Go Back  RCU Forums > RC Airplanes > Kit Building
 Balancing a plane with retracts >

Balancing a plane with retracts

Community
Search
Notices
Kit Building If you're building a kit and have questions or want to discuss kit building post it here.

Balancing a plane with retracts

Thread Tools
 
Search this Thread
 
Old 01-29-2010 | 08:19 PM
  #1  
Thread Starter
 
Joined: Jun 2006
Posts: 184
Likes: 0
Received 0 Likes on 0 Posts
From: Anderson, IN
Default Balancing a plane with retracts

Ok, Simple question. ( I think) When balancing my GP Corsair 40 Kiton whichI've installed mechanical retracts, balance the model with gear up or gear down? Thanks!
Old 01-29-2010 | 08:44 PM
  #2  
RCKen's Avatar
RCU Forum Manager/Admin
My Feedback: (9)
 
Joined: Jul 2002
Posts: 28,236
Likes: 0
Received 31 Likes on 27 Posts
From: Lawton, OK
Default RE: Balancing a plane with retracts

Up.

Ken
Old 01-29-2010 | 10:03 PM
  #3  
 
Joined: Aug 2004
Posts: 2,263
Likes: 0
Received 4 Likes on 4 Posts
From: Jacksonville, FL FL
Default RE: Balancing a plane with retracts

How about if it is trike gear?
When that nose gear comes down it sure makes the plane nose heavy on landings.
Takeoff isn't so bad because you are retracting them asap.
It takes all the up elevator I can muster to get the plane back on to the ground.
Any suggestions?
Old 01-30-2010 | 06:16 AM
  #4  
MinnFlyer's Avatar
Senior Member
My Feedback: (4)
 
Joined: Apr 2002
Posts: 28,519
Likes: 0
Received 9 Likes on 9 Posts
From: Willmar, MN
Default RE: Balancing a plane with retracts

It really shouldn't make THAT much difference. A trike with the nose gear down on landing should be less nose-heavy than that same plane with the gear up and a full tank of fuel.

Maybe you're a little nose-heavy to begin with? Try changing the CG a little at a time.

What kind of wheels? If they are heavy, try Sullivan Skylites.
Old 01-30-2010 | 06:39 AM
  #5  
Thread Starter
 
Joined: Jun 2006
Posts: 184
Likes: 0
Received 0 Likes on 0 Posts
From: Anderson, IN
Default RE: Balancing a plane with retracts

Up it is. (at least for my corsair) Thanks guys!
Old 01-30-2010 | 07:55 AM
  #6  
 
Joined: Aug 2004
Posts: 2,263
Likes: 0
Received 4 Likes on 4 Posts
From: Jacksonville, FL FL
Default RE: Balancing a plane with retracts

Not so. When the wheel is lowered the weight of the tire, post, and strut are moved from the rear to the front. The front is then made heavier.
The plane is balanced right on with the gear up. Down, the nose is heavy.
Old 01-30-2010 | 10:03 AM
  #7  
DavidAgar's Avatar
My Feedback: (108)
 
Joined: Dec 2001
Posts: 5,054
Likes: 0
Received 8 Likes on 8 Posts
From: Battle Ground, WA
Default RE: Balancing a plane with retracts

When you are balancing a plane that has the gear moving towards the rear of the plane, you always balance the plane with the gear in the up position. It is true that when the gear comes down it will cause the plane to become a tad bit nose heavy, however it goes back to the old adage, a tail heavy plane fly's once, a nose heavy plane fly,s many times. Good Luck, Dave
Old 01-30-2010 | 03:47 PM
  #8  
 
Joined: Aug 2004
Posts: 2,263
Likes: 0
Received 4 Likes on 4 Posts
From: Jacksonville, FL FL
Default RE: Balancing a plane with retracts

OK, we are on the same page...I'll try a lighter tire.
Thanks for discussing it with me...I feel better now.
Ron


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



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

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.