"RST Engineering" wrote in message ...
This may seem like a stupid idea, but good ideas sometimes come in stupid
clothes. In a normal air-cooled tractor engine, cold air comes in the
front, passes over and through the cylinders, and is exhausted through the
plenum chamber called the bottom of the cowl. Rapidly moving air, that
after it does it cooling job, is no longer of any use.

Remember back in dem halcyon days of the 50s and 60s we sometimes mounted
inefficient little generators on small pylons on the bottom of the airframe
and called them wind driven generators (the electrical equivalent of the
side-mounted venturi tube)?

I'm just wondering if anybody has used either this scrap dump air to run a
wind driven generator, or whether any one of a number of ways of generating
electricity from heat has been attempted to convert waste exhaust gas into
excited little electrons? SOrt of a turbogenerator, if you will.

Jim

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Centrifugal blower run backwards...gotta watch out not to dam things up too much...

And...you could reverse drive it to pull air through the engine for cooling on the ground?