Go Back  RCU Forums > RC Airplanes > RC Scale Aircraft
Tiger Moth Aileron Differential >

Tiger Moth Aileron Differential

Notices
RC Scale Aircraft Discuss rc scale aircraft here (for giant scale see category above)

Tiger Moth Aileron Differential

Old 08-30-2002, 03:02 AM
  #1  
Member
Thread Starter
My Feedback: (1)
 
Join Date: Jan 2002
Location: Pace, FL
Posts: 47
Likes: 0
Received 0 Likes on 0 Posts
Default Tiger Moth Aileron Differential

The full scale Tiger Moth has a tremendous amount of aileron differential, something like 10" of up aileron travel and 1.5" down measured at the TE.

Do those folks flying 1/4 scale model (88" span) TMoths like Clark's or Flair's kits set them up that way, or is there some aerodynamic difference between full scale and 1/4 scale that alters the amount of differential required?

Thanks,

Tom
Old 08-30-2002, 06:29 PM
  #2  
My Feedback: (1)
 
Tmoth4's Avatar
 
Join Date: Mar 2002
Location: Northfield Center, OH
Posts: 2,205
Likes: 0
Received 2 Likes on 2 Posts
Default Tiger Moth Aileron Differential

I have differential set up on my 1/4 Tigermoth, not as extreme as the full-sized, though. It still is hard to get a roll out of it but it doesn't seem to hurt. It might make the turns a little smoother. I did it by offsetting the servo wheel to get more up than down.

The Dennis Bryant Tmoth plans show a very scale-like setup for the ailerons.

Jim
Old 09-02-2002, 01:46 PM
  #3  
Member
Thread Starter
My Feedback: (1)
 
Join Date: Jan 2002
Location: Pace, FL
Posts: 47
Likes: 0
Received 0 Likes on 0 Posts
Default Tiger Moth Differential

Thanks for replying, Jim.

I set mine up per the plans with the servo arm 30 deg. forward at neutral, which gives some differential. From there I can dial in more in my TX if need be, although from your experience it doesn't sound like I'll ever need to get as extreme as full scale.

I still haven't decided on an engine. I'd like to use a small gas engine, but haven't made a choice. What do you have installed in your TMoth?

Tom
Old 09-02-2002, 04:52 PM
  #4  
My Feedback: (1)
 
Tmoth4's Avatar
 
Join Date: Mar 2002
Location: Northfield Center, OH
Posts: 2,205
Likes: 0
Received 2 Likes on 2 Posts
Default Tiger Moth Aileron Differential

Tom,

I built my moth from the 1/4 scale Mike Smart plans from Bob Holman. I used the smaller Dennis Bryant plans as a reference because they're more accurate, and I made some mods from the M. Smart plans.

I have a converted 30cc Homelite in mine. I hopped up the engine a little by using the bigger bore carb from Carrprecision. I had planned on using a Ryobi 31cc but I can't get it to run reliably. I think the Fuji 32cc or the Zenoah 38cc would be good. Both have a rear exhaust which would save some problems with the narrow nose. You'd have to cut a hole for the carb though. The Zenoah 23 would probably be enough power but you'd have to deal with the side exhaust. Mine weighs 17 lbs. and flies in a scale-like manner. It can do some limited aerobatics and does real nice spins. More power doesn't really make it go any faster, because of all the drag, I think.

What plans or kit did you use? You might have to beef up the nose area a little with some ply and gussets for a gas engine.

Click on "gallery" button below to see a picture of my moth.

Jim
Old 09-04-2002, 04:21 AM
  #5  
Member
Thread Starter
My Feedback: (1)
 
Join Date: Jan 2002
Location: Pace, FL
Posts: 47
Likes: 0
Received 0 Likes on 0 Posts
Default Tiger Tales

Hi Jim,

My Tiger Moth is a 1/4 scale also, from the Clark kit. I bought it from a fellow in California a couple of months ago and am learning it's ins and outs as I get it ready to fly this Fall/Winter. It's a nice looking model (trainer yellow) with lots of detail so I'm pleased so far. I bought a set of plans and instructions from Clark so I wouldn't do something dumb - like get the CG wrong.

The Clark kit is based on a Quadra or Ryobi for power, so there's lots of ply in the firewall area. I'll have to build a short ply box off the firewall to pick up the rear of the engine, but that's not a problem.

You're definitely right on the rear exhaust. Makes things much easier. That long, narrow cowl means one way or the other I'm probably going to have to cut a hole for the carb. Sure hate to do it though. I'm still accumulating engine information - thanks for the tip on the Fuji, hadn't thought of that one.

I checked the photo of your Moth in the gallery - what a beauty! I really like the colors and markings - lots of detail too. Just a really nice airplane.

Tom
Old 09-04-2002, 03:48 PM
  #6  
My Feedback: (1)
 
Tmoth4's Avatar
 
Join Date: Mar 2002
Location: Northfield Center, OH
Posts: 2,205
Likes: 0
Received 2 Likes on 2 Posts
Default Tiger Moth Aileron Differential

Tom,

I hated to cut the hole in the cowl for the carb but it doesn't stick out all that much. There is also a big air cleaner or scoop on the full size which could cover this up for static display. When I'm flying it I leave it off. I had to build a ply standoff on the firewall to mount the engine. The Ryobi would have fit real well, with it's rear exhaust and intake, but then priming and choking would have been a problem.

Thanks for the compliments. I like to see some pictures of yours also.

Jim

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On


Thread Tools
Search this Thread

Contact Us - Manage Preferences Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.