ORIGINAL: downunder
Not that it's totally applicable to sports models but some might find it interesting the extent that one guy went to with a pylon engine to get decent cooling.
http://www.supercoolprops.com/articl...ed_cooling.php
Some of the ideas could be a help with even our basic type cowling, especially the bit about a plenum chamber and intake shape.
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Every time my eye grabs your avatar, I keep expecting a massive "pock" on the end of my nose! <G>
It makes me flinch.