On Apr 3, 12:52*pm, Neal Fulco wrote:
I'm thinking about making a carb. heat plenum for my plane out of
fiberglass ( epoxy.) * I had done it once for my Quickie many years
ago because that's what what the plans said to do. *But that was a
very small plenum. *Due to space constraints, it would be very easy to
make it out of fiberglass for my new project ( 120 h.p.) but I'm
wondering if the carb heat would be too hot for the fiberglass. *I
will make it out of aluminum if I have to, but it would be harder to
do. *Do you think the fiberglass would work? *Thanks

Neal

On my Glasair, I have a composite plenum on the intake side of the
carb with a flapper valve to direct air. The plenum is actually part
of the cowl with a rubber gasket next to the carb. Don't know what
was used to make the part, but it's attached to the cowl with
vinylester. Seems to work OK.

Ed