At 05:33 PM 7/10/2009, Scott Daniel  - Turbovans wrote:
>it's so understressed in that little car .......
>the engine probably never puts out more than about 1/3rd of what it can......

Good points, all.  I have to quarrel a bit with the following, though:

>I would have to say that most aircraft engines with propellers on
>them depend on ram-air cooling from the front .........
>and that the hub area and the root area of the propeller blades
>don't provide much air-cooling to the engine at all.

This is a radial engine that barely fits into a little car -- it's
looking at something like four feet of propeller diameter,
undoubtedly three or four bladed.

  --
David Beierl - Providence RI USA -- http://pws.prserv.net/synergy/Vanagon/
'89 Po' White Star "Scamp"