Uh, Please, Sirs

On Fri, 8 Oct 2004 12:22:49 -0400, " jls"
wrote:


"Jim Weir" wrote in message
.. .

Before you select the cheapest, may I suggest that you google on "Steve
Wittman"
and "accident".

Jim

Hey, Jim, I wouldn't violate an STC. I know all about Steve's tragic
accident and have read all the reports and articles. He unwisely used dope
as a fastener with the Stits process, which requires a vinyl-based glue and
weave filler to fasten dacron polyester to the wing structure. Catastrophic
flutter after fabric came loose on a wing or aileron is officially alleged
to be the cause of the deadly crash of his O-470-powered O&O Special. May
the great Steve Wittman and his new wife RIP.

And, by the way, I have used dacron often as a peel-ply for wet layups when
doing fiberglas work. That helpful quality of dacron polyester, i. e.,
that it doesn't stick and readily peels away after the layup has cured, is
enough to put one on notice that you better not use the wrong glue for
dacron unless you want to get your aXX busted.

I am just trying, cheapskate that I am, to find the best LEGAL covering
system for the money, not an aXXbuster.

Airtech, I understand, uses a different kind of glue. From what I can read
you don't, and can't, fasten dacron to an airframe with glues like dope.
You are compelled to penetrate the weave with a glue --Polytak, for

Vinylester Resin (Dow Derakane) penetrates right through the cloth,
but it still makes good peel ply. It wicks off the excess resin which
your peel off with the Dakron.

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com
example -- which develops its own structure in the woven interstices of the
dacron with a web-like grip.