Go Back  RCU Forums > RC Airplanes > Beginners
 Rudder Trim Question... >

Rudder Trim Question...

Community
Search
Notices
Beginners Beginners in RC start here for help.

Rudder Trim Question...

Thread Tools
 
Search this Thread
 
Old 11-09-2007 | 08:06 AM
  #1  
Thread Starter
Senior Member
 
Joined: Jun 2005
Posts: 408
Likes: 0
Received 1 Like on 1 Post
From: Centreville, AL
Default Rudder Trim Question...

If a plane yaws either right or left, will it have a tendency to drop the corresponding wing(ex. plane yaws left, will it likely drop the left wing )? Thanks.
Old 11-09-2007 | 08:15 AM
  #2  
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: Rudder Trim Question...

The simple answer is "Yes"

It's a bit more complicated, but IF the plane is going to drop a wing just from Yaw, it would be on the side it's yawing to
Old 11-09-2007 | 09:57 AM
  #3  
Thread Starter
Senior Member
 
Joined: Jun 2005
Posts: 408
Likes: 0
Received 1 Like on 1 Post
From: Centreville, AL
Default RE: Rudder Trim Question...

Thanks Minn. Appreciate it.
Old 11-09-2007 | 12:30 PM
  #4  
Hossfly's Avatar
 
Joined: Dec 2001
Posts: 6,130
Likes: 0
Received 2 Likes on 2 Posts
From: New Caney, TX
Default RE: Rudder Trim Question...


ORIGINAL: TideFlyer

If a plane yaws either right or left, will it have a tendency to drop the corresponding wing(ex. plane yaws left, will it likely drop the left wing )? Thanks.
That Depends: There are some airplanes that will NOT roll in the direction of applied rudder and subsequent yaw. In my 41 years of 1:1 scale, I never experienced such, however in models I have done so on a number of different models, all low wing.

The old Top Flite Contender was famous for it. Apply rudder and the machine yaws to the proper direction, then rolls opposite. Until that was discovered many RC pilots had many problems when using rudder trim for maneuver tracking, that the aileron trim also instantly became a problem. The old Sterling SL-62, a great flier, suffered the same characteristic. I had a scale ME-109, 40 size, that did the same, even though the stab was mounted high when compared to the rudder.
Now the two popular models, Sky Raider M-II and the "Racer", being used in Club 40 racing also have that characteristic. Rudder right, yaws right and rolls left, and the same results when rudder left.

Except for the ME-109, all models that I have found to do this, have had a high rudder placed well above the low flat stabilizer/elevator.
Makes for interesting conversation.
Sorry Minn Flyer, but there are no "simple answers" that always work. As the old cliche states, "It's not so much what you don't know that hurts you, as it is that which you know for certain that ain't so!" I believe that was a Will Rogers thing, but don't know for certain.

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.