Focus Canopy Painting
Keith Black
tkeithb at attbi.com
Fri Mar 21 12:28:03 AKST 2003
This isn't a great shot, but is one example of a painted canopy and the Texas heat.
http://www.fototime.com/5713BDBAD638E26/standard.jpg
I had to replace this with a clear canopy.
Keith
----- Original Message -----
From: s.vannostrand at kodak.com
To: discussion at nsrca.org
Sent: Friday, March 21, 2003 8:56 AM
Subject: Re: Focus Canopy Painting
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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