Hey Piper 37 - gotta a question on the incidence angle.

Recently I finished pre-cover assembly of my HB. During the assembly I mounted the wings - OMG [:'(] (had to make new longer interplane struts). A fellow forum rat (friend from my club) pointed me to the incidence angles of the wings. The plans call for 0 degrees (with respect to thrust line / datum line) for the horizontal stab, top wing and bottom wing. You made the comment that your top wing is at 2 1/2 degrees. Is that measurement with 0 for stab & bottom wing? Is that a positive (leading edge above datum line) or a negative degree?

Btw - Iunderstand the difficultly of accurately measuring incidence with elevator & ailerons mounted.

TTFN,

thats  only on the top wing, theory was explained to me that having a little negative incidence on the top is way better than having any positive incedence, and the washer was meant to err on the side of caution. as for the stab &  bottom wing they are at 0.
actually with an inceidence meter it's not bad, cause you want to compare the wing tips to the fuse side of the wings. also helps to have your radio and rcvr on so that the servos hold the center position, worked for me anyways

Good point on using servos to maintain surface alignment. Thx.

I'm thinking a person could also use a rubber band and flat stock scrap to hold the aileron in place.

Place flat stock scrap under wing, stretch rubber band around flat stock at front of wing, go over wing, and back under flat stock aft of wing. It'll hold the aileron in place.
I used this technique quite a bit on my Ultra Sport rebuild.</p>

Hey vmsdude (just kidding) - I don't have that many rubber bands. [:@]  I have a bunch of composite building shims that I use to clamp the top and bottom surfaces. They are long enough to span the combined chord of the stab and the elevator.

There are a wealth of great ideas on the site. Only problem is remembering 'em when the time to use them comes around ...

TTFN

One can never have too many rubber bands....

Or too many clamps....

Before i started this hobby, I thought rubber bands were just for shooting at people.  There is alot of use for them in the shop.  They are cheaper than clamps, but clamps are very nice to have.  especially if you build with wood glue.