The pale green colour gives away that the resin is probably Class 2 fire
retardant
(polyester), which is what I have believed it to be, having been told that
by the company that made the Classic cowls; others might be different.
It might also be vinyl-ester, but I doubt it and this resin is now in any case
very difficult to track down in Class 2 quality (Dow used to supply it, but
don't
appear to any more).Standard Class 2 polyester can be post cured to a Tg of
up to 80C, which is more than enough for cowls (other than close to
inappropriately
fitted/protected manifolds, which can/should be dealt with by other means).
There would be other issues under the cowls at 80C to worry about!
Duncan McF.
----Original Message----
From: kingsnjan@westnet.com.au
Date: 28/10/2017 12:35
Subj: Re: Europa-List: Re: Europa Cowl Resin
Thank you Pete and Frank and yes Frank, I do have the Classic cowls.
Strangely, the inside of my cowls are still a nice pale green colour with no
yellowing like other parts of the airframe. I have always been of the
opinion they might have some phenolic base in them and when I have cut them,
I reckon it smelt very much like polyester.
Thanks again men . . . . onwards and hopefully Upwards!
Kingsley
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