Focus Canopy Painting

[s.vannostrand at kodak.com]

90 degrees?  That's not a hot day.  2 years ago we had 65 days over 100. 
It's routinely 103-105 degrees on the blacktop and the sun is at level 6. 
Most epoxys have glass transition at 120 degrees and get rubbery soft. 
I've seen fiberglass cowls with thumb holes in them because they were soft 
when the owner grabbed the plane to apply the starter.  It's during July 
and August that you guys get back at us Southerners for all the bragging 
we do about weather at this time of year.

--Lance





"GeorgeF." <av8tor at flash.net>
Sent by: discussion-request at nsrca.org
03/21/2003 08:30 AM
Please respond to discussion

 
        To:     discussion at nsrca.org
        cc: 
        Subject:        Re: Focus Canopy Painting



>
>
>Trust me, if you paint it black and set it out in the sun it will get 
HOT, 
>some plastics may handle it better than others, but it will get hot, I'll 

>bet so hot you can't touch it.  I've done it and got away with it, but 
>I've also seen them melt/deform so be careful.  The shame of it is that I 

>like the looks of a black canopy, both on the ground and in the air, but 
>having seen a couple deform I've decided against black.  Ya' paints yer' 
>canopy and ya' takes yer' chances.



Not sure what the thickness of the plastics used were or if they were 
being 
painted on the inside or outside but mine did NOT get hot to the touch.

Mine were painted on the inside, possibly the fact the sun rays need to go 

through the plastic before hitting the black may deflect the rays causing 
them to hit at an angle other than 90 degrees.  This deflection will 
reduce 
heat build up.  But I've done about 12 or so planes that way, they've set 
in full sunlight on 90 degree days and have yet to have one deform in 
anyway....

George

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