In article
,
bizguy writes
You could look at outboard motors as a starting point. In the past I
read of someone using a Mercury to get 100 hp in an aircraft.

That seems unlikely, to be honest. I've never met an outboard that
wasn't cooled by pumped water.

--
Nigel

When the only tools you have are an X3 mill, a
Colchester and assorted other stuff, every problem looks like a steam engine.