On Friday, February 24, 2017 at 5:14:51 PM UTC-5, Bob Kuykendall wrote:
You're going to have a lot more success if you say where in the world you are.

It would also be nice to know what sort of distortion you're talking about. If they're twisted or unusually bent, that could be a problem. But if they've just got a lot of small dents wrinkles, or waves, that's just the way they tend to look after a few decades.

Except when they are brand new, flaps and ailerons for ASW 19 and the like will always be pretty gnarly looking. In order to give them enough bending flex so they can follow the wings as they bend, they have to be very lightly built. So they tend not to be very rugged, and they tend to get wavy as they age. It looks kind of sad, but I've never known one to be unflightworthy because of it.

When I tore apart an ASW20 flap section a while back, I found that the basic layup was two plies of +/-45-deg. 2oz Kevlar separated by ~1/8" (3mm) Rohacell foam. The leading edge area at the upper and lower pivot radii was two piece of solid spanwise balsa joined with a shmoo bar joint. Except for that leading edge, there just isn't much there there. For contrast, most wing skins from that era have about ~9oz fiberglass on the outside, ~1/4 (6mm) of PVC foam, and ~5oz of fiberglass on the inside of the foam.

Thanks, Bob K.
https://www.facebook.com/HP-24-Sailp...-200931354951/

How bad are they? Real bad. I am not in front of them now but from memory, leading edge to trailing edge they dip / sag more then a 1/4" and they are only what 7" front to back? each bay does the same and top and bottom do the same. One upon a time the gel coat was replaced with PU. We think it was filled with filler at that point. They were checked and found to be unbalanced and the filler was taken down. that was 10 years ago and they have gotten worse every year. no one knows the cause. From 100 feet away you say " what the hell" hope that gives you an idea of "bad" Glider is in Canada but we would be happy if we found a set in the Artic.

Any leads appreciated.

Thanks
Kerry