REFLECTOR: RIGGING
Greg Poole
gpoole at zeta.org.au
Mon Aug 29 22:41:09 CDT 2005
...yep, call Brendon Tom...and then don't leave the rest of us hanging!
(i.e.: tell us what he said!)
In anticipation...
Greg in Sydney.
-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Scott Derrick
Sent: Tuesday, 30 August 2005 1:11 PM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: RIGGING
Tom,
I would call Brendan at the factory to verify the procedure.
I thought and might be wrong, that you shimmed the wings to attain a
level flight, and then corrected for yaw by shimming the rudder.
I remember also being told to reduce incidence in the light wing first
before increasing incidence in the heavy wing.
one way will be a faster airplane, the other will be slower.
I'd call Brendan.
Scott
Tom Martino wrote:
> I am approaching my 40 hours (20 for plane, 20 for engine)
and I
> have finally gotten the plane to fly straight and level by shimming my
> left rudder (it sticks out about ¼ inch)
I glued a rubber stop to
> the inboard edge of the wing (where the rudder rests).
>
> I would like to check my reasoning here to see if I corrected the
> problem correctly and made accurate assumptions:
>
> When first attempting to fly straight and level with hands and feet
> off
the bubble was out to the left and the nose pointed slightly to
> the right and the left wing wanted to rise.
>
> I assumed this condition as caused by a yaw problem (rudder trim
> correctable) rather than a wing incidence problem.
>
> I figured
if it was just a wing-incidence problem, the yaw would not
> necessarily be off. On the other hand
a yaw problem alone could
> cause the outboard wing to lift.
>
> Since shimming the rudder was the easiest thing to do, I shimmed it!
> That correct the yaw problem and the wings now stay level.
>
> So here is my question: Did I make the correct assumptions? Could I
> actually have a wing-incidence problem
that is now being masked by
> the shimmed rudder?
>
> Had I adjusted the wing incidence
would that have corrected the yaw
> and wing lift problem?
>
> I know that this sounds complicated
but I simply want to know that I
> am attacking the problem in the right spot.
>
> Thanks in advance for your opinions.
>
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