Fred,
The rubbing on the closeouts and limited travel will be remedied when
you bond on the top skin. You'll simply trim the closeout to fit. My
ailerons were a tad short, too. I simply trimmed the wingtip to fit.
No problems, so far...
Jeff
Baby Blue
Fred Klein wrote:
>
> Gentlemen,
>
> First, it's inspiring to read about flying experiences w/ our
> wonderful little birds...especially to one who has only recently been
> able to get down to some serious work on his XS mono kit. Care to take
> a stroll down memory lane?
>
> I've checked the archives on the subject of fitting the ailerons to
> the wing and found no previous posts which deal with the particular
> problem I've created for myself...indulge me for a moment.
>
> Fitting the starboard aileron to the wing seemed like a piece of
> cake...plenty of travel, no rubbing or snags.
>
> The port aileron has been a somewhat different story...the first thing
> I noticed after clecoing it in place was significant rubbing of the
> top surface on the trailing edge closeout. Then I noticed that the
> trailing edge of the port aileron was 1/8" short of the trailing tip
> of the wingtip, whereas the starboard aileron was 3/8" short of the
> wingtip.
>
> I also noticed that the offset between the flap closeout and the
> aileron closeout on the starboard wing was 1 inch but on the port wing
> it was 1.5 inches.
>
> The net result of these differences appeared to be that the starboard
> wing/aileron would have between 1/4 and 1/2 inch more chord that of
> the port wing. I found no references in the manual which noted this as
> a design feature; after taking numerous comparative measurements, it
> appeared that the aileron closeout and hinge line of the port wing was
> between 1/4 and 1/2 inch further aft than on the starboard wing. It
> appeared to me that a bit of trimming would equalize the wing area,
> and by moving the port aileron forward, I would reduce the rubbing
> between it and the closeout.
>
> Accordingly, I proceeded to trim (first) the lower trailing edge of
> the port wing and re-established the hinge rebates, trial fitted the
> aileron, and subsequently trimmed back the top trailing edge of the
> closeout. After remeasuring, I found I had two wing/ailerons of the
> same size.
>
> Ahh...that pesky law of unintended consequences!...for now I find that
> with "up" aileron, the leading edge of the aileron hits the inside
> surface of the closeout...and...I do not have the required amount of
> travel with "up" aileron limited to about 20 degrees.
>
> To dig myself out of this hole, I propose to shave back a portion of
> the leading edge of the aileron which is buried in the wing trailing
> edge closeout and re-glass as necessary.
>
> At this point, I'm wondering if I've been too anal retentive about
> having my wing/ailerons match (?)... whether others have noticed
> similar variations and let them be (?)...or whether my "fix" seems
> reasonable (?). Comments Please!
>
> Fred
> A194
>
>
|