"Eric Greenwell" wrote in message
...
wrote:
Wow. This morning -- when it was nice and nippy -- I pulled the fuse
into the garage and the front and back ends of the canopy frame were
curled up a good 2mm above the fuse. Over the next six hours, when the
temp rose from 40 to 70 degrees thanks to a heater in the garage, that
space got noticably smaller.

Seems like it might be a waste of time trying to seal it, if you can
get it to shut tight at just one temperate range!

I don't notice this kind of variation on my ASH 26 E canopy fit. It does
have a heavy canopy frame and very rigid cockpit sill. Perhaps the frame
and sill are made from the same material so they shrink and expand at the
same rate, and the frame is strong enough to overpower the plexiglass.


--
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Eric Greenwell
Washington State
USA

The last canopy frame I made was from solid Carbon fibre. The average cross
section was 1" sq.. The fit was noticeable better over a larger temperature
range as against a frame made from fibre glass . The perfect fit is only
reached at one
temperature. I made the compromise at a shop temperature
of 72 degree and allow .010" of clearance at either. It work well.
Udo