Bob wrote- >In 110F ambient air the peak surface temp is 162F with white; >171F with yellow; 220F with Green or Red; and 237F with Black
And if you'll research the archives, you'll find that it's been said here before that extruded polystyrene foam board (Owens Corning pink or Dow blue) will begin to lose its dimensional stability at about 165F. You're liable to see bubbles, warping of formerly smooth surfaces, humps, dips, and other things. Another good reason to use urethane foam or stick with strictly white finish on your composite airplane. I must confess that I built my "KR Construction Trainer" using Owens-Corning pink foam board with the exception of the wet-wing fuel tanks (urethane foam with vinylester epoxy, but not yet constructed). Oscar Zuniga San Antonio, TX mailto: [email protected] website at http://www.flysquirrel.net _________________________________________________________________ >From photos to predictions, The MSN Entertainment Guide to Golden Globes has it all. http://tv.msn.com/tv/globes2007/
