<VV> White pushrod tubes

[N. Joseph Potts]

Dave -
     White reflects RADIANT heat. Pushrod tubes are subject to CONDUCTIVE
heat (from the heads) and CONVECTIVE heat (from the cooling airstream).
White will shed all the RADIANT heat they are exposed to, which is zero. And
yes, black will ABSORB all that radiant heat (still zero). No effect on
conductive or convective heat.

Joe Potts
Miami, Florida USA (plenty of all kinds of heat here)
1966 Corsa coupe 140hp 4-speed with A/C

-----Original Message-----
From: virtualvairs-admin@corvair.org
[mailto:virtualvairs-admin@corvair.org]On Behalf Of Dave Morris
Sent: Friday, February 04, 2005 3:29 PM
To: virtualVairs@corvair.org
Subject: Re: <VV> White pushrod tubes

I'm sure NASA will be pleased to hear that they can change the colors they
have been using.  And I'm sure all of us who are building aircraft that
have to be painted white so they don't overheat will be pleased to hear we
can now paint our airplanes a different color.

On the other hand, I'll bet I can come up with a ton of references in the
next 2 minutes that say white reflects heat better than any other
color.  I'll bet anybody who knows how to use Google can too.  To wit:

"On a 90 degrees F / 32.2 C clear sunny, day in Austin Texas, a white roof
had a temperature of 110 degrees F / 43.3 C, an aluminum coated roof, 140
degrees F / 60 C, while a black, single ply roof, a temperature of almost
190 degrees F / 87.8 C (yes, one hundred and ninety degrees Fahrenheit,
eighty seven plus degrees Celsius). "

etc. etc. etc. etc.

Dave Morris