Re: Wing Post Sockets (tubes)

From: <vhacker_at_pol.net>
Date: Sat, 24 Feb 2007 21:01:18 -0500 (EST)

Two=-cures for loose wing posts. a little salvia will cause some swelling.
If that doe not work try a bit of tick glue The kind that alcohol
dissolves Hack

> Our Science Olympiad team has a plane that is right at the minimum
> weight and is well trimmed. An excellent prop/motor combination has
> been found through many flights.
>
> The lower rounded portions of the wing posts have apparently shrunk or
> compacted slightly over time and are starting to get looser in the wing
> sockets than the kids would like. They are made from 1/16 square balsa.
> The students don't want any unexpected, unintended changes in the angle
> of incidence of the main wing during a flight if, for
> example, the plane collides with a beam. The students would rather not
> replace the wing posts and risk damaging the wing. Unfortunately the
> wing posts and their angles braces were glued to the LE and
> trailing edge spars with CA. The students don't want to have to
> change the wing post sockets on the MS for fear of damaging the motor
> stick.
>
> I suppose you could cut off the lower segments of the existing
> wingposts and glue new segments over the same, with slightly larger
> rounded portions, but the new lower segments would have to be
> perfectly aligned to maintain the proper wash in on the inboard
> traing edge.
>
> Is there a good way of adding some material to the rounded lower ends
> of the wing posts to so that they fit more snugly in the wing post
> sockets? Someone mentioned putting a layer of CA on them. But then you
> can't do the temporary fix of wetting them so they expand.
>
> For wing post sockets our team is using Post-it tabs rolled around
> drill bits and held together with Duco, as recommended in Lew
> Gitlow's book. They have found them to be much better wing post
> sockets than those rolled from Japanese tissue which get mushy and the
> plastic tubes which are difficult to securely glue to the motor stick.
> They only weigh about .02 grams each.
>
> Thanks for your recommendations.
>
Received on Sat Feb 24 2007 - 18:01:37 CET