federigo(at)pacbell.net
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 Posted: Mon Jan 09, 2006 9:06 am Post subject: Re: Heavy Wing/Aileron adjustment |
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I just spoke to Tom at Van's and he claims that changing one of the
aileron rod lengths should have no impact on a heavy wing. He is also
negative on compensating for a heavy wing by lowering one of the flaps.
His only suggestion for the nine, is to figure out what is out of rig
and fixing it, or putting a wedge under the aileron of the opposite
wing. His plane is out of rig so he has an aileron wedge, and he
decreases fuel for takeoff in one wing when flying a passenger.
Leland
| Quote: |
Time: 10:47:28 AM PST US
Subject: RE: RV9-List: Re:Re:RV-9A Insurance
From: Gerry Filby <gerf(at)gerf.com>
Hmmm, I just re-read the Vans pdf file I have that contains
instructions for dealing with a heavy wing and it doesn't
mention anything about the flaps ... did you mean aileron ?
I think the doc I have refers to the 6 - do you have a
different doc that's specifically for the 9 ?
g
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fcs(at)jlc.net
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| Posted: Mon Jan 09, 2006 9:46 am Post subject: Re: Heavy Wing/Aileron adjustment |
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To say that trimming a flap would have no bearing on a wing-low condition
is silly IMHO. The flap is aerodynamically similar to a huge aileron,
aside from being further inboard. A tiny amount of differential adjustment
makes a noticeble correction. It has worked fine for me and those who
recommended it to me. I don't have any way to verify the original source,
but I was told the advice came from Vans and that it is a common tweek. I
can say with 100% confidence that it worked like a charm for me! It's
likely that many cases of "heavy wing" (assuming the scales don't back it
up) are really nothing more than a minor rigging issue with flaps or
ailerons. When you watch your ailerons in flight, you come to realize what
a huge effect a tiny movement has.
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