Ian spent a lot of time experimenting with K&W curved diffusers
and found out he could cut down then size of the James scoop opening
and increased the top speed 10 KTs. The oil cooler and rad are under
the engine in a vertical V configuration.

He also added a lot of exit area by installing louvers on the sides
of the cowl. He uses a external muffler to keep the heat out of the
cowl and the RX8 engine is probably quieter than most aircraft
engine airplanes I have heard.

He also swears by Evans propylene glycol coolant which has a 300 F
boiling temperature.

He lives in a difficult area of the world with temperatures going to 110
degrees F.


Paul Lamar In Mandurah  WA
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