Author Topic: My MC 72 (Read 19258 times)

Howard Rush · « **Reply #100 on:** November 14, 2013, 01:26:05 AM »

Quote from: Douglas Ames on November 13, 2013, 10:37:15 PM

Your chart is interesting but trimming wings level with a buddie/spotter outside the circle is a quicker solution.

Yep. Just put a wad of ballast on the right tip and take it off until it flies right. The two-line-reel method isn't even correct and is more bother than just guessing, and guessing on the generous side is safe.

RC Storick · « **Reply #101 on:** November 14, 2013, 08:34:59 AM »

Quote from: Howard Rush on November 14, 2013, 01:26:05 AM

Just put a wad of ballast

Sounds right

RandySmith · « **Reply #102 on:** November 14, 2013, 08:49:49 AM »

Quote from: Howard Rush on November 14, 2013, 01:26:05 AM

Yep. Just put a wad of ballast on the right tip and take it off until it flies right. The two-line-reel method isn't even correct and is more bother than just guessing, and guessing on the generous side is safe.

What constituents a wad ?

Randy

RC Storick · « **Reply #103 on:** November 14, 2013, 08:52:49 AM »

Quote from: RandySmith on November 14, 2013, 08:49:49 AM

What constituents a wad ?

Randy

That would be the same amount he has in the nose.

Avaiojet · « **Reply #104 on:** November 14, 2013, 08:57:58 AM »

Different hinges on the elevator than flaps?

Nice lines, looks good!

Charles

RC Storick · « **Reply #105 on:** November 14, 2013, 09:18:02 AM »

I was going to try pin hinges but I will be going to all kleet.

Avaiojet · « **Reply #106 on:** November 14, 2013, 10:08:47 AM »

Quote from: Robert Storick on November 14, 2013, 09:18:02 AM

I was going to try pin hinges but I will be going to all kleet.

OK, but you have what looks like Robart hinges on the elevator?

Will you remake the elevator?

Charles

RC Storick · « **Reply #107 on:** November 14, 2013, 10:28:05 AM »

Quote from: Avaiojet on November 14, 2013, 10:08:47 AM

OK, but you have what looks like Robart hinges on the elevator?

Will you remake the elevator?

Charles

I do and I will not remake the ele. I will just fix it.

Howard Rush · « **Reply #108 on:** November 14, 2013, 11:58:37 AM »

Quote from: Robert Storick on November 14, 2013, 08:52:49 AM

That would be the same amount he has in the nose.

Oh, no. That's way too much.

RC Storick · « **Reply #109 on:** November 16, 2013, 05:09:43 PM »

Here is where I am at today. Started on October 21, 2013

So in 26 days I am close to getting it on it's wheels. Work has slowed things down. All control surfaces are attached. Wing glued ad stab tacked on. This one will be covered with 00 silkspan. I hope to save a little weight there.

RC Storick · « **Reply #110 on:** November 18, 2013, 05:18:08 PM »

Less than 30 days and its on it's legs. I still need to make some pontoons but hey!

RC Storick · « **Reply #111 on:** November 18, 2013, 05:23:54 PM »

Hatch shot

RC Storick · « **Reply #112 on:** November 18, 2013, 05:50:05 PM »

Shape for the pontoons

MarcusCordeiro · « **Reply #113 on:** November 18, 2013, 06:10:53 PM »

Looking good boss!

Marcus

RC Storick · « **Reply #114 on:** November 18, 2013, 06:27:26 PM »

resand

wwwarbird · « **Reply #115 on:** November 18, 2013, 06:42:33 PM »

The pointy nose "pontoons" look too modern for the rest of the MC design Sparky, better round those fronts off aka Gee Bee...

Lookin' great otherwise though!

RC Storick · « **Reply #116 on:** November 18, 2013, 09:07:47 PM »

Quote from: wwwarbird on November 18, 2013, 06:42:33 PM

The pointy nose "pontoons" look too modern for the rest of the MC design Sparky, better round those fronts off aka Gee Bee...

Lookin' great otherwise though!

Look at these

Dan McEntee · « **Reply #117 on:** November 18, 2013, 10:30:55 PM »

Well like Forrest Gump said, since you've gone this far, might as well go a little farther make them look like floats, and include the little step on the bottom that helps the potoon break the surface tension of the water. Just a little zig zag up behind the wheel well. It may be a little cartoonish looking, but painted properly to match everything else, I think it will look OK. I'm sure you'll be making them removable and can always take them off or build different ones.
Type at you later,
Dan McEntee

wwwarbird · « **Reply #118 on:** November 19, 2013, 12:25:30 AM »

Quote from: Robert Storick on November 18, 2013, 09:07:47 PM

Look at these

Ha! I figured that was coming.

If you scale down the red white and gold patterns shown on the pontoons and then paint up your pants to match it would look pretty cool.

Douglas Ames · « **Reply #119 on:** November 19, 2013, 05:45:17 PM »

Looks great!
How are you going to do the faux exhaust?
Lots of ports on this bird.

RC Storick · « **Reply #120 on:** November 21, 2013, 12:45:23 PM »

Progress pics

RC Storick · « **Reply #121 on:** November 21, 2013, 12:45:45 PM »

progress pics

RC Storick · « **Reply #122 on:** November 21, 2013, 12:46:30 PM »

progress pics

RC Storick · « **Reply #123 on:** November 21, 2013, 12:47:29 PM »

progress pics.

Ass seen in these shots it weighs 46.5 ounces with everything except covering and paint. So even a 8 ounce finish would leave me at 54 or 55. I am hoping to do the finish in 6-7 ounces for a even lighter airplane. See that a battery compartment can be organized .

Today this plane is 30 days old. The original idea is a week before, so not to bad for 30 days work. The biggest design factor for this plane is battery placement. We shall see how things go but I am betting this will bring these big airplanes more into the realm of what I like.

MarcusCordeiro · « **Reply #124 on:** November 21, 2013, 12:54:33 PM »

Neat!!!

Marcus

wwwarbird · « **Reply #125 on:** November 21, 2013, 01:41:30 PM »

Looking great!

Mark Scarborough · « **Reply #126 on:** November 21, 2013, 02:19:54 PM »

Looks good,,

how is it looking for balance/CG with the battery that far back

RC Storick · « **Reply #127 on:** November 21, 2013, 03:04:34 PM »

it will be nose heavy

Dan Bregar · « **Reply #128 on:** November 21, 2013, 04:34:10 PM »

Very, very nice Robert. Really like the vertical batt. placement.

wwwarbird · « **Reply #129 on:** November 21, 2013, 08:47:43 PM »

Quote from: Robert Storick on November 21, 2013, 03:04:34 PM

it will be nose heavy

Don't fret Sparky, you could always bore the rear half of the plane full of holes. Doh!

RC Storick · « **Reply #130 on:** November 22, 2013, 12:25:03 AM »

I thought I would do something special for the LG. So I attached balsa to the CF gear and sanded it into a airfoil. A special airplane deserves special treatment.

john e. holliday · « **Reply #131 on:** November 22, 2013, 08:12:29 AM »

Quote from: wwwarbird on November 21, 2013, 08:47:43 PM

Don't fret Sparky, you could always bore the rear half of the plane full of holes. Doh!

Rethink, bore more holes on the tail of a nose heavy plane!!!

Bob Hunt · « **Reply #132 on:** November 22, 2013, 04:01:06 PM »

Just outstanding Robert! Really, outstanding!

Bob Hunt

Avaiojet · « **Reply #133 on:** November 22, 2013, 04:53:29 PM »

Yes, Outstanding!

What are those "areas" on the float struts, cowling and the floats?

Charles

Trostle · « **Reply #134 on:** November 22, 2013, 05:08:12 PM »

Quote from: Avaiojet on November 22, 2013, 04:53:29 PM

Yes, Outstanding!

What are those "areas" on the float struts, cowling and the floats?

Charles

Maybe it is some form of a new generation X-onobtainium that has negative mass.

Dennis Adamisin · « **Reply #135 on:** November 22, 2013, 07:15:45 PM »

Looking fair to partly OUTSTANDING!!!

Sparky, where did you get the blue bracket thats holding the battery plug - I have been looking for something like that.

wwwarbird · « **Reply #136 on:** November 22, 2013, 07:53:46 PM »

Quote from: john e. holliday on November 22, 2013, 08:12:29 AM

Rethink, bore more holes on the tail of a nose heavy plane!!!

You got me again Doc, I was thinking backwards there!

Lookin' great Sparky, and with a pilot?

Howard Rush · « **Reply #137 on:** November 22, 2013, 10:25:33 PM »

Quote from: Dennis Adamisin on November 22, 2013, 07:15:45 PM

Sparky, where did you get the blue bracket thats holding the battery plug - I have been looking for something like that.

http://www.spotonrc.com/category.php?id=40 Local guy.

RC Storick · « **Reply #138 on:** November 22, 2013, 11:16:38 PM »

Quote from: Howard Rush on November 22, 2013, 10:25:33 PM

http://www.spotonrc.com/category.php?id=40 Local guy.

17.00 there or 4.88 here https://www.hobbyking.com/hobbyking/store/__40718__Anodised_Alloy_External_Flight_Battery_Arming_Switch_T_Plug_.html

PerttiMe · « **Reply #139 on:** November 23, 2013, 02:01:07 AM »

Quote from: Dan McEntee on November 18, 2013, 10:30:55 PM

Well like Forrest Gump said, since you've gone this far, might as well go a little farther make them look like floats,

As it is not going to be a seaplane anyway, better make it look like a landplane version of the MC 72, instead of a fake seaplane.

RandySmith · « **Reply #140 on:** November 23, 2013, 11:33:06 AM »

Its lookin good Sparky !!
ya know that plane was a twin engine... so you could try 2 E-Flite 15s :-)

Randy

RC Storick · « **Reply #141 on:** November 23, 2013, 11:45:27 AM »

AXI makes a counter rotating motor however its too heavy. I did research it.

Dan McEntee · « **Reply #142 on:** November 23, 2013, 03:53:33 PM »

Quote from: Robert Storick on November 23, 2013, 11:45:27 AM

AXI makes a counter rotating motor however its too heavy. I did research it.

You ain't got one hair on your a#@ if you don't at least TRY to incorporate the ability to swap out a conventional motor set up for the counter rotating deal and experiment.

LL~How much heavier is it? Think of the possibilities? Griffon powered Spitfire, Red Baron air racer, Precious Metal air racer. Let Paul Walker know and he can do a Shackleton Bomber Stunter!!!!!I have always wanted to do a twin and/or a counter rotating type stunter, especially after seeing Randy's C/R model at the NATS in the early 90's. Just haven't had the time to devote to it. I do have a kit of Sheek's Mosquito downstairs, and if I can ever find a left hand crank for an OS .25LA, FP.25, or OS .35S I'll start building the day after I get the crank!
Type at you later,
Dan McEntee

RC Storick · « **Reply #143 on:** November 23, 2013, 04:01:53 PM »

The motor in the picture weighs 54 ounces. That's the smallest CR motor they have.

Jason Greer · « **Reply #144 on:** November 23, 2013, 10:36:05 PM »

http://www.maxxprod.com/mpi/mpi-266.html

Here are few more options. They have a 6 oz and 10 oz setup.

RC Storick · « **Reply #145 on:** November 23, 2013, 10:55:28 PM »

Well its a nice thought but having to use 2 esc and the weights involved make it out of the question. To work this plane must come in the mid fiftys.

David Hoover · « **Reply #146 on:** November 24, 2013, 07:18:54 AM »

But would be fabulous in scale versions of any of the planes Dan mentioned

RC Storick · « **Reply #147 on:** November 25, 2013, 09:58:30 AM »

This is the last post on building in this section. I am taking everything apart today and it will get weighed. I will start the final stage of finishing. However as my tag line says the finish starts with the first piece of wood cut. The better you build your airframe from the start the better the finish product will be. So take your time make everything fit and sand everything symmetrical. Look for this saga to continue in the finishing section starting today.

Tom Niebuhr · « **Reply #148 on:** November 25, 2013, 10:13:59 AM »

Sparky,
Looking forward to the finishing.

Meanwhile I would like see the bottom of the aircraft. Air exits or any baffling to direct cooling air over the electronics.

RC Storick · « **Reply #149 on:** November 25, 2013, 10:29:05 AM »

Quote from: Tom Niebuhr on November 25, 2013, 10:13:59 AM

Sparky,
Looking forward to the finishing.

Meanwhile I would like see the bottom of the aircraft. Air exits or any baffling to direct cooling air over the electronics.

I will be running the AXI fan and here is a bottom shot.