got the count goofed up. Maybe at a contest this year you could give me an accurate count. #^
Title: Re: BHM 1/2A auto gyro
Post by: bob branch on January 17, 2007, 05:12:31 PM
You know me Frank, I don't do stars.

bob
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 17, 2007, 07:20:14 PM
You know me Frank, I don't do stars.

bob

Just nobodies right?
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 17, 2007, 08:18:06 PM
Actually, 171 divides evenly into 3 groups of 57.  Or 9 groups of 19.  or 171 groups of 1...

Frank, I think your pylon struts look good.  That bamboo end-grain sure looks odd, with its open cells, doesn't it? Interesting tile pattern, too, around that filler tube.

As to my camera shooting bigger pictures, I guess it took umbrage at your remarks...really, I don't know why they come out different sometimes. 

Lessee, plywood under the wing for LO guides?  I guess you mean under the raised tip..that's a very good idea, you could put several holes to make the leadout sweep adjustable.  Wish I'd thought of that, now I have to butcher my wing to get that front guide out.

Maybe I'll try the Rit dye thing on my windscreen. What color, do you think? (No, this time yellow won't do...)

--Ray

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 17, 2007, 11:38:19 PM
There are 11 fields of stars plus 1 star on each wheel pant. Thanks Ray, Bob had me stumped.

The bamboo does look strange on the ends doesn't it? I had some strands (strings) peeling on mine so I handled them carefully till I get some dope on them. That tile pattern is neat huh? I had some extra holes plus I wanted the fill tube to be a great fit. I cut the patches oversize then cut the hole to match. It's a wall patching method I use.

Your camera has a mind of it's own. I checked your pix in other threds and there is a broad range of sizes.

Right!! ply on the underside of the raised tip. Actually I think it's possible to make it a slider. I'll give it a try tomorrow.

The windshield color should probably be dark grey on your model Ray, it will contrast nicely with the yellow.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 18, 2007, 01:23:03 PM
I got the model mostly put together. I still have wing struts to fit and the leadout guides to work out.
Larry has some pictures of a full size Kellett auto-gyro on his website. It's a pretty colorful plane. I think I'm going to do this one in red and white and pretty much copy the full sized one's paint scheme. It looks pretty cool to me.

Mine seems to want to come out nose heavy also. Right now it wieghs 5 1/4 oz. so I'm figuring nearly 7 oz. RTF.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 18, 2007, 02:54:27 PM
Amazingly, I just weighed mine again, and it weighed--5 1/4 oz!  Well, really a little closer to 5 1/2, I guess.  But that's with the controls and wingstruts, so I guess it's gotcha beat a tad in weight. So far anyhow. But I bet if you take off those heavyweight wheels and put some light ones on you'll notice the difference...balance will be improved too. 

All in all, the models sound very equal.  If you do yours in red and white, maybe I'll do mine in white and red. 

I notice you have wrapped your blade connections with something to reinforce them.  What did you use there?  Maybe I'll borrow another trick from you, I hadn't even thought of reinforcement there.  At the very least it looks a lot neater than just the raw joint a la mine.

Your cowl looks good; it's very well done. 

You gonna use the landing-gear fairing included with the kit? So far I've been thinking I won't. Offhand I don't see a good attachment method that'll keep it from swiveling freely around the wire.

--Ray

Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 18, 2007, 03:44:26 PM
I'll be interested in seeing what Mike and Leroy's planes weigh. Likely they'll be pretty much the same.

Did you look at the pix on Larry's web site Ray? The red and white looks very cool. I think I'll put lettering on the fuselage sides. Something like - AIR CARLISLE- maybe.

I used some Dacron string that comes on spools for 1/2 A flight lines to wrap the rotor. I hadn't considered the re-inforcing aspect so much as I thought it would look cool.

I didn't have any choice but to take the time to do the cowl good. You set the bar pretty high on that one.

I didn't get any landing gear fairings in my kit, but yes I think I will put some on. I wish you would have brought that up before I glued the gear to the plane.

After I see how this one flies I might build another one. Next time I'll maybe put the firewall back further. You know the nose hevy condition might be a good thing. The rotor just might make the model fly nose up.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 18, 2007, 06:18:39 PM
Yes, till one of us actually flies one it probably would be wise not to monkey with the balance too much. 

You didn't get LG fairings?  maybe you just didn't recognize them...2 pieces of 1/8" x maybe 1/2" x about 3" balsa.  Supposed to glue on the back of the LG wire.  I wouldn't have known what they were  except the plan sheet mentions them.  At first I thought they were the wing struts!

Dacron string...I thought that was fabric of some kind, or fiberglas or something.  Fantasticly neat job; I don't think I could duplicate it so won't try.  It does look extremely cool.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 18, 2007, 07:18:53 PM
Ray I just read your latest post. Thanks for the pat on the back.

I found issues with the leadout location. I took pix to demonstrate.
The position of the leadout holes fore and aft is just fine but the height of the leadouts as per the kit will make the plane fly with the outboard wing way down.

Here are the changes I made--Mind you that I am not to be considered to have the last word on this or to be right for that matter.
Pictures tell the story so here they are. The first two are using the kit leadout position. The rest are the changes I made.
Note that my modification has the wing perpindicular. Also in one of the pix of the mods you can see the new hieght of where the string leaves the ledout.

Let me know what you think about this please.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 18, 2007, 08:57:30 PM
I just got done figuring how I was going to mount the bellcrank to get it up as high as the lead out guide. I used wooden coffee stirrers for the struts and the pictures tell the rest of the story. There is a slot in the fuselabe for the wing strut and tomorrow I'll refine the set up and put slots in the wing for the other end of the strut. That ought to do it.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 19, 2007, 01:52:30 AM
Now that's a pretty slick solution, on several counts...I hadn't really thought much about the vertical CG. I did hang it by the leadouts to check the nose-down attitude, but didn't check the wing alignment.  Mine may not be as extreme as yours since my engine sits lower on the airplane--compare our pix and you can see the difference in the thrust lines. Also my wingtip dihedral may be a little more extreme than yours which would place my LOs a little higher.  But I'm gonna check it closely in the AM, and if needed I will certainly adopt your solution on the LO guides.  You could even move it  closer to the tip and make it a little shorter too.

The struts, and BC mount, are the coolest thing.  Not sure it was necessary since the LO guide location is the significant thing, as has been abundantly proved in this forum and SSW, the BC location is really sorta immaterial.  Well, except for binding problems if the alignment is too far off ideal, which your setup neatly avoids. I believe I would subject it to a pull test of some kind, though, when you're all done, jjust to be sure the popsicle sticks are up to it.  You also may be able to put your elev. horn on the top, which puts your up line to the front, which everyone knows is a must in these serious hi-performance stunter-type models!

I still suggest you ditch those heavy wheels for some lightweights.  Weigh them--I think you'll be surprised.

Very nice, and the struts are more legitimate-looking to boot.

Race ya to the finish line?

--Ray 
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 19, 2007, 01:42:48 PM
I'll be interested in knowing how the vertical cg works out on your model Ray.

I raised the bc for exactly the reason you mentioned..and that was to keep the leadouts from sawing on the leadout guides. I was feeling pretty clever as I was setting that up.
In your post you expressed concern about the popsicle stick wing struts holding up, so I took that into consideration and added a 1/16 ply plate to the area where the bc mounts. I used balsa on the other set of struts. It really stiffened it all up very well. And then to hedge the bet I cut slots in the fuselage and wing to get a good grip on the struts. I think it's going to work out real good. Of course only flying will tell. It's 30 degrees here and the wind is clipping around 20 mph. so no rush to get in the test flights.

I'm going to look for another set of cooler wheels. I think the weight might help out here to counterbalance the weight of the motor and rotor. Once again it's all in the flying.

Race to the finish? Man, I'm using dope so I think unless you dope yours you'll have the advantage. I will try to have it finished by the beginning of the week though.

Ah....one more thing..I put landing geaar fairings on mine. I think they are going to stay put. I have of course digitally documented everything. I think the pix are self explanatory and ( modestly speaking) will show me to be fairly clever. #^

The first two are the lg fairings--next three the wing struts.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 19, 2007, 02:28:22 PM
Huh...that thing's really shaping up.  BC mount looks non-worrisome now.  You just gotta plug that hole in the wing beneath it though, or use it for something...LG fairings look great--are they sewn on, or is the thread just wrapped around the wire to give it "tooth"?  I may have to re-think my thinks on not using the fairings on mine.

I did check my model for vertical CG and you are right, it would fly outboard-down as is.  That's really good news since it gives me another reason to change the LO guides I wasn't too happy with in the first place.  Mine appears to hang about exactly straight with the leadouts at the top edge of the wingtip.  Looks like that's about where yours are too, or maybe a skosh higher, so I guess we're on the same page there.  I'll make a plywood guide like yours. 

Glad to see you're chunking those wheels...I know I'm sounding kinda anal about it, but they weigh around 1/4 ounce each and that's 1/2 oz. at the front we'd certainly be better off without. The wheels I put on weigh exactly nothing on my scale--don't budge it at all.  I guess they're just a few grams each.  I think I'll also use short pieces of small fuel line for wheel keepers, rather than the collars I normally use, for the same reason. You think that'll work?  I saw it on another guy's model and it seemed pretty secure although of course I didn't see it fly. 

I'll most likely finish mine with auto primer and Rustoleum.  But I'm not really in a hurry to do it; hafta go out in the garage because of the fumes and overspray, and it's not heated, nor even attached.  And it is January in MN.  I'll wait for a day above freezing, maybe.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 19, 2007, 03:08:28 PM
It is shaping up ain't it?
I just wrapped the thread and used a touch of ca to hold it there. When the other half of the fairing went on I pressed the fairing into the thread. The whole job took about an hour and I think it's worth putting them there. This is too unusual a model not to.

About that vertical cg...........John Paris built a hollow log model last year and put the bc on the bottom of the wing as per plans. When he flew it the outboard wing hung way low. That was the heads up for this model. I kinda figured yours would be about the same as mine. I'm glad we cought it.

I hadn't ever considered fuel line for wheel keepers. My gut says it won't work. My head says if Ray thinks it will work it probably will.

Auto primer and Rustoleum would put us about even for a race to the finish, but like you, I'm not in that big a rush. My finishing plan is to brush about 5 coats of clear dope on it. Sand it. Spray a couple coats of clear, then sand again. Next will be shoot colors. I'm going to do it in red with a white outline.

Only thing left for me now is to make a windscreen. I'm going to try to cut a frame for it out of some wood laminate I have here. If (big IF) it works I'll glue it on and paint it the same color as the rest of the model. Then stick a clear piece behind it.

I put it back together for one last dry fit. I couldn't resist taking more pictures. I really like this model!!

I plugged all the holes and even added fillets.  y1
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 19, 2007, 04:02:03 PM
Very nice, Frank...VERY nice.  Those fairings on the LG do look good, I guess I'll have to follow suit.  Two pieces of balsa with the wire sandwiched between...I could do that. 

The thing on the wheel keepers is, I imagine the weight of the wheels (there I go again) would make a difference too...a lighter wheel wouldn't produce so much centrifugal, or centripedal, or whatever, force.  But you know, just because I think a thing might work, it does not necessarily follow that it does...I've proved that more times than I care to think about.

It just occurred to me:  If that rotor doesn't spin, but just sits there as the plane flies around, it's sure gonna be disappointing!  That's the biggest reason I'm even building this thing, is to see the rotor spinning while airborne--it better do it!

Oh hey, since you lightened your fuselage right through the floor of the cockpit, where you gonna seat your pilot?  You are gonna have a pilot, aren't you?  You have to have a pilot. Almost as important as light wheels.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 19, 2007, 04:59:58 PM
Thanks Ray-----The rotor is going to spin and create lift I promise. I took the model outdoors yesterday to show it the sky and warn it about the ground. As I was walking with it the rotor turned.

Doh!! The pilot, of course, the pilot. I guess I'm going to have to cut a floor and glue it in there. It wouldn't do not to have a pilot now, would it? Somebodys got to drive!! y1

The wheel fairing is made up of three pieces. There is a leading edge piece that sandwiches between the two fairing sides along with the lg wire. This makes it easier to bend the fairings when gluing the trailing edge.
Title: Re: BHM 1/2A auto gyro
Post by: Richard Grogan on January 19, 2007, 05:35:08 PM

Doh!! The pilot, of course, the pilot. I guess I'm going to have to cut a floor and glue it in there. It wouldn't do not to have a pilot now, would it? Somebodys got to drive!! y1

Hey, Frank!

Hows about taking a packing peanut and painting it fleshtone(or peanut color) and doing a Mr Peanut pilot??!!
That might be pretty cool, and lightweight too! Or just use a real peanut. Might have to fuelproof him though!!

 DK^
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 19, 2007, 06:19:47 PM
Richard, that's perfect...I was considering a styrofoam cutout to save weight, but the packing peanut will be just right.  Dunno about Frank, but I thank you!

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 19, 2007, 06:23:22 PM
Thanks Ray-----The rotor is going to spin and create lift I promise. I took the model outdoors yesterday to show it the sky and warn it about the ground. As I was walking with it the rotor turned.

Doh!! The pilot, of course, the pilot. I guess I'm going to have to cut a floor and glue it in there. It wouldn't do not to have a pilot now, would it? Somebodys got to drive!! y1

The wheel fairing is made up of three pieces. There is a leading edge piece that sandwiches between the two fairing sides along with the lg wire. This makes it easier to bend the fairings when gluing the trailing edge.

OK, I was a little confused at first but I get it now, you pull the TE's together and glue them, gives the fairing a natural airfoil.  Very clever.  I shall steal that idea also, thank you very much.  Thanks for the email; your last sentence above was the final piece of info I needed.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 19, 2007, 07:38:18 PM
Yes but first---glue that leading edge to one side of the fairing-then glue the piece with the leading edge  to the wire (ca will do just fine) then glue the other fairing side to the piece on the wire.

Thanks very much for stealing my ideas.........I stole them too. y1

Now for the good part.----I managed to make a frame for the wind screen. First I putzed with paper till I had a template. Then I traced the template onto a piece of 1/16 ply---then I cut out the insides (window panes?) with the scroll saw---then I filed it until it looked good--then I used the scroll saw to cut out the whole windscreen---sanded and filed till it looked good--then I soaked it with Windex (the ammonia softens wood) and started bending till it would seat on the model---then I glued it on and used a little filler (Elmer's Plasic Wood). It came out good. It's an awful little feature but I think it will help. I did use the windscreen to cut a piece of clear plastic which I'll stick on after it's painted.
The whole job took an hour or so. ;D ::)
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 19, 2007, 07:41:35 PM
Hey, Frank!

Hows about taking a packing peanut and painting it fleshtone(or peanut color) and doing a Mr Peanut pilot??!!
That might be pretty cool, and lightweight too! Or just use a real peanut. Might have to fuelproof him though!!

 DK^

That's an excellent idea Richard!!
I'm glad to know you've peeked in on this thread. I've been thinking for a while that Ray and I were the only ones here. y1
Title: Re: BHM 1/2A auto gyro
Post by: Richard Grogan on January 19, 2007, 09:33:34 PM
That's an excellent idea Richard!!
I'm glad to know you've peeked in on this thread. I've been thinking for a while that Ray and I were the only ones here. y1
I like the little stuff too. Good to check on you guys to see if I can learn something new too! This Project looks like fun!! Looked like a peanut man would fit right into that hole. And, if you get mad, you can just crack his scull and eat his"peanut brain" hehehe.....that would blow some newcomer's mind!! Just kiddin..These birds look like a hoot to build and will be to fly also. Pappy DeBolt would be proud of both of you guys!
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 19, 2007, 10:39:02 PM
Yes, Richard the little stuff is what makes the magic. This little plane has been a ton of fun to build and I've had a blast building along with Ray on it. The Queen Bee build was a load of fun too. I'd like to do another half A build on line with you guys again. Any ideas?
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 20, 2007, 09:35:09 AM
Yes, Richard the little stuff is what makes the magic. This little plane has been a ton of fun to build and I've had a blast building along with Ray on it. The Queen Bee build was a load of fun too. I'd like to do another half A build on line with you guys again. Any ideas?

I'll keep an eye out for another 1/2A build.  I agree it's been (and continues to be) a hoot. 

Your windscreen is just plumb cute, as they say in OK.  I thought of trying to paint a frame on the edge of mine to make it stand out a little more; I may try it yet, maybe with fingernail polish or something.  But your wood frame takes the prize on that little detail.

I got my LO guide fabbed and on, and the old eyelets removed and holes plugged.  Glad I did it, it looks better and will certainly function better.  I'll get pics on this evening.  Also working on the LG fairing; yes, I get the whole concept now, about gluing the LE together around the wire before pulling the TE together, etc.  Thank you muches, Frank. 

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on January 20, 2007, 10:23:28 AM
Here is a little thing that I do;
I round off the top of the rotor shaft and burnish it a little, I think that it might cause less friction, probably not but.....
This is not that important because the test models were just left as is with nor problem at all.
Ray,
will I see an Autogiro in your line up too?
Larry
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 20, 2007, 10:42:39 AM
I'll keep an eye out for another 1/2A build.  I agree it's been (and continues to be) a hoot. 

Your windscreen is just plumb cute, as they say in OK.  I thought of trying to paint a frame on the edge of mine to make it stand out a little more; I may try it yet, maybe with fingernail polish or something.  But your wood frame takes the prize on that little detail.

I got my LO guide fabbed and on, and the old eyelets removed and holes plugged.  Glad I did it, it looks better and will certainly function better.  I'll get pics on this evening.  Also working on the LG fairing; yes, I get the whole concept now, about gluing the LE together around the wire before pulling the TE together, etc.  Thank you muches, Frank. 

--Ray

You know this online building is a real blast. I can't remember having so much fun building. There are two models that I've had a hankering to build--Fierce Arrow & SE-5. I could get into either of those for a 1/2 A build. It would be nice to complicate the dickens out of them. Full body, built up wing> Mybe a Norvel .061 for power. I'm dreaming here. The SE-5 could be allout scale............................oh well.

Yup the windscreen is aa humdinger. The surprising thing was that it wasn't hard to do at all....once I got started it was just fun, no hassle at all.

I'm looking forward to seeing your pictures tonite. I'll bet if you paint the outline on your wind screen it will be very cool. I think nail polish is fuel proof.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 20, 2007, 12:08:43 PM
Here's the last building picture............I started doping it a little while ago.

Ray I plugged the cockpit--now to find or make a pilot. I think the peanut idea is way cool but I want something more serious.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 20, 2007, 04:19:15 PM
Here is a little thing that I do;
I round off the top of the rotor shaft and burnish it a little, I think that it might cause less friction, probably not but.....
This is not that important because the test models were just left as is with nor problem at all.
Ray,
will I see an Autogiro in your line up too?
Larry

Hi Larry,

Hope your vacation was pleasant.  I put a small washer under the rotor hub on top of the pylon, so I don't think there'll be any issue with friction at all.  Frank's right, it does spin very freely in the slightest breeze.

If you're asking if I'm gonna design an autogyro for my lineup,  I - don't - think - so!  As stated before, I know virtually nothing about these things; it would take a serious effort at designing "by guess and by golly", test flying, redesigning, test flying, trying something else, test flying...you get the picture. Got too many other irons in the fire to make that kind of committment. I'm content to let you corner the market on autogyros!

 This is a neat little ship, by the way; been a real fun experience building it. 

Frank, here's the promised pics of the LO guide as perceived by me.  I have since these shots put on fillets and filler, and have the LG struts about 3/4 done.  I stripped my model back down--rotor is off, controls are off, cowling and engine are off, windscreen is off--preparatory to finishing.  So these will probably be the last pictures until I'm ready to put it all back together again.

--Ray

P.S. that Fierce Arrow might be fun...no kit, just plans? Not that there's anything wrong with that...
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 20, 2007, 04:45:54 PM
Awesome Ray.........the extra holes will give you leeway. Good idea. And the height looks good. I do hope you'll give us a peek at the gear fairings.

About the Fierce Arrow........I have a Bratco Hexdrone over here. It's powered by a Norvel .061. I flew it once on 35 foot lines but they were way to short. It looked like 52 ft. lines would be better. The plane flew stable as all get out. I think if we used it for a starting point......................and build a 1/2 A fierce arrow. The whole thing is there all we'd need to do is generate the airfoil, engineer the airframe add a fuselage and vertical fin and we'd have it.
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on January 20, 2007, 04:50:40 PM
Ray,
         After you finish this one you will be an expert, but then it is easy to be an expert when you are all alone in your field. I got lucky I had Walt to design mine, then a hand full of fliers to make suggestions. One guy enlarged it to a .35 size and used balsa rotors.  LL~
       I made two, one from a magazine with a Mc Coy .35 crankcase as the rotor bearing, it had bass wood rotors  DK^ and the other was a Scientific kit. I was so impressed that I did not want to kit any of them. At a partners meeting my partners suggested that it would be a good kit. I talked it over with our design team and with a few rotor modifications I was convinced.  In the scientific kit the rotor spun intermittenly and would leave the model if they got a real good spin going. We fixed all of that.  HB~> easy. We had to keep it as close to the way Walt designed it so it could enter Musciano contest and that was a consern.
          I am glad that you are enjoying building the kit, I hope that there are many more hours of enjoyment in it for you.
Larry
          
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 20, 2007, 05:00:18 PM
Larry, welcome back. I too hope you had a great vacation. As you can see we've been busy with these puppies.
Here is a question I hope you can answer..........Do you think our models are still with in the design range to be legal at a Musciano contest?

BTW.........this model really snagged me. It cought my imagination and has been a pure pleasure to build.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 20, 2007, 06:10:40 PM
Awesome Ray.........the extra holes will give you leeway. Good idea. And the height looks good. I do hope you'll give us a peek at the gear fairings.

About the Fierce Arrow........I have a Bratco Hexdrone over here. It's powered by a Norvel .061. I flew it once on 35 foot lines but they were way to short. It looked like 52 ft. lines would be better. The plane flew stable as all get out. I think if we used it for a starting point......................and build a 1/2 A fierce arrow. The whole thing is there all we'd need to do is generate the airfoil, engineer the airframe add a fuselage and vertical fin and we'd have it.

I'm game if you are...Deltas I can handle.  Hafta pick up some original Fierce Arrow plans, or at least some pictures, and see what it would take to get down to our size.  The Fierce Arrow is a .35-.40 size plane isn't it?  Or am I completely confused?

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on January 20, 2007, 06:49:23 PM
           My vacation had it's good and bad sides. I got away for 3 days, I had fun, and it did not cost much.....all pluses. I did have a bad reaction to my medication, my doctor has not returned my call, and I am swamped in new orders.....well so-so.
My girl friend of 30 years was very understanding so all is well (yes I know I have comittment problems).
         Next month at the partners meeting I am going to prepose a "Special Craftsman Model Kit" line. It will have different models than our other lines have but you will need to do a lot more work to build them. You will need to carve the canopy, airfoil the wings and use patterns to make some parts like the stabilizer, rudder, fin, and elevators. The plans will have full size patterns and detailed instructions with a lot of drawings on how to do things. The kits will be aimed at those who enjoy building and want to do more than what we allow them to do in our kits now. What do you think? The two kits in this line so far would be the "Bullet" and "Cyclon" both Scientific kits. I am also asking to go ahead with some non flying desplay scale model kits in our Junior Ace line.
Larry
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 20, 2007, 07:51:41 PM
I'm game if you are...Deltas I can handle.  Hafta pick up some original Fierce Arrow plans, or at least some pictures, and see what it would take to get down to our size.  The Fierce Arrow is a .35-.40 size plane isn't it?  Or am I completely confused?

--Ray
So.......let's build a 1/2A Fierce Arrow.!!
How does this sound for starters?

Power Norvel .061
Use the Bratco Hexdrone for a starting point.

I have a set of plans for the Fierce Arrow (2 actually) so I will send you one of them.
If this is good for you, then I will clear the table tomorrow and measure out the Hexdrone and develop construction drawings for me to use. Then at the beginning of the week I will box up the Hexdrone and a set of Fierce Arrow plans and ship them to you. Then you can measure it out and start your construction drawings. At that point we start a new thread and start comparing design ideas. We develop a cool model. Oh..and have a load of fun.

here is a picture of the Hexdrone and I can e-mail you pictures of the Fierce Arrow.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 20, 2007, 07:58:40 PM
           My vacation had it's good and bad sides. I got away for 3 days, I had fun, and it did not cost much.....all pluses. I did have a bad reaction to my medication, my doctor has not returned my call, and I am swamped in new orders.....well so-so.
My girl friend of 30 years was very understanding so all is well (yes I know I have comittment problems).
         Next month at the partners meeting I am going to prepose a "Special Craftsman Model Kit" line. It will have different models than our other lines have but you will need to do a lot more work to build them. You will need to carve the canopy, airfoil the wings and use patterns to make some parts like the stabilizer, rudder, fin, and elevators. The plans will have full size patterns and detailed instructions with a lot of drawings on how to do things. The kits will be aimed at those who enjoy building and want to do more than what we allow them to do in our kits now. What do you think? The two kits in this line so far would be the "Bullet" and "Cyclon" both Scientific kits. I am also asking to go ahead with some non flying desplay scale model kits in our Junior Ace line.

Too bad about the meds-vacation is the worste time to not feel well. I'm very happy thaat you are "swamped" with orders, that's what keeps BHM going.

A "Craftsman's Series" sounds like a good idea. I am not familiar with either of the planes proposed for the series. Is it possible to get a sneek peek?


Larry
Title: Re: BHM 1/2A auto gyro
Post by: Richard Grogan on January 21, 2007, 01:04:38 AM
So.......let's build a 1/2A Fierce Arrow.!!
How does this sound for starters?

Power Norvel .061
Use the Bratco Hexdrone for a starting point.

I

Sound good Frank!

I have a Hexdrone also thats not been fueled yet. Has  a BW 049 Cox on it and just looks like a badass critter.I think the Norvell .061 is a tad too much for the size. looks like a do-able scratch repo into something a little different. seems like a good airfoil.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 21, 2007, 01:15:03 AM
Sound good Frank!

I have a Hexdrone also thats not been fueled yet. Has  a BW 049 Cox on it and just looks like a badass critter.I think the Norvell .061 is a tad too much for the size. looks like a do-able scratch repo into something a little different. seems like a good airfoil.

How in the world did you end up with a Hexdrone with a BW .049 on it!!
Title: Re: BHM 1/2A auto gyro
Post by: Richard Grogan on January 21, 2007, 01:47:24 AM
I bought it years ago when they didnt offer a included engine.....musta been 5 years ago when it was first introduced...
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 21, 2007, 02:53:00 AM
So.......let's build a 1/2A Fierce Arrow.!!
How does this sound for starters?

Power Norvel .061
Use the Bratco Hexdrone for a starting point.

I have a set of plans for the Fierce Arrow (2 actually) so I will send you one of them.
If this is good for you, then I will clear the table tomorrow and measure out the Hexdrone and develop construction drawings for me to use. Then at the beginning of the week I will box up the Hexdrone and a set of Fierce Arrow plans and ship them to you. Then you can measure it out and start your construction drawings. At that point we start a new thread and start comparing design ideas. We develop a cool model. Oh..and have a load of fun.

here is a picture of the Hexdrone and I can e-mail you pictures of the Fierce Arrow.

Sounds like a great plan to me.  That approach might take a lot of coordination through this forum, but that's where the fun is, isn't it?  Bring it on!

Richard, the Norvel .061 is a powerhouse, all right.  We'll just have to scale the little Fierce Arrow accordingly...flying blind here, but the Hexdrone dimensions do appear a little small for it.  You might recall my LittleAxe full-bodied stunter is 36" span, and as long as it's built light the .061 is plenty of power for it.  I agree with Frank, it's a good choice of engine to design around.  Except we need to lose that Norvel tank mount and go with beams.  Tank's 'way too small for the thirsty .061.  Or I guess we could use an adapter mount, seems like one is available.  Hmmmm, getting a little ahead of myself.

Boy, we all seem to be up a little late tonight, don't we?

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 21, 2007, 06:10:15 AM
Sounds like a great plan to me.  That approach might take a lot of coordination through this forum, but that's where the fun is, isn't it?  Bring it on!

Richard, the Norvel .061 is a powerhouse, all right.  We'll just have to scale the little Fierce Arrow accordingly...flying blind here, but the Hexdrone dimensions do appear a little small for it.  You might recall my LittleAxe full-bodied stunter is 36" span, and as long as it's built light the .061 is plenty of power for it.  I agree with Frank, it's a good choice of engine to design around.  Except we need to lose that Norvel tank mount and go with beams.  Tank's 'way too small for the thirsty .061.  Or I guess we could use an adapter mount, seems like one is available.  Hmmmm, getting a little ahead of myself.

Boy, we all seem to be up a little late tonight, don't we?

--Ray

O.K. I'm in!! We'll do a .061 Fierce Arrow!!
Ray I'll get my drawing done and get the plane and FA plans off to you in a couple days.
Richard are you coming in on this one?
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on January 21, 2007, 09:08:38 AM
Frank,
         The "Cyclon" is the plane that Walt is holding in his picture on the box covers of our kits. The "Bullet" ic a modern looking sleek plane with sharply tapered wingd (24").
Larry
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 22, 2007, 06:42:43 AM
I'm still working on the Auto-Gyro. Got it all the way to primer.

We finally hve enough snow to shovel here in Detroit.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 22, 2007, 09:13:14 AM
I just squirted a coat of primer on mine a little while ago.  Tryin' to get it, and 2 other prjects, done and out of the way before we start on the --whatever it's to be called --1/2A Fierce Arrow.  Gotta come up with a name, Frank...



--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 22, 2007, 10:00:06 AM
I just squirted a coat of primer on mine a little while ago.  Tryin' to get it, and 2 other prjects, done and out of the way before we start on the --whatever it's to be called --1/2A Fierce Arrow.  Gotta come up with a name, Frank...



--Ray

The name will come as we work up the model.-----I'll be doing my measuring and drawing today for the Arrow. First I gotta wet sand the gyro and get it off the bench. I had to take a couple backward steps. I used Elmer's Wood Filler for the fillets and the dope blistered. Funny though because there was no blistering on flat spots, any way I cut out the blisters and coated with epoxy.  And now I'm moving forward again with yet another thing on the not to do list which gets longer with every model.

EDIT-------it's later in the day. Masking is starting. These little planes are hard to hold onto and mask at the same time.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 22, 2007, 07:09:21 PM
Now that's interesting...I use Elmer's wood filler too for my fillets.  I didn't think anyone else did since it's never mentioned.  You would think since it's made for harder wood (well, pine, anyway) that it would be too hard for comatibility with balsa, but it isn't.  Sands down easily.  What's that about great minds...?

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 22, 2007, 08:10:09 PM
Great minds??????????????????????????????????????????????

I never mention the Elmer's because I'm afraid somebody ( like a haloed expert type) would laugh and say it didn't work. Then I'd be screwed!!

I'm painting red as we speak. I wonder how they mask off the bottoms of the full scale low wing planes. Do you think they roll under there with a dolly and mask? Spraying must be a tuffy. Maybe they get a bunch of blankets and a couple buddies and flip the planes onto their backs.

There's a picture of my model in colors coming soon.

Where are you with yours Ray?

EDIT------I just got the masking off of the gyro. There are touch ups to do and I still need to paint the hub of the rotor. And I wish I would have used Ms. Ashley red rather than the insignia red. And I should have held out till I got stencils for lettering. But hey!!
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on January 22, 2007, 11:12:11 PM
Wow! It looks great, Frank.
         Anybody knows that they have the plane fly low and slow while the painter rides in the back seat of a convertable and paints. I am still trying to figure out how a fly lands on a ceiling and how he takes off again.....free fall?
Larry  DK^
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 23, 2007, 01:23:26 AM
Very nice...mine's still sitting out in the garage with a coat of primer on it.  I'm still trying to figure out a color scheme.  Now I bought a new digital camera and trying to figure out what all it will do.  Frantically Monocoating another model preparatory to painting.  Had another little project lined up hoping to get it whipped out before starting the Fierce Arrow tinkering...whose byline says "Too many planes, not enough time"?

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 23, 2007, 03:35:42 PM
Wow! It looks great, Frank.
         Anybody knows that they have the plane fly low and slow while the painter rides in the back seat of a convertable and paints. I am still trying to figure out how a fly lands on a ceiling and how he takes off again.....free fall?
Larry  DK^


REALLY ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ???
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 23, 2007, 03:43:15 PM
Very nice...mine's still sitting out in the garage with a coat of primer on it.  I'm still trying to figure out a color scheme.  Now I bought a new digital camera and trying to figure out what all it will do.  Frantically Monocoating another model preparatory to painting.  Had another little project lined up hoping to get it whipped out before starting the Fierce Arrow tinkering...whose byline says "Too many planes, not enough time"?

--Ray

A new camera?? Way cool.

I don't know what your paint scheme is, but you do know that you have to raise the bar with it.

I forget who says "too many planes, not enuff time. But it rings true doesn't it?

Today I fixed the most offensive bad spots in the paint job and put two coats of clear on my gyro. It's starting to get shiny now. I figure by this time tomorrow it will be RTF and I can move onto the Arrow. Actually I'm waiting till you get the box. Don't worry though in respect for your time crunch I'm waiting till Monday to send it to you. So you have a week to get other things done.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 23, 2007, 04:19:29 PM
Good, that sounds just about right.

You painted the cowling...I guess it took the paint with no problem...>?

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 23, 2007, 04:42:48 PM
Yup---------the cowling took the paint. No sanding, No primer, No nothing.
Can't wait to see your auto-gyro.
Have you considered the effect of the rotor? I noticed that like mine yours is going to rotate counter clock wise. Could that possibly turn the model in on us? HHMMMMMMM.............. ???
Title: Re: BHM 1/2A auto gyro
Post by: Bill Little on January 23, 2007, 10:20:27 PM
Frank, what did you prime and paint yours with?

Also, have you looked at Barry Baxter's site?  I *think* he has plans for a 1/2A Fierce Arrow already.  Might give you some ideas.

I have a Fierce Arrow 400 which is a surprisingly good flying plane with a McCoy RH 19.

Bill <><
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 23, 2007, 11:57:40 PM
Frank, what did you prime and paint yours with?

Also, have you looked at Barry Baxter's site?  I *think* he has plans for a 1/2A Fierce Arrow already.  Might give you some ideas.

I have a Fierce Arrow 400 which is a surprisingly good flying plane with a McCoy RH 19.

Bill <><

Hey Bill,
I painted mine with Brodak dope and primer.
I will look for Barry Baxter's Site. I hope it is posted in the hobby shop section here.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 24, 2007, 12:05:09 AM
For a little airplane this BHM Auto-Gyro is sure making a long thread!!

Well, I just finished the leadouts on my model. And it is RTF. The all up weight is 6 1/4 oz.

Check out the pushrod guide.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 24, 2007, 01:52:54 AM
Very good.  Slick little pushrod guide--washer soldered into a screw slot.  Congrats on being done!  I'm telling you, switch those wheels and you'll be under 6 oz.! 

I've about got mine sanded down, ready for color.  I did finish the monocoat job on the other, it's ready for primer.  Then a little 2-3 day project and I'm good to go on our new collaboration.  Re: Barry Baxter plans--looks like we may be trying to re-invent the wheel?  You want to re-think our subject?  That Humbug's still sitting there.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 24, 2007, 05:15:48 AM
Very good.  Slick little pushrod guide--washer soldered into a screw slot.  Congrats on being done!  I'm telling you, switch those wheels and you'll be under 6 oz.! 

I've about got mine sanded down, ready for color.  I did finish the monocoat job on the other, it's ready for primer.  Then a little 2-3 day project and I'm good to go on our new collaboration.  Re: Barry Baxter plans--looks like we may be trying to re-invent the wheel?  You want to re-think our subject?  That Humbug's still sitting there.

--Ray

I guess that pushrod guide has been around for a long time. I sure like it.
I do plan on getting different wheels. I had to put the kit wheels on in order to be able to call this a done project.
I am rethinking our next project. I'd like to find Barry Baxter's site. Do you have a link?

I'll be looking forward to seeing pix of your Gyro. Mine is very nose heavy.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 24, 2007, 08:31:27 AM
I just found it:  www.controllineplans.com

He calls it a "1/2Arrow", kinda clever when you think about it. 30" span, 254 sq. in.  Listed under his "1/2A or so" page.

If you look in his "Sorts" (sports?) category, "designers" page, you can find both the 1/2Arrow ("Barry Baxter designs") and the original Fierce Arrow 400 ("Bill Netzeband designs") for comparison.  Frankly, Frank (hehe) I think he missed it...made a really cool looking ship look rather ordinary.  We might could do better. 

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 24, 2007, 09:16:30 AM
I just found it:  www.controllineplans.com

He calls it a "1/2Arrow", kinda clever when you think about it. 30" span, 254 sq. in.  Listed under his "1/2A or so" page.

If you look in his "Sorts" (sports?) category, "designers" page, you can find both the 1/2Arrow ("Barry Baxter designs") and the original Fierce Arrow 400 ("Bill Netzeband designs") for comparison.  Frankly, Frank (hehe) I think he missed it...made a really cool looking ship look rather ordinary.  We might could do better. 

--Ray

Thanks Ray. I just went and looked. He did miss it by quite a bit. I added the link to my favorites for future reseach (theft).
I do think we could do better. I have some ideas. Do you think we should get a thread started so as not to hijack this one?

And speaking of the gyro---------I'm waiting on some epoxy to cure and am trying a new experiment. See picture. VD~
Title: Re: BHM 1/2A auto gyro
Post by: Leroy Heikes on January 24, 2007, 10:24:28 AM
Frank;
    It would still be legal at our Musciano event. The only thing is what event would you enter it in? It may not be aerobatic, and I do not think it would be fast, but it would be a blast to see.

Leroy
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 24, 2007, 10:38:09 AM
Frank;
    It would still be legal at our Musciano event. The only thing is what event would you enter it in? It may not be aerobatic, and I do not think it would be fast, but it would be a blast to see.

Leroy

You got me there Leroy. At least I could fly it and enter it in the beauty contest. I'm hppy it's legal anyway.

Have you had a chance to work on yours? ???
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 24, 2007, 03:11:49 PM
Thanks Ray. I just went and looked. He did miss it by quite a bit. I added the link to my favorites for future reseach (theft).
I do think we could do better. I have some ideas. Do you think we should get a thread started so as not to hijack this one?

And speaking of the gyro---------I'm waiting on some epoxy to cure and am trying a new experiment. See picture. VD~

Whatcha doin'--carving a face into Larry's little pilot doll?  Cute...

I just put the base color on mine; probably 1 more coat of it, then masking for the trim.  Then I'll post pics. 

Yup, I think a new project deserves a new thread--meanwhile, check it out:  We're on page #5!  A new record!

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: Mike Spiess on January 24, 2007, 04:56:11 PM
I just found it:  www.controllineplans.com

He calls it a "1/2Arrow", kinda clever when you think about it. 30" span, 254 sq. in.  Listed under his "1/2A or so" page.

If you look in his "Sorts" (sports?) category, "designers" page, you can find both the 1/2Arrow ("Barry Baxter designs") and the original Fierce Arrow 400 ("Bill Netzeband designs") for comparison.  Frankly, Frank (hehe) I think he missed it...made a really cool looking ship look rather ordinary.  We might could do better. 

--Ray


Hey I even have 2 PAW 1/2A's %^
WOW this topic is 5 pages long already and I haven't even started my auto gyro
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 24, 2007, 05:27:29 PM
Whatcha doin'--carving a face into Larry's little pilot doll?  Cute...

I just put the base color on mine; probably 1 more coat of it, then masking for the trim.  Then I'll post pics. 

Yup, I think a new project deserves a new thread--meanwhile, check it out:  We're on page #5!  A new record!

--Ray

Yup---I took a shot at carving the pilot out of Larry's clothespin. The wood is really, really hard!! And I'm not much of  a wood carver. I stuck it in there anyway. I cut off the clothes pin right up to the pilots head so he probably weighs less than most store bought pilots. Maybe even less than a packing peanut. No fingers were hurt. ;D
Even though the pilot looks more like a skull or the villain in Halloween 3 I'm posting a picture anyway.

I also tried gluing that plasic windshield in behind my windscreen frame but the glue (CA) wouldn't take. Any ideas?

5 pages!!! I think 1/2A projects lend themselves to online building. Could you imagine how long a thread would be if we tried a .40 size stunter?

I'll ship the box out to you Monday. I think a good time to start that new thread would be when you get the box.

Title: Re: BHM 1/2A auto gyro
Post by: Mike Spiess on January 24, 2007, 05:58:33 PM
DON"T SHIP THE BOX!!!! I allready got it I just have been too busy building cabinet for the downstairs bath.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 24, 2007, 06:02:00 PM
DON"T SHIP THE BOX!!!! I allready got it I just have been too busy building cabinet for the downstairs bath.

I'm sending the box to Ray.

I was wondering why you weren't building your gyro. Now I know. You're building a cabinet. How much does it weigh? VD~
Title: Re: BHM 1/2A auto gyro
Post by: Mike Spiess on January 24, 2007, 06:04:12 PM
Don't have a scale big enought to weight it n~
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 24, 2007, 06:32:43 PM
Don't have a scale big enought to weight it n~

 LL~
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 24, 2007, 08:20:05 PM
Frank, I guess you could try good ol' epoxy; or some thinned-down Goop would probably stick to it. (The windscreen, I'm talking about.)

Pilot looks...a little excited, or something.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on January 24, 2007, 08:50:22 PM
Frank,
         I know that this is a far out idea but how about Tube Glue for the windshield? Say.....Testors.
Larry
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 25, 2007, 03:47:00 AM
I have to position the plastic onto the windscreen frame which means it will be sliding around some. It would get smeared if I used any of the glues you guys mentioned. The CA bleeds in and that's what I need. Maybe some kicker will do it.
Title: Re: BHM 1/2A auto gyro
Post by: Leroy Heikes on January 25, 2007, 05:11:36 AM
Frank;
    Go to the hobby shop and pick up some RC56 or formula 56 (what ever they are calling it these days) It is also know as canopy glue it goes on white thin and runny, but dries crystal clear in about 24 hrs. I have never had a canopy come off whether it is glued to wood, dope, or $kote.

Leroy
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 25, 2007, 05:24:17 AM
Frank;
    Go to the hobby shop and pick up some RC56 or formula 56 (what ever they are calling it these days) It is also know as canopy glue it goes on white thin and runny, but dries crystal clear in about 24 hrs. I have never had a canopy come off whether it is glued to wood, dope, or $kote.

Leroy

Does the stuff set up pretty quick?
Title: Re: BHM 1/2A auto gyro
Post by: Leroy Heikes on January 25, 2007, 05:56:19 AM
Frank;
    It will hold in about an hour, but should be allowed to dry over night before going flying.
Leroy
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 25, 2007, 06:03:04 AM
Thanks Leroy.

Do you have any idea when you'll start your gyro?
Title: Re: BHM 1/2A auto gyro
Post by: bob branch on January 25, 2007, 10:51:07 AM
Leroy

You mentioned you have never had RC 56 let go when glued to cote. Do you cut a srip in the cote to expose the underlying wood or have you had sucess without cutting the strip to expose the wood? I've always cut the strip but I'd sure like to not have to.

Bob
Title: Re: BHM 1/2A auto gyro
Post by: Leroy Heikes on January 26, 2007, 05:50:59 AM
Bob;
    On my RC ships I did not cut a strip when using RC 56 to glue to plastic coverings. I have not used RC 56 to glue the canopies on plastic covering on my C/L models because most of my C/L planes have had dope finishes, and it sticks to the dope just fine. I at least have not lost a canopy when using RC-56.

Leroy
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 28, 2007, 03:28:19 AM
Well, I finished my Autogyro, really just about finished it off...tried to get "too cute" on finish and made a mess of it, very disappointing, I don't like it at all, bad color scheme, worse execution...kinda ashamed to post any pics of it (yes, I will, give me time to mourn awhile first).  I feel like repainting it all black like I threatened to do before, but it'd be so heavy then it probably wouldn't get off the ground.  Maybe it would taxi fast enough to get the rotor spinning, that's really all I wanted to see anyhow...

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 28, 2007, 03:52:24 AM
Well, I finished my Autogyro, really just about finished it off...tried to get "too cute" on finish and made a mess of it, very disappointing, I don't like it at all, bad color scheme, worse execution...kinda ashamed to post any pics of it (yes, I will, give me time to mourn awhile first).  I feel like repainting it all black like I threatened to do before, but it'd be so heavy then it probably wouldn't get off the ground.  Maybe it would taxi fast enough to get the rotor spinning, that's really all I wanted to see anyhow...

--Ray

I'm sorry it didn't work out the way you planned Ray. I'm sure it's not as bad as you make it out to be. y1
 
Title: Re: BHM 1/2A auto gyro
Post by: bob branch on January 28, 2007, 07:18:05 AM
Ray

Don't worry about the finish. As Frank delights in telling me (as I am moaning and groaning and trying to breath) "sanding is the soul of stunt." I am currently stripping some early  finish of a Strega back down to bare wood.  Now that I think of it, maybe I should have tried  a stripper... Been at it for 2 weeks now. I am down to the top of one wing panel and the top of the tailplane and I will be done. Besides the results of sanding down a finish can be breathtaking. I believe Frank's Victory got screwed up in the finishing process due to very high humidities and he had to sand a bunch of it down a good bit and refinish. The result was a very high teen point finish. Just look at it as primer.

Bob
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 28, 2007, 01:10:45 PM
So you're telling me I should sand the bad finish all off and start over...have you looked at the pictures of this plane?  See all those struts?  I shudder to think of trying to sand around them to remove the paint.  'Way too much effort to me, especially on a novelty sport plane. But just painting over it would be too heavy.  Nah, I think I'll leave it as is for a testament to my unmatched ability to goof up a plane.  As Frank said in another thread, it should still fly.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: bob branch on January 28, 2007, 02:05:06 PM
Ray

I hear ya regarding detail sanding on thin wood. Yuck. Anyway, part of the deal with all these older log fuse planes was when we originally built them as kids none of us knew what sandpaper was or what it was for. I don't think I ever taped a curved line til I did a combat streak as it was on the box with the curvy pattern you see on flight streaks and that was the last plane I completed as a kid before I took up boat building at age 13 and gave up models. Infortuantely, I did learn about taping curved lines in boat building... much to my chagrin.

bob
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 28, 2007, 04:31:10 PM
YOU GUYS!!

Ray just leave it alone and move on to the Arrow. Go fly the gyro.  ;D

Bob, wax on wax off. Only with sandpaper. y1
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 28, 2007, 07:19:53 PM
I picked up some vinyl lettering from a sign shop this weekend.
How do you like it now?? HH%%
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 28, 2007, 08:47:06 PM
So I guess you're thinking Larry'll give you extra-special treatment, and a few free kits, for being a flying advertisement for him???  Well, you may be right...

Looks very, very nice.  I'll post a pic or two of my disaster in a day or so. 

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: Robert McHam on January 28, 2007, 08:53:10 PM
Wow does that ever st it off well! Nice!

Robert
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 29, 2007, 04:11:53 AM
Larry has pix of a full scale auto-gyro that is hanging in a museum somewhere. It is on the Black Hawk Nodels web site. I copied it to post here. I copied the paint job and then when I had the opportunity to get the lettering I couldn't pass it up. At first I was going to go with Detroit News like the full scale model, but then I figured I could stay on topic better and win brownie points by going with BHM instead. I'll have to take the model apart again to add a coat or two of clear to seal the lettering.
I really like. I'm glad you guys do too.
Title: Re: BHM 1/2A auto gyro
Post by: Richard Grogan on January 29, 2007, 06:48:56 AM
Very, very nice Frank ! I didnt realize you were going scale with it! You out did yourself this time!! %^@
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 29, 2007, 07:06:34 AM
Very, very nice Frank ! I didnt realize you were going scale with it! You out did yourself this time!! %^@

Thanks man...............I didn't know I was going scale either till I saw the picture of the full size plane. It looked just right so that's where I went with it. Now to see what it does in the air!! y1
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on January 29, 2007, 08:14:39 AM
Very nice Frank! I am going to use one of your pictures on the box end flap. You the man! HH%%
Larry
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 29, 2007, 08:17:55 AM
Very nice Frank! I am going to use one of your pictures on the box end flap. You the man! HH%%
Larry


That's great Larry....It would be great if you could put the picture on the box lid too!! I'd have to buy a bigger hat......C'mon man do it. y1
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 29, 2007, 08:23:06 AM
You are shameless...
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 29, 2007, 08:27:07 AM
You are shameless...



HO........in Detroit I'd be called a HO!!  HO HO HO <=
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on January 29, 2007, 09:44:09 AM
I used one of your earlier pictures with the blue background and no lettering, I do not want people to think that decals come in the kit. Now you need to buy another just to show it off.  LL~
Larry
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 29, 2007, 01:18:37 PM
OK guys, here they are...for your viewing pleasure.

I must admit, it doesn't look quite so bad with the cowling attached...or else I'm just getting used to the ugliness.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 29, 2007, 01:21:17 PM
I'm not laughing..........looks o.k. to me.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 29, 2007, 01:29:04 PM
Every time I look at it, I think of a giant clown shoe.  I guess it's the colors, first of all...then the bleeding under the tape, ad the trim color edges getting raggy from pulling the tape off...don't make me go on.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 29, 2007, 01:42:52 PM
All of that for sure............the scheme saves it. the lettuce edge could go away. that's what mine looked like when I first took the tape off. they always bleed for everybody. that's why they invented the touch up gun.

what kind of paint is on it?
Title: Re: BHM 1/2A auto gyro
Post by: Dennis Vander Kuur on January 29, 2007, 02:21:20 PM
Ray,
Your autogyro looks great! I paticularly like the way the engine's blue cylinder adds a third color to the paint scheme. Like I told Frank, I have really enjoyed following you two in "The Adventure of the Gyro Twins".
DennisV
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 29, 2007, 02:50:08 PM

what kind of paint is on it?

Rattlecan Rustoleum of course...I heated up the cans as I always do (in hot water, not on the stove!) and did my spraying in my unheated garage as usual, but I think the sub-zero temp was too much for it, for one problem.  Never have any trouble in temps down to 20s or teens...Then I touched up the worst spots (yes, there were much worse) with my wife's fingernail polish (don't tell, don't tell). Biggest problem with that is, she doesn't have any white...

Another saving grace is by the time I got the pics reduced to 60k or thereabouts, they had lost much of their detail, disguising some of the booboos.  Planes always look better in pictures than in person, you know? Oh by the way, Frank, these were taken with my new camera.  On the originals, you can zoom down to a gnat's whisker and not lose any clarity at all--gonna be great for showing tiny details of things. If I can figure out how to control it.

Only thing that really turned out satisfactorily to me was the frame around the windscreen, again painted with fingernail polish.  nice and delicate, not overbearing, just enough to define the windscreen.  Say, fingernail polish IS fuelproof, isn't it?

Dennis, I appreciate your remarks.  The blue cylinder does add a little interest.  My first intent was to go with a two-tone blue color scheme to complement the engine, but changed my mind; I was afraid I'd end up with clashing blues!
 
"Gyro twins..." clever. I been called lots worse. We're infamous, Frank.

Finished my other projects, now excitedly awaiting the Fierce Arrow plans. 

--Ray 
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 29, 2007, 03:43:37 PM
SEE..........I  TOLD YOU IT WASN'T SO BAD. y1

If Dennis likes it...it's golden.

I've never tried Rustoleum but based on your other models I'd say the sub zero temps didn't help much. And shame on you for using your wife's nail polish!! I hope you know of course that she knows you do that sort of thing. Women just know. Now that I think of it we men are lucky in the respect that we have nothing women can or care to sneak in and use.

Your new camera seems to be doing real well. The pictures are very nice. Lord knows we need them in our line of work. And speaking of work the job you did on the LG fairings came out good.

I guess we'll be moving on to the Arrow thread next eh Ray??
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 29, 2007, 04:28:29 PM
Oh, I forgot...it weighs in, RTF, at exactly 6 oz.  I was hoping for a little less but I guess that ain't bad what with the extra hardwood I put in for the MM.  And wonder of wonders, the balance came out exactly right!  1/2" behind the LE.

Oh yeah, I'm more than ready for the Arrow.  We almost need a new clean thread just for the construction stuff.  We about filled up the current one just deciding which one to build.

Maybe I'll post a pic or two of my recently-done "other projects"--"new & improved" prototypes of my Minnie Delta and LilGeo designs.  You know me, always tinkering trying to make 'em better. 

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: Richard Grogan on January 29, 2007, 04:30:31 PM
Every time I look at it, I think of a giant clown shoe.  I guess it's the colors, first of all...then the bleeding under the tape, ad the trim color edges getting raggy from pulling the tape off...don't make me go on.
It looks just fine Ray! I think you were just beating yourself up a little like we all do when expecting more.
Heck, by the way you were carrying on, I was expecting to see something my cat would fingerpaint(pawpainting) LL~ !!!! It looks like a good companion to Franks. Just go fly it when you can chip the ice off the door handles of the car! It'll look great in the air. Besides, you didn't want a front row stunter finish anyway..its meant to be a little goofy lookin'!! :P
Title: Re: BHM 1/2A auto gyro
Post by: Richard Grogan on January 29, 2007, 04:34:09 PM
All of that for sure............the scheme saves it. the lettuce edge could go away. that's what mine looked like when I first took the tape off. they always bleed for everybody. that's why they invented the touch up gun.

what kind of paint is on it?

You can always go over the raggedy edges with a straight edge and permamarker for a new dimensional appearance.
Title: Re: BHM 1/2A auto gyro
Post by: bob branch on January 29, 2007, 06:18:51 PM
After looking at what you guys kick out in half A stuff I'm glad I didn't build with you. Don't think I could finish a light half A to that level. Hmmm, I'll just stick to ultracoting my full stunters rather than compete with you guys.

 HB~>Bob
Title: Re: BHM 1/2A auto gyro
Post by: Robert McHam on January 29, 2007, 06:46:30 PM
Ray, it really does look good. I would be proud to say that I did that!

I hate to change the subject guys but I feel I must.

I have been watching this thread ever since I signed up here and the question in my mind is:
Should the rotor blades have a positive angle of attack as I have seen pictured here on this thread or should they have a negetive AOA?

I remember reading about an autogyro model in Flying Models (Now not sure) and the rotor blades were to be mounted with negative incidence.
This struck me as very odd because I felt it would not provide lift that way. It was explained in the article how this was correct (I really do not remember the argument for this)  but the author made it sound right.I think it was to get the rotor to rotate in the proper direction.
 When I saw the pics here I thought it to be wrong so last night I did some research and found that you could go either positive or negative (so now I am really confused.)
What I gained from this was that with the proper airfoil you could get faster rotation from the rotors thus more lift generated. Down side to this was that you almost always had to start the rotor (rotors) spinning manually  (or even mechanically) as it was much more difficult than if the rotor had negative incidence.
Downside of negative AOA was that the rotor would not spin as fast thus less lift. Upside to this was that the rotor almost always would spin on its own with almost no need to spin the rotor in advance.

So... can someone smarter than me tell me how this is supposed to work properly?

Robert
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 29, 2007, 07:09:10 PM
Well Bob you've raised some good questions there.
Thanks for the kudos on our work.
Title: Re: BHM 1/2A auto gyro
Post by: Bill Little on January 29, 2007, 07:42:11 PM
HI Frank,

I must say that I am absolutely impressed with your model!  It looks like it should be MUCH bigger!  The finish is great, and it really looks neat. ;D

Bill <><
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 29, 2007, 07:46:00 PM
HI Frank,

I must say that I am absolutely impressed with your model!  It looks like it should be MUCH bigger!  The finish is great, and it really looks neat. ;D

Bill <><

Thank you Bill.........
Title: Re: BHM 1/2A auto gyro
Post by: bob branch on January 29, 2007, 07:46:19 PM
There's an idea Frank! A ST .60 gyrocopter!

bob

(if I keep this up the rest of the world is going to know how much aggivation I cause you!)
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 29, 2007, 07:50:33 PM
There's an idea Frank! A ST .60 gyrocopter!

bob

(if I keep this up the rest of the world is going to know how much aggivation I cause you!)


No problem Bob..........no aggravation at all...
Title: Re: BHM 1/2A auto gyro
Post by: Bill Little on January 29, 2007, 07:58:10 PM
To Ray:

I cannot see the flaws in the pictures, so it looks just fione from here!  And I guarantee you that you will not be able to see ant flaws ahen it's on the ends of the lines............

I found something to take off the paint edges and do it pretty safely.  At the auto parts store, they has a package of hard nylon "single edge razor blades"!

I wet sanded the edge a *little* sharper and use them to scrape the edges of the trim lines.  The end up just a *little* sharper than the edge of a credit card.

That and the "plastic erasers" from"Mars" (IIRC) sold in drafting and office supply stores work good on knocking the edges down and evening them up.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 29, 2007, 08:13:34 PM
And if you use a lite touch that same eraser will rub off overspray. You gotta go lite though.
Title: Re: BHM 1/2A auto gyro
Post by: Robert McHam on January 29, 2007, 10:34:23 PM
Quote by Bill:
"It looks like it should be MUCH bigger!"

I wish now I had said that. It's really true. They both look bigger than life. Really great job guys. Outstanding!

Robert 
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 30, 2007, 06:58:24 AM
Ray-----------why is there no pilot in your model?  n1 Who is going to drive it? ???
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on January 30, 2007, 08:05:38 AM
Ray-----------why is there no pilot in your model?  n1 Who is going to drive it? ???

Yeah, I was afraid you'd spot that, after the grief I gave you about a pilot being necessary...truth is, I got my heart set on a styrofoam peanut pilot and now I can't find one!  But I will, I will...

To all you guys:  Thanks for the encouragement and good words about the finish on my autogyro.  In retrospect, I shoulda just posted the pictures without all my whining, and let the chips (and remarks) fall where they may.  But I had envisioned it so much better...

Also thanks for the various tips on dealing with the raggy trim edges.  I have known of the credit-card-smoothing technique (although I will check out the nylon razor blade thingys), but really had never thought of outlining the trim with permanent marker to cover up those edges.  That might be just the thing it needs.  I don't suppose permanent pen markers are fuelproof, but a light shot of clear would take care of that. I may not be through with it yet!  Also the plastic eraser approach--I have a plane or two with a little overspray I can try that out on.  Always learning from this forum!!

By the way, concerning the positive angle of the rotor:  That is per Mr. Musciano's plan & design.  I know nothing about the aerodynamic theory behind it.  I can't quite picture how a freewheeling rotor at a negative AOA could produce positive lift (seems like it would be a perpetual-motion machine) but then there are many such things that escape me.  I suspect on this particular model the rotor is more for visual effect than anything else; the design has enough stationary wing to fly on.

And lastly, I agree: Frank's model is a knockout! Even if he is using it to brownnose Larry...

--Ray

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on January 30, 2007, 09:33:11 AM
Yeah, I was afraid you'd spot that, after the grief I gave you about a pilot being necessary...truth is, I got my heart set on a styrofoam peanut pilot and now I can't find one!  But I will, I will...

To all you guys:  Thanks for the encouragement and good words about the finish on my autogyro.  In retrospect, I shoulda just posted the pictures without all my whining, and let the chips (and remarks) fall where they may.  But I had envisioned it so much better...

Also thanks for the various tips on dealing with the raggy trim edges.  I have known of the credit-card-smoothing technique (although I will check out the nylon razor blade thingys), but really had never thought of outlining the trim with permanent marker to cover up those edges.  That might be just the thing it needs.  I don't suppose permanent pen markers are fuelproof, but a light shot of clear would take care of that. I may not be through with it yet!  Also the plastic eraser approach--I have a plane or two with a little overspray I can try that out on.  Always learning from this forum!!

By the way, concerning the positive angle of the rotor:  That is per Mr. Musciano's plan & design.  I know nothing about the aerodynamic theory behind it.  I can't quite picture how a freewheeling rotor at a negative AOA could produce positive lift (seems like it would be a perpetual-motion machine) but then there are many such things that escape me.  I suspect on this particular model the rotor is more for visual effect than anything else; the design has enough stationary wing to fly on.

And lastly, I agree: Frank's model is a knockout! Even if he is using it to brownnose Larry...

--Ray

--Ray

Yeah Ray, it took a couple days to realize there wasn't a little guy in the cockpit. I think I was distracted by all that whining and carrying on you were doing about the louzy finish. You had me psyched out. I was looking everywhere but where the little fella was supposed to be.

Try a Sharpie fine point and you'll need a steady hand to get the lines on there good. A few very lite coats of clear will fuel proof it. And speaking of fuel proof I think fingernail polish is fuel proof.

Me too on the thanks guys thing. All the times the other guys chimed in really kept me motivated and focused on doing a good job. THANKS EVERY BODY...................................

And Ray about brown nosing Larry.........I tried but it didn't work. He still wants me to pay for stuff from him..Dang! SH^
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on February 01, 2007, 04:22:13 AM
Ray---I was just thunderstruck by a bolt of insight!!

Take your auto-gyro and hold it in front of a fan. Observe which way the rotor rotates. Robert McHam may have had a point when he said the rotor needed to be installed to give negative lift.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on February 01, 2007, 08:06:26 AM
"Thunderstruck by a bolt..." Hope it didn't hurt too much. 

Direction of rotation in front of a fan depends entirely on which way we pitched the blades; and I don't think it really matters as long as they're all the same!  And holding it at negative AOA will make the blades rotate in the opposite direction, which still doesn't prove anything I don't think. (Bad English but good Logic?)  Anyhow, we followed the design intent and plans in setting the positive angle of the rotor; in the absence of any independent knowledge at all of autogyro theory, that's all I can do or intend to do. 

All that may sound harsher than I mean it to, but all I want to do now is go fly the thing and watch the rotor go 'round and 'round...

Still awaiting my Fierce Arrow plans.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on February 01, 2007, 08:16:20 AM
Putting the gyro in front of a fan will get the rotor going. I just sent you a short video of mine spinning. Now that I see how it's going to go I'm confused.
I'm going to see if Sparky can imbed this video on our thread.
Title: Re: BHM 1/2A auto gyro
Post by: Robert McHam on February 01, 2007, 04:33:09 PM
I was young and knew little when I read that article on the model gyro but I did know the basics of airfoils and Positive AOA with wings and even helicopter rotors. I myself shot an auto-rotation landing in a Coast guard Sikorsky H-3 simulator. I was schooled prior to this of course.  The engines both were on fire and I had to first shut of fuel, hit the extinguisher buttons, put the rotor collective pitch in negative  to conserve rotor energy and RPMs. Cyclic pitch guided the steep flight path to the ground and at 500 ft altitude pulled hard on the collective pitch to flare for the landing. I did the exercise perfectly with only a moment or two being warned about coming in too steep. I was able to correct that in easy order. Ok, that made it less than perfect but I think I did pretty well!  A very memorable experience and lesson.

I have been trying to find more info and as yet have not come up with anything new to report as yet. Not done looking either.

It is my understanding that the neg. pitch creates the necessary spinning and that the rotors act more like a kite in that with the high AOA of the rotor assembly creates more actual lift than the airfoil of the individual rotors. This may account for the Blackhawk Models gyro to  in fact spin backward and yet still create the lift needed for successful flying.

Obviously this is not the end  of all this!     
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on February 01, 2007, 06:39:26 PM
I'll be looking forward to further discussion on this Robert. I was surprised when I put it in front of the fan and it rotated in a direction that appeared to cause negative lift.
Title: Re: BHM 1/2A auto gyro
Post by: bob branch on February 01, 2007, 06:44:22 PM
The angle of attack of a helecopter is different than the blackhawk gyro because it has active collective control. The blades are constantly changing pitch and the motive vector of force must be forward for the helecopter to go forward faster. Your gyro has fixed blade pitch and to get lift the angle of attack must be positive. Direction of rotor rotation is irrelevant. Any torque force is not along the blade axis but along the axis of rotation.

Don't worry. Walt wouldn't steer you wrong. Go fly the things.... Gee Frank, Sunday might be just your kind of day! Zero and windy!

bob
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on February 01, 2007, 06:48:31 PM
but how/why does this create lift? i don't get it. ???
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on February 01, 2007, 08:30:55 PM
Deflection, Frank, deflection...just like a flat-plate wing.  Picture a disc the diameter of your rotor; that's MOL what we have I think.  That's why it must sit at a positive AOA--or else the plane would have to fly tail-down to achieve the deflection it needs.  Well, I think so anyway...

I second Bob Branch--we shouldn't analyze 'em so much; we should just go fly 'em.  Who'll be the first to nurse one through a loop?

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on February 01, 2007, 08:38:17 PM
Deflection, Frank, deflection...just like a flat-plate wing.  Picture a disc the diameter of your rotor; that's MOL what we have I think.  That's why it must sit at a positive AOA--or else the plane would have to fly tail-down to achieve the deflection it needs.  Well, I think so anyway...

I second Bob Branch--we shouldn't analyze 'em so much; we should just go fly 'em.  Who'll be the first to nurse one through a loop?

--Ray

Well if it doesn't matter about the neg. pitch then I say this puppy will fly inverted because the rotor disc doesn't care if it's right side up or not.
You'll probably do the first loop. But I think my loop will be the one we see on our monitors first.

Title: Re: BHM 1/2A auto gyro
Post by: Robert McHam on February 01, 2007, 09:35:44 PM
Quote by Bob Branch:
"Deflection, Frank, deflection...just like a flat-plate wing.  Picture a disc the diameter of your rotor; that's MOL what we have I think.  That's why it must sit at a positive AOA--or else the plane would have to fly tail-down to achieve the deflection it needs.  Well, I think so anyway..."

This was my intention when I mentioned the kite in my last post. I am not convinced myself that this model (nor autogyros in general) should have neg. rotor pitch. I wish I could quote that article I once read...
Seems most of the autogyros I have run into appear to have positive pitch. Note I said appear. I am still trying to find the written theory to support this one way of another. 

Heh! You guys have fun! I am doing this more for me than to try to throw a monkey wrench into the works. 

It could be that the article that so impressed me was emphasizing the neg. AOA simply because it went against all the rules...
Also I was hoping you fellas already knew the answer!!!

Robert
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on February 01, 2007, 09:58:08 PM
Robert said--I was hoping you fellas already knew the answers.

No such luck Robert! However I did set my auto gyro in front of a fan today. I observed that no matter how you pitch the blades the rotor will appear to be producing negative lift. I think this is so because we have a preconcieved notion of what a prop does and when we apply that notion to an auto gyro rotor we hit a wall. Props and auto gyro rotors do different jobs.
As I fly my gyro I'll probably come to the same conclusions and explanation as that article you read Robert. For now I'm thinking the rotor is like a frisbie--as long as it has momentum and spin it creates lift.

Also based on the size relationship between the wing and the rotor on this model I'm willing to bet it will fly inverted. #^
Title: Re: BHM 1/2A auto gyro
Post by: Robert McHam on February 02, 2007, 12:08:11 AM
Since I have yet to find anything substantial in writing I have taken to looking as closely as I can to the pics of full size and model gyros including a gyro kite that seems to be everywhere. The AOA seems to be rather flat and thus hard to tell whether a pos. or neg. pitch. This in itself may be an important clue. If indeed th AOA should be positive, it may actually need only to be slight.
I cannot seem to stop my search yet and even while writing this, look what I found:
http://www.autogyro-rc.com/
This my friends has a link to a video of a Kellet doing some great flying and a decent explination of how auto-giros (that is how they spelled it) fly. Using models and a real aircraft!
In this video you should see what I have been running into as far as the AOA on the rotorblades. It looks like it has none at all. Very flat. It looked to me like a semisymetrical foil but upside down? I could swear it had more camber on bottom than top! Judge for yourselves!

Clic on "How They Fly" just under the first image.

Robert   
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on February 02, 2007, 02:33:49 AM
Robert, if you keep this up you're going to be our resident "GIRO GURU". I just clicked on that link and was thoroughly entertained!! I still don't know why the auto giro works (please note I have swapped the y for an i) but it sure looks like fun.
Those planes were sure colorful.
Keep up the good work Robert.....We want more!! y1
Title: Re: BHM 1/2A auto gyro
Post by: Richard Grogan on February 02, 2007, 11:10:54 AM
Since I have yet to find anything substantial in writing I have taken to looking as closely as I can to the pics of full size and model gyros including a gyro kite that seems to be everywhere. The AOA seems to be rather flat and thus hard to tell whether a pos. or neg. pitch. This in itself may be an important clue. If indeed th AOA should be positive, it may actually need only to be slight.
I cannot seem to stop my search yet and even while writing this, look what I found:
http://www.autogyro-rc.com/
This my friends has a link to a video of a Kellet doing some great flying and a decent explination of how auto-giros (that is how they spelled it) fly. Using models and a real aircraft!
In this video you should see what I have been running into as far as the AOA on the rotorblades. It looks like it has none at all. Very flat. It looked to me like a semisymetrical foil but upside down? I could swear it had more camber on bottom than top! Judge for yourselves!

Clic on "How They Fly" just under the first image.

Robert   

That is extremely cool Robert! Thanks for sharing that with us!
Title: Re: BHM 1/2A auto gyro
Post by: Robert McHam on February 02, 2007, 03:58:32 PM
I only wish the video were a little higher quality but you can hardly beat it for relavance and also being the "real deal".

I do also wish it were in color as well. Anyone pay attention to the magnificent paint job the full size had? I wonder what colors were used?

Robert
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on February 02, 2007, 04:05:09 PM
OK fellas, I took the advice of...someone...can't remember, too lazy to go back through the posts to find it; to use a sharpie permanent marker to cover the raggy ("lettuce"?)edges of the trim on my plane.  Below are the results.  I think it looks better than it did, although still not great...I wasn't as painstaking as I could have been, just sort of experimenting around.. but, seems to me it works as advertised, cleaned up those sloppy edges pretty well. 

Now I'm setting the little booger aside 'til Spring, in anticipation of--the Next Project.  Thanks to all for the help and suggestions.

--Ray

Title: Re: BHM 1/2A auto gyro
Post by: Bill Little on February 02, 2007, 04:13:31 PM
Hey, Ray,  it looks real sharp now!  Even better with the pinstriping. y1 ;D
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on February 02, 2007, 04:22:26 PM
Thanks...still waiting on more pics of your Snapper!
Title: Re: BHM 1/2A auto gyro
Post by: Bill Little on February 02, 2007, 04:29:58 PM
Thanks...still waiting on more pics of your Snapper!

Undergoing it's "bath" in clear Nitrate right now in preparation for the "tissue job".  All the little "going over it 40-11 times" to see if something needs fixing since there will not be any color paint on it!
Title: Re: BHM 1/2A auto gyro
Post by: Richard Grogan on February 02, 2007, 05:31:49 PM
OK fellas, I took the advice of...someone...can't remember, too lazy to go back through the posts to find it; to use a sharpie permanent marker to cover the raggy ("lettuce"?)edges of the trim on my plane.  Below are the results.  I think it looks better than it did, although still not great...I wasn't as painstaking as I could have been, just sort of experimenting around.. but, seems to me it works as advertised, cleaned up those sloppy edges pretty well. 

Now I'm setting the little booger aside 'til Spring, in anticipation of--the Next Project.  Thanks to all for the help and suggestions.

--Ray


I thought it would help...your welcome,Ray! :-X
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on February 02, 2007, 05:48:45 PM
OK fellas, I took the advice of...someone...can't remember, too lazy to go back through the posts to find it; to use a sharpie permanent marker to cover the raggy ("lettuce"?)edges of the trim on my plane.  Below are the results.  I think it looks better than it did, although still not great...I wasn't as painstaking as I could have been, just sort of experimenting around.. but, seems to me it works as advertised, cleaned up those sloppy edges pretty well. 

Now I'm setting the little booger aside 'til Spring, in anticipation of--the Next Project.  Thanks to all for the help and suggestions.

--Ray

Well Well Well---------that Sharpie sure made this little ship a sharpie!!  (PE**) DV^^ CLP** BW@ HH%%

You have got to be feeling much better about your plane now Ray. It's a completely different bird. I like it!!




Title: Re: BHM 1/2A auto gyro
Post by: bob branch on February 02, 2007, 07:04:16 PM
Maybe this video of a gyrocopter flying will help alay your fears. Note the positive angle of attack of the rotor.

http://www.gyropilot.co.uk/ken_clip.asp

Bob
Title: Re: BHM 1/2A auto gyro
Post by: bob branch on February 02, 2007, 07:06:55 PM
http://www.gyropilot.co.uk/

This will give you the video above and several others. All with positive angle of attack.

Bob
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on February 02, 2007, 09:27:50 PM
http://www.gyropilot.co.uk/

This will give you the video above and several others. All with positive angle of attack.

Bob




Excellent links Bob. I entertained myself for about an hour looking at the pictures. It's amazing how many different ways there are to make an auto gyro. So many configurations and sizes. I'm beginning to think that the BHM gyro I built is only the beginning of my involvement with them.
I find it very interesting that this airplane has such strong appeal that the thread is continuing to stay alive even after the models have been built.
I think after my initial test flights with mine I may want to increase the length of the rotors. And will probably need to build a larger version with throttle. The Kellett gyro with it's wing lends itself perfectly to CL.
Please post any additional info you find. Robert you do the same please.

Ray check out the picture of the giro. Looks like something we'd see from the Minnesota Modeler.


Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on February 02, 2007, 09:42:58 PM
Wow...now that's what you call a...well, I don't know what you call it. 

The one in the photo looks to me like a Burt Rutan design, of Composite whatever.  You know, of SpaceShipOne fame?

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on February 02, 2007, 09:55:20 PM
That's what I was thinking about Ray. That particular kit is still sitting in the to be done bin here at my house.
Title: Re: BHM 1/2A auto gyro
Post by: Robert McHam on February 03, 2007, 11:23:47 AM
Thanks Frank.

Well friends and neighbors, positive incedence seems to be more and more the order of the day, yet I have not seen it in writing yet... The flapping hinge seems to be more and more important.

I found another spectacular video that has footage of a number of gyros including one the Detroit News!

Here: http://www.youtube.com/watch?v=Y4MwxHCzGbY

Robert
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on February 03, 2007, 01:21:51 PM
Thanks Frank.

Well friends and neighbors, positive incedence seems to be more and more the order of the day, yet I have not seen it in writing yet... The flapping hinge seems to be more and more important.



Robert

What is a "flapping hinge"?  Have I missed something?

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on February 03, 2007, 01:49:49 PM
http://www.youtube.com/watch?v=Y4MwxHCzGbY

click on this link and it shall be revealed Ray.
Title: Re: BHM 1/2A auto gyro
Post by: Robert McHam on February 03, 2007, 02:27:48 PM
Ray, I didn't know till a few days ago.

Some of you may already know some or all of what I will say here, if so please bear with me.

A rotor craft gains its lift by means of the rotating blades. This acts like a wing to some degree.
One of the biggest differences is because each rotor is moving,
sometimes in the same direction as the direction of flight of the craft, sometimes the opposite way as the direction of flight and twice with the wind cross ways. All of this in one single revolution.
Blade behavior, will differ in each quarter of a revolution because of this. In this behavior  there is a lag time of 90 degrees.
Imagine an analog clock face on the floor .  12 O 'clock is forward motion. Or if you will the nose of our aircraft. Imagine also if you will airflow going from twelve o'clock to six o'clock.
Imagine also that the rotors are turning counter clockwise.
This will mean that the rotor at the position of 3 o'clock will have the fastest airflow over it thus creating the most lift. Just as the outboard wing panel in a control line plane has just a tad more lift than the inboard panel.

Add to this the 90 degree rule of rotor craft wherin the effect of this will be nose pitch up.
At the same time my friends, on the same aircraft but heading the other way and at the same speed of the opposite rotor blade advancing, but with a difference. It has a tail wind if you will, equal to the headwind on the advancing blade.
this takes away some of the lift of this blade.
Add to this the 90 degree rule of rotor craft wherin the effect of this will be tail moment pitch drop.
Remember that both these forces are acting at the same time.

To clarify, when flying forward, the advancing blade at 3 O'clock will cause pitch up at the 12 0'clock  position and at the same time the rotor blade at 9 O.clock will be having less lift allowing the tail to drop at the 6 O'clock position.

What the flapping hinge does, is that it allows that rotor blade having the most lift to rise upwards out of rotational line of the other blades and thus have less effect on the whole.

Whew! I feel like I am back at school! Robert

Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on February 03, 2007, 04:46:19 PM
Robert, that was good!! You sounded like you knew what you were talking about. And very well thought out. You are making a good contribution to this subject.
I wonder if we hinged our rotor blades if it would help or make no difference at all.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on February 03, 2007, 04:51:42 PM
Not applicable, however, to our models wherein the rotors are hard-fixed to the hub.  Right?  And, it would seem that 0-degree incidence of the rotor should still produce lift?  But perhaps not enough, so the positive rotor angle adds the rest.  Maybe.  (Do I get an "A"?  Do I? Do I?)  "You will be tested..."

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on February 03, 2007, 04:54:58 PM
Seems like if the rotor blades were hinged, they would also have to be spring-loaded so they wouldn't just fold up overhead in the slipstream.  Hmmmmm...

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: Bill Little on February 03, 2007, 05:35:30 PM
I noticed on the old British film that the rotors were hinged, but there were wires, under tension, hooked to the hub and rotors.  (??)
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on February 03, 2007, 09:33:45 PM
A simple pin at the rotor root would let it drift up and back down. The extra discs we made for our rotors could be made to act as stops.

I think that a larger and throttled auto gyro would lend itself better to experimentation.
Title: Re: BHM 1/2A auto gyro
Post by: Bill Little on February 03, 2007, 09:39:48 PM
Yes, a 40 size with a three line hook up would give you an excellent test bed.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on February 03, 2007, 09:43:50 PM
Art Adimisin has one that size I'll check with him about plans and such.
With my current projects and the ones coming up, I think I may need to hire help.
Title: Re: BHM 1/2A auto gyro
Post by: Robert McHam on February 03, 2007, 11:15:49 PM
Quote by frank carlisle:
" Robert, that was good!! You sounded like you knew what you were talking about."

Thanks Frank! In this case I actually do and I put it in my own words using examples as I saw them. I was hoping to paint the pictures for you in a way I have not seen tried. I also realise that this knowledge and explanation makes me   appear far morfe intelligent than I really am... While I do understand this simple theory (to me it is simple because I actually understand what Is happening.) I still do not get ( the probably just as simple theory) how the forces acting on the darned rotor  get it to spin in the proper direction thus making every thing else work!!! This of course is part of the poitive-negative angle of incidence regarding the rotor blades.
This of course is why I am doing all this research in the first place.

I am glad to be getting something out of all this so far (I actually like learning, its all this studying that is no fun!) and I am glad others are  benifitting from my studies.

Quote by frank carlisle:
"I wonder if we hinged our rotor blades if it would help or make no difference at all."

I believe you would but that does not mean that the design of this model will not fly as designed. It is my theory that flight would experience improved charactaristics but I am not convinced that this improvement would make the difference between flight and non flight.

Quote by Ray:
"Not applicable, however, to our models wherein the rotors are hard-fixed to the hub.  Right?"

Actually Ray, this applies to all rotorcraft both powered and unpowered. So I have to take off a point here. Howerer, it does seem that the smaller the model the smaller the effect has...  there are many nodels that do not have such hinges. They do fly and from what I have seen fairly well.

Quote by Ray:
" And, it would seem that 0-degree incidence of the rotor should still produce lift?  But perhaps not enough, so the positive rotor angle adds the rest.  Maybe.  (Do I get an "A"?  Do I? Do I?)  "You will be tested..."

Yes Ray! Exactly!

Quote by Frank:
" A simple pin at the rotor root would let it drift up and back down. The extra discs we made for our rotors could be made to act as stops.

I think that a larger and throttled auto gyro would lend itself better to experimentation."

Yes, and yes,  Frank! True! 

Robert
Title: Re: BHM 1/2A auto gyro
Post by: Robert McHam on February 03, 2007, 11:55:14 PM
 :! Ok Folks! Epiphony time! I get it!

Take a strip of balsa and hold it level (somewhere in the middle) and drop it. It should fall end over end. But not long-ways. Always it will fall away from you flipping end over end. Forward motion! It will never fall straight down so long as the air around is still! Most of us have seen this before at some point in time. You can do it with a piece of paper. cut a piece of paper about 8 inches by about half to three quarters of an inch wide.

The difference is that we have a stabilizing force to keep the tumbling from happening! The rotor hub provides this stabilizing force. The same way a glider will not fall straight down if you simply dropped it. The tail feathers (stabilizer and verticle fin) provide the same stabilzing effect.

The positive pressure of the air from underneath combined with the stability!

Now I feel enlghtend!    There is a little more to this. If you want I will explain. If you guys get it then there is no need.

Robert
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on February 04, 2007, 07:34:04 AM
Tell us more Robert. Graphs and pictures will be a great help.
I tried the balsa strip. Sure enough it twisted it's way to the floor just like you said it would.
Title: Re: BHM 1/2A auto gyro
Post by: Robert McHam on February 04, 2007, 01:14:19 PM
Sure thing Frank!

Ok, you see how the balsa spins its way down. This is from gravity. however it does not fall straight down as a block or ball of balsa would. It has forward motion as well. This is because there is lift being created.
The reason it still tumbles is because there are no stabilizing forces. In the case of the rotor blade part of the stabilizing force is from the mounting of the rotor at one of its ends to the hub. This along with the rigidity of the blade and centrifigal force keeps the blade from doing its flips in the air.

Mounting the blade ( in this case a wing)  on a fuselage and adding a stabilizer and verticle fin also keep it from flipping over and over.

So take your piece of balsa and use it for a wing and make a small glider. add an appropriate little stick for the fuse and some really thin stabilizer and fin or rudder and some clay or paper clip or whatever to give it some proper balance and drop it. it will go forward yet not tumble! Unless you drop it in a tail downward manner. then gravity will do its worse unless there is enough height for the thing to stabilise properly as it should.

Robert
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on February 04, 2007, 02:41:52 PM
Guys---------right on paage one of this thread. First post there is a short video of my auto gyro sitting in front of a fan with the rotor spinning!! Sparky was kind enough to put it there. Now ya'll go look, hear?

Thankyou Sparky.
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on March 05, 2007, 04:27:48 PM
Finally landed a pilot for my Autogyro. 
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on March 05, 2007, 05:18:13 PM
Snoopy huh? He's cute in there Ray. And here I thought we were all done with the GYRO!!
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on March 05, 2007, 07:49:31 PM
He even fits the color scheme.

No plane is ever really finished, Frank, you oughtta know that...
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on March 05, 2007, 08:30:42 PM
Not only does Snoopy match the color scheme he also really helps hi-lite that windscreen. Is the red on the screen nail polish?

You are so right ---no model is ever finished-at some point we just quit working on them. y1


Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on March 06, 2007, 07:41:57 AM
Yup, red nail polish, liberated from my wife's dresser drawer...I put it back, don't tell her.  Hope it's fuel proof.

--Ray
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on March 06, 2007, 08:14:21 AM
I thought so. Have you ever used her nail glue?
Title: Re: BHM 1/2A auto gyro
Post by: bob branch on June 21, 2007, 09:20:50 PM
Ok, I can't stand it any more :P. Has anyone flown it yet? Report Please!

Bob
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on June 21, 2007, 10:24:09 PM
Read "Autogiro flight report" post in this (1/2 building) area.
Larry
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on July 21, 2007, 10:13:09 PM
I flew my auto-gyro at the Kalamazoo Musciano contest today. The darn rotor wouldn't spin but I can get that to work easily enough. It did however give me 3 very fun and stable flights as well as a first place craftsmanship award plaque signed by Walter hisself.

Boy I had a good time! This 1/2A stuff is fun.
I have a short 9 mb video I'll rmail to anyone that wants to view it and whose computer can digest 9 mb.
Title: Re: BHM 1/2A auto gyro
Post by: Clancy Arnold on July 22, 2007, 06:02:20 AM
Congratulations Frank!!!

How was the line tension compaired to your LA Heat?

Clancy
Title: Re: BHM 1/2A auto gyro
Post by: minnesotamodeler on July 22, 2007, 06:06:11 AM
How come your rotor wouldn't spin?  That's kinda the whole idea of these things I thought...mine turns, probably 200 rpm or so using a mild .049 and kinda slow airspeed.  Probably slower with the rotor spinning than not. But it looks cuter. Loosen up that rotor!

--Ray

P.S. Congrats on the craftmanship award, that's certainly deserved.  You oughtta get one for every plane you build just as fallout from the Heat.
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on July 22, 2007, 06:23:15 AM
Clancy,
The line tension was a little lighter on the auto-gyro than on the Heat. hmmmmm............. LL~

Ray--the rotation of the rotor kept tightening up the screw. I really wanted to see that rotor spinning man. I tried 3 flights and each time the rotor would spin for the first half lap then the screw got to tight. This week I'm going to make a new spindle that won't bind.

Rich had a Golden Hawk that was way better finished than my gyro and technically he should have won the craftsman plaque. I flew his Hawk in stunt and came in 3rd. The plane did a wingover, inside loops and lazy eights. If I hadn't run out of sky on the outside loop and had I gotten landing points we would have come in first.

Greg Bossio flew my BlackHawk Models PT-19 to third place in the Racing Event. Greg is holding the PT-19 wearing his stunt hangar t-shirt in the background of the photo and in the foreground is Rich swapping the engine from his Atomic to the Golden Hawk for our fling at stunt.
Title: Re: BHM 1/2A auto gyro
Post by: LARRY RICE on July 22, 2007, 07:36:02 AM
          It sounds like you guys had some great fun! How many showed up? I wish that I could have been there this year too. The smiling faces of the little kids......oh....that is Rich!  :## It would be great if the winners of all of the Musciano contest could meet and have a run off event. The Musciano Nationals!!!
          CONGRADULATIONS on your wins!!!!
Captain Blackhawk
Title: Re: BHM 1/2A auto gyro
Post by: frank carlisle on July 22, 2007, 07:58:27 AM
Thanks Larry, Here is a group picture. Your product line was well represented.
hmmmmm....a Musciano Nationals.
Title: Re: BHM 1/2A auto gyro
Post by: Paul Smith on July 22, 2007, 08:37:58 AM
Too bad they took the picture after  the awards.

If they took it the middle of the contest, they would have gotten two or three times more people, and five times more models.
Title: Re: BHM 1/2A auto gyro
Post by: Leroy Heikes on July 30, 2007, 12:54:22 PM
I agree with you Paul. Next year we will have the picture taken at Lunch time.

Leroy