REFLECTOR: Roll trim?

[Dave T Nelson]

From:   reflector-request at tvbf.org
To:     reflector at tvbf.org, 
Date:   04/18/2014 11:37 AM
Subject:        Reflector Digest, Vol 109, Issue 33
Sent by:        reflector-bounces at tvbf.org


I've never had a (working) roll trim system...

Mine is the original STD-RG.  I purchased the kit from Danny himself, so 
this really is the original-original.  Back then, there was an electric 
motor mounted on the aluminum bracket which supported the aileron cable 
connection to the control stick torque tube.  The motor used a string 
(yes, just a string) which was to be wound around the motor shaft and 
whose ends were connected to springs, which in turn were connected to the 
control stick torque tube.  In theory, the motor put force on the string, 
which in turn pulled the springs, which in turn applied force to the 
torque tube.  Rube Goldberg, anyone?  In practice, the whole thing never 
worked worth a damn, so I got rid of it.  1100+ hours and counting... 

My best advice - just build it as straight as you can. 

Dave

----- Message from Don Johnston <numa at comcast.net> on Fri, 18 Apr 2014 
10:54:19 -0500 -----
To:
"reflector at tvbf.org" <reflector at tvbf.org>
Subject:
REFLECTOR: Roll trim?
I'm finally getting around to trying different springs to go with the cog 
belt and pulley trim system (thanks Geoff!). 

And while sitting back there looking at the whole roll trim thing it 
occurred to me that none of the single engine piston planes I've flown 
have a roll trim system. If the plane flies with a heavy wing, that's 
fixed by rigging. Either adjusting the wings themselves or adjusting the 
ailerons. 

So here's "The question":  Has anyone omitted the roll trim mechanism?

-Don
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