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Rotax Snowmobile Engines

PostPosted: Wed Jul 08, 2009 5:48 pm
by mbrown
I am looking at the possibility of using a Rotax engine from a snowmobile for an experimental helicopter. The engine will probably be the Rotax 797. Typically, these engines are mounted with the crankshaft horizontal.
Is it possible to operate these engines vertically with the output shaft at the top?