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<DIV><FONT face="Comic Sans MS" color=#000080 size=2>Talking about surface temps
in the hot sun..... Color has a big impact. I have one of those IR temp
measuring devices and last summer I measured the temps on different colors of
monocote from white to saphire blue. With an out side temp somewhere about 90 or
so, I saw skin temps rangine from the low 100's for white while the med dark
blue was well toward 140-150.</FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080 size=2></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" color=#000080 size=2>Later this year when it
gets warm, I'll do the temp measuring thing again and report the findings for
different colors....If I can remember to do it.</FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080 size=2></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" color=#000080 size=2>I have seen dark canopies
that didn't melt, but I would assume that some materials would suffer at 150 deg
F.</FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080 size=2></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" color=#000080 size=2>Cheers,</FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080 size=2></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" color=#000080 size=2>Ken Blackwell</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=s.vannostrand@kodak.com
href="mailto:s.vannostrand@kodak.com">s.vannostrand@kodak.com</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, March 21, 2003 8:56
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Focus Canopy Painting</DIV>
<DIV><BR></DIV><BR><FONT face=sans-serif size=2>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.</FONT> <BR><BR><FONT face=sans-serif
size=2>--Lance</FONT> <BR><BR><BR><BR>
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<TD><FONT face=sans-serif size=1><B>"GeorgeF."
<av8tor@flash.net></B></FONT> <BR><FONT face=sans-serif
size=1>Sent by: discussion-request@nsrca.org</FONT>
<P><FONT face=sans-serif size=1>03/21/2003 08:30 AM</FONT> <BR><FONT
face=sans-serif size=1>Please respond to discussion</FONT> <BR></P>
<TD><FONT face=Arial size=1> </FONT><BR><FONT
face=sans-serif size=1> To:
discussion@nsrca.org</FONT> <BR><FONT face=sans-serif
size=1> cc:
</FONT> <BR><FONT face=sans-serif size=1>
Subject: Re: Focus Canopy
Painting</FONT></TR></TBODY></TABLE><BR><BR><BR><FONT face="Courier New"
size=2><BR>><BR>><BR>>Trust me, if you paint it black and set it out
in the sun it will get HOT, <BR>>some plastics may handle it better than
others, but it will get hot, I'll <BR>>bet so hot you can't touch it.
I've done it and got away with it, but <BR>>I've also seen them
melt/deform so be careful. The shame of it is that I <BR>>like the
looks of a black canopy, both on the ground and in the air, but <BR>>having
seen a couple deform I've decided against black. Ya' paints yer'
<BR>>canopy and ya' takes yer' chances.<BR><BR><BR><BR>Not sure what the
thickness of the plastics used were or if they were being <BR>painted on the
inside or outside but mine did NOT get hot to the touch.<BR><BR>Mine were
painted on the inside, possibly the fact the sun rays need to go <BR>through
the plastic before hitting the black may deflect the rays causing <BR>them to
hit at an angle other than 90 degrees. This deflection will reduce
<BR>heat build up. But I've done about 12 or so planes that way, they've
set <BR>in full sunlight on 90 degree days and have yet to have one deform in
<BR>anyway....<BR><BR>George<BR><BR>=====================================<BR>#
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