Gentlemen,

I wish to bring your attention to the work being done by Stuart Sherlock of Supercool Racing Propellers on the cooling systems of our F3D engines.

So far all of the in-air testing has been done with my Stiletto using a venerable OPS 40 (I know-VINTAGE) but it was useful in early development stages.
Results so far are encouraging in the cooling system (we were simultaneously testing his new Doppler recording gear, plus new prop designs AND the cooling system). Results so far are very encouraging as we found that after 5-6 flights the Glowbee plug came out as good as it went in.
Please read his articles (at least the 1st three) at http://www.supercoolprops.eftel.com/articles.htm