Author Topic: 3 line throttle for a come back (Read 5838 times)

Bill Little · « **on:** February 17, 2012, 06:45:24 PM »

Mr. Tom Hampshire gave me a tip for when I try to start flying again. I have no idea what will happen after all this chemical treatment stuff is over. A little unsteady on my feet at times so he suggested I use a three line for the first few flights. If things get bad I can chop the throttle and land.

What 'cha think?

BIG Bear
RNMM/AMM

Chris McMillin · « **Reply #1 on:** February 17, 2012, 07:34:25 PM »

Cool idea. Start out taxiing! I hope you train at it until you are back in shape. "We" gotta a lot of models to build and fly yet, even if it is by correspondence!
Hope you're feelin' tip top, Bill.
Chris...

Avaiojet · « **Reply #2 on:** February 17, 2012, 08:07:03 PM »

Bill,

That's a great idea.

Sure beats having someone toss a rag into the flying airplane attempting to hit the prop.

Charles

John Fitzgerald · « **Reply #3 on:** February 17, 2012, 08:46:07 PM »

Why not use a mini servo and a IR remote? I think someone did this a few years ago. Maybe it was Windy U.?

Tim Wescott · « **Reply #4 on:** February 17, 2012, 08:52:52 PM »

I've got a friend who does that. He's got a Veco something-or-other, profile, 19 sized, with a 25LA on it and three lines. He flies till he thinks he's getting dizzy, taxis for a bit, repeat.

Jim Oliver · « **Reply #5 on:** February 17, 2012, 09:02:23 PM »

Bill,
How about short-tanking a flight or two? Or, get a co-pilot at circle center with you?

Regards,
Jim

Balsa Butcher · « **Reply #6 on:** February 17, 2012, 10:45:05 PM »

Bill, just add a fuel shut-off (availble from Brodak among others) to an existing profile stunt plane. This will give you the ability to shutter-down. They do require thin walled tubing. I can send you some if you go that route.

tom hampshire · « **Reply #7 on:** February 18, 2012, 06:25:05 AM »

Hi Bill - It's clearly a brilliant suggestion. Best for a full and happy recovery. Tom

bill bischoff · « **Reply #8 on:** February 18, 2012, 06:48:08 AM »

It's also a great way to be able to fly a carrier plane and still save face among your stunt friends.

Fred Cronenwett · « **Reply #9 on:** February 18, 2012, 07:33:41 AM »

Out of 9 flyable models in my fleet only one has a fixed needle valve, the rest have throttle control. I can take off and land when I ever I want, but my main focus is CL scale. When it comes to throttle control you actually have several choices available to you.

1) Clancy Arnolds electronic control system - this system require insulated lines with more drag however
2) The Ztron system which is based on the IR approach, Windy was selling these units, not sure if these are still available. These do not require insulated lines
3) Put a 2.4 Ghz radio in the plane and control the throttle with that....again no insulated lines on this approach
4) 3-Line control works and is still in use today

The 2.4 Ghz radio idea is being used more than you think for sport flying (It can't be used in competition however) and allows for normal flying lines and still have full throttle control. If you can not tolerate the insulated flying lines your only choices are 3-line, 2.4 Ghz radio or the IR approach.

I currently fly my models with a JR radio with the DSC function sending a signal and ground down the insulated lines. The other models in my fleet use the single channel electronic control with insulated lines. I will be experimenting with a test model this summer using a 2.4 Ghz radio to control the throttle using std flying lines.

This is a link to a book I wrote on CL scale and electronic controls that is available to download. I don't have Clancy's system in the book but the Multi-channel system is very similar in operation to Clancy's. The book covers the JR radio, Single channel, 3-line and the Ztron system. Look for the link on the right side 1/2 way down the page.

http://www.eicnetwork.com/eic/Scale.html

Good luck,
Fred C.

larry borden · « **Reply #10 on:** February 18, 2012, 08:42:58 AM »

I'm building a Ringmaster Bipe 1099 from Pat King. I like the idea of a shut off, got some shut offs made up from my days flying Texas Quickie Rat. It would be easy to put it on a profile and hook it up.

Russell Shaffer · « **Reply #11 on:** February 18, 2012, 09:30:48 AM »

Larry, do you have a picture or diagram of your shut off? I've been thinking of ways to do it but if you already know how it would nice.

PerttiMe · « **Reply #12 on:** February 18, 2012, 09:46:21 AM »

A cheap radio system, maybe a car radio with a trigger for throttle, is probably the most off-the-shelf way to get throttle control.

Obviously, it won't be contest legal but I don't think that is the goal here.

Bob Reeves · « **Reply #13 on:** February 18, 2012, 09:51:52 AM »

Personally I think the old 3 line Brodak or J-Roberts is the easiest and simplest way to go.

Bill, I think you have a great idea starting out with throttle control.. Plus it will give you a little practice for that Carrier airplane you are planning to build..

Balsa Butcher · « **Reply #14 on:** February 18, 2012, 10:16:06 AM »

Brodak shut-off, part # BH936. $32.99. not cheap but does come with all the hardware and parts necessary for installation. Putting one on an existing profile or one in the works would still be cheaper and easier than building an entirely new plane. Pic is of one installed in a SSR.

larry borden · « **Reply #15 on:** February 18, 2012, 10:22:15 AM »

Quote from: Russell Shaffer on February 18, 2012, 09:30:48 AM

Larry, do you have a picture or diagram of your shut off? I've been thinking of ways to do it but if you already know how it would nice.

The first three pictures are the shutoff mounted on the racer. We used a seperate control horn for the shutoff, controlled by a sharp down elevator that woul cause the fuel line to be pinched and shut down the engine.

The next two pictures are of another simpler version. The fuel line runs under the music wire that is under tension and whe down elevator is applied, pulls the wire out of the detent, pinches the fuel line snd shuts the engine off.

Since I have never used the three line system, I didn't think this was the vehicle to be testing it.

Avaiojet · « **Reply #16 on:** February 18, 2012, 02:53:19 PM »

[quote This is a link to a book I wrote on CL scale and electronic controls that is available to download[/quote]

Fred, Got any scale models with both throttle and retracts?

Quote

I'm building a Ringmaster Bipe 1099 from Pat King. I like the idea of a shut off, got some shut offs made up from my days flying Texas Quickie Rat. It would be easy to put it on a profile and hook it up.

I didn't know there was a Ringmaster biplane? Pat King creation?

Sounds really interesting. Photo of that?

Charles

Bill Little · « **Reply #17 on:** February 18, 2012, 04:06:57 PM »

HI Guys,

I appreciate the suggestions on throttle, but that is already covered with a plane that is already built and has the J.Roberts system. So nothing new is being built for this to happen.

(Bill B., that is exactly what is going to happen. The profile Crusader with a TT .36)

Bill

larry borden · « **Reply #18 on:** February 18, 2012, 05:43:52 PM »

Quote from: Avaiojet on February 18, 2012, 02:53:19 PM

I didn't know there was a Ringmaster biplane? Pat King creation?

Sounds really interesting. Photo of that?

Charles

The bipe is 1099 sq in and gonna be powered by a K&B 61. Here's a couple of pics. The next to the last photo is the stack of wood left over after punching out fuselage and tail feathers. Great kit!

Balsa Butcher · « **Reply #19 on:** February 18, 2012, 06:04:46 PM »

Getting back to the subject of the original post. Since the plane is built, the idea using a throttle controlled model to get back into flying is a good one. Go for it.

Steve Helmick · « **Reply #20 on:** February 18, 2012, 07:40:45 PM »

I'd go with a backup pilot in the circle and maybe short tank it with a clunk tank. Just do it, tough guy!

Steve

Bill Little · « **Reply #21 on:** February 18, 2012, 08:51:19 PM »

Quote from: Steve Helmick on February 18, 2012, 07:40:45 PM

I'd go with a backup pilot in the circle and maybe short tank it with a clunk tank. Just do it, tough guy! Steve

Well, since it is just my oldest son and I doing the flying I'll have to make a few laps to give him time to get out to the middle after he launches......

I'm just not sure what to expect from these treatments and am hedging my bets slightly.

BIG Bear
RNMM/AMM

pat king · « **Reply #22 on:** February 20, 2012, 12:33:07 PM »

I have big problems with dizziness these days. I will not build anything with a .60 or larger engine without a throttle control to be able to shut it down if I get too dizzy. I have all the parts for the new model Ringmaster Senior- 63" span and 835 square inches. It is for .60 size engines. I am slowly working on the Ringmaster Tri2K. A 2053 square inch Triplane for a Super Tigre 3000 I have.
The Bipe 1099 is a big airplane, 62 7/16 span 1099 square inches of wing area. I have a Ringmaster Bipe II available which has a 41 5/8" span and 413 square inches.
Your throttle idea is a good one Bill.

Pat

Avaiojet · « **Reply #23 on:** February 20, 2012, 01:02:13 PM »

Quote from: pat king on February 20, 2012, 12:33:07 PM

I have big problems with dizziness these days. I will not build anything with a .60 or larger engine without a throttle control to be able to shut it down if I get too dizzy. I have all the parts for the new model Ringmaster Senior- 63" span and 835 square inches. It is for .60 size engines. I am slowly working on the Ringmaster Tri2K. A 2053 square inch Triplane for a Super Tigre 3000 I have.
The Bipe 1099 is a big airplane, 62 7/16 span 1099 square inches of wing area. I have a Ringmaster Bipe II available which has a 41 5/8" span and 413 square inches.
Your throttle idea is a good one Bill. Pat

I hope the EAA doesn't find out about the Ringmaster.

Charles

Fred Cronenwett · « **Reply #24 on:** February 20, 2012, 03:03:42 PM »

Throttle control on the big models is important, I have been flying this airplane for the last 14 years with all sort of engines. Everything from a OS-91 four stroke, OS-91FX two stroke and now flies with a E-Flite E-60 electric motor. This model spans 80" and comes in at 12-13 lbs and was designed to carry a camera, that is why there is no rudder. The wheels are 5" in diameter.

This model will pull very hard at full power so throttle is very important on models of this size.

Fred C.

john e. holliday · « **Reply #25 on:** February 21, 2012, 03:49:16 PM »

Three line control is great for getting used to doing laps. The helper holds the plane til you get to the handle. He releases plane and you throtte up and take off. You can fly high speed or low speed, what ever suits your fancy. I can't remember if it was Bob Furr or George Lieb that told me that is how they got kids flying using the three line system. They would take off and fly, then throttle back and land or taxi. My son liked the throttle control planes. He also liked the racing planes. The faster the better. Watch out tho you may get hooked on throttle control planes.

Bill Little · « **Reply #26 on:** February 21, 2012, 03:53:11 PM »

From the first time I learned of throttle control (about 50 years ago!) I have wanted to try it. The time has come.........

I should be giving it a go in about a month.

BIG Bear
RNMM/AMM

john e. holliday · « **Reply #27 on:** February 21, 2012, 04:37:01 PM »

Hey Big Bear, don't push too hard in getting back in the groove. I need you around to keep me in line.

KenP51 · « **Reply #28 on:** February 21, 2012, 08:35:27 PM »

Quote from: Bill Little on February 18, 2012, 08:51:19 PM

Well, since it is just my oldest son and I doing the flying I'll have to make a few laps to give him time to get out to the middle after he launches......

I'm just not sure what to expect from these treatments and am hedging my bets slightly.

BIG Bear
RNMM/AMM

Use a stooge to delay launch till your son joins you in the center, then you can launch.
Or
Also for throttle a car radio would give you great control. Cost you 20 bucks + a battery, + a servo. Check this one out.
http://www.hobbyking.com/hobbyking/store/__12177__HK_300_3_Channel_2_4ghz_FHSS_Ground_Radio.html
Heck you could take it a step further and use the 3rd channel for a smoke system. Now I think that would be a kick.

Balsa Butcher · « **Reply #29 on:** February 21, 2012, 09:55:45 PM »

Or you could go with what you have...a J. Roberts type Bellcrank and 3rd line throttle, well proven, been working well for CONTROL LINE fliers for the past 40 or so years.

Bill Little · « **Reply #30 on:** February 23, 2012, 09:59:22 AM »

Quote from: Pete Cunha on February 21, 2012, 09:55:45 PM

Or you could go with what you have...a J. Roberts type Bellcrank and 3rd line throttle, well proven, been working well for CONTROL LINE fliers for the past 40 or so years.

Yep, I am going with what I already have. No need to build a new plane for this.

If I finally decide that I will be flying scale models I will go with Clancy's system. For now, this is just a down and dirty way to see if I can fly with out any problems. If I have problems I don't know WHAT I will do..................

BIG Bear
RNMM/AMM

Will Hinton · « **Reply #31 on:** February 23, 2012, 11:06:47 AM »

Hey there, coach, what you'll do is just reduce the effort down to what you CAN accomplish and work your way up from there!!!! You're gonna be blessed, dear brother, and WILL fly again!!! Hang tough and stay out of tents during the windstorms.

Bill Little · « **Reply #32 on:** February 23, 2012, 11:52:37 AM »

Quote from: Will Hinton on February 23, 2012, 11:06:47 AM

Hey there, coach, what you'll do is just reduce the effort down to what you CAN accomplish and work your way up from there!!!! You're gonna be blessed, dear brother, and WILL fly again!!! Hang tough and stay out of tents during the windstorms.

Thanks Brother Will!

OH yeah, there was a bunch of rain in with that wind!

Bill

Will Hinton · « **Reply #33 on:** February 23, 2012, 05:41:52 PM »

You two did sorta look like drowned rats the next day. I felt bad, since it was my tent!!

(For you guys, not for the tent!)

Bill Little · « **Reply #34 on:** February 23, 2012, 05:46:39 PM »

Quote from: Will Hinton on February 23, 2012, 05:41:52 PM

You two did sorta look like drowned rats the next day. I felt bad, since it was my tent!! (For you guys, not for the tent!)

I felt bad for you since it WAS your tent!

Bill

Author Topic: 3 line throttle for a come back (Read 5838 times)

larry borden

larry borden

larry borden