REFLECTOR: WING INCIDENCE [heur]

velocity xl velocityxl at fastmail.fm
Sun Mar 20 10:37:25 CST 2005


With shimming the wings how bad does it effect the Cowling
fit? Do you have to redrill all the holes?

Ron
----- Original Message ----- 
From: "larry" <larry at grrok.com>
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>;
"Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Sent: Saturday, March 19, 2005 8:35 PM
Subject: RE: REFLECTOR: WING INCIDENCE [heur]


> I made my shims with a "Handle".  I cut the shims the same diameters as
the
> wide area washers except for one area which was extended to form a
> handle.  This permitted me to hold the washers while I inserted the bolt,
> then rotate the handle below the wing surface before I tightened the bolt.
>
> At 12:24 PM 3/19/2005, Jay Yu wrote:
> >Hi Tom,
> >
> >I had the same issue (right turn tendency) and possibly more than yours
as
> >mine wasn't just "slight". I shimmed outer top wing bolt on the right
wing
> >and bottom wing bolt on left wing. This tendency is pretty much gone. On
> >each side, the shim is 3/64" (combining a 1/32" washer and a washer made
of
> >1/64" alumimum).
> >
> >If you plan to use this approach, try to use very thin shim such as 1/64"
or
> >1/32" to start with as it doesn't take much to correct this problem.
> >
> >You may want to experiment with the shim size. To do so, you want to
create
> >U-shaped washer out of aluminum sheet so you don't have to remove the
wings
> >to try (but you do need to loose all wing bolts). This was what I did.
> >
> >The only potential problem is that the outer eadge of the strake may not
> >match the wing as the wing incidence angle changed. This, of course,
depends
> >on how much shim is needed. It didn't cause problem for me as my plane
has
> >not been painted so I can correct the mismatch prior to painting.
> >
> >Jay
> >
> >-----Original Message-----
> >From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org]On
> >Behalf Of Tom Martino
> >Sent: Saturday, March 19, 2005 11:20 AM
> >To: Velocity Aircraft Owners and Builders list
> >Subject: RE: REFLECTOR: WING INCIDENCE [heur]
> >
> >
> >Equal weight in the front seats -- still a slight turn to the right.  I
> >will do more testing to see the actual aileron deflection.  Perhaps a
> >trim tab would do it.
> >
> >-----Original Message-----
> >From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
> >Behalf Of Jim Sower
> >Sent: Saturday, March 19, 2005 10:02 AM
> >To: Velocity Aircraft Owners and Builders list
> >Subject: Re: REFLECTOR: WING INCIDENCE [heur]
> >
> >Is this with or without passenger?  How does it behave in each
> >circumstance?  I think the threshold of wing shimming is something on
> >like 1/4" of aileron deflection required to maintain level flight.
> >Just a theory ... Jim S.
> >
> >Tom Martino wrote:
> >
> > >I didn't notice this at first ... but now I swear my plane makes a very
> > >gentle bank to the right when attempting to fly straight and level.  I
> > >find myself having to use a bit of left stick to keep it straight.
> > >
> > >
> > >
> > >I suspect my wing incidence (one wing is set too high or the other too
> > >low) ... and I don't have my original jig.
> > >
> > >
> > >
> > >First question:  Are there any good wing incidence meters available?
> > >
> > >
> > >
> > >Second question:  If I need adjustment, how do I do it?  I suspect I
> > >need to add washers?
> > >
> > >
> > >
> > >Have any of you done this?  And if so, did you have to get slightly
> > >longer wing bolts to handle more washers and still have some threads
> > >through the lock?
> > >
> > >
> > >
> > >Insight would be most appreciated.
> > >
> > >
> > >
> > >-----------------------------------------------------------------------
> >-
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