Yamaha has been building a 4 stroke snowmobile engine that is about a 1000cc's. It puts out a 100 HP or so. Does anyone know about the use of this engine in an airplane?

      Dave

I recently read about Genesis Aircraft using the four stroke Yamaha snowmobile engines on their airplanes. Can't remember where the article was written though. Mark

I can't find any stats on the engine but I did find a brief write-up about it's use in an airplane:

http://www.snowgoer.com/output.cfm?id=1955521

There are 35 pages of discussion on the Rotary Wing Forum here:
http://www.rotaryforum.com/forum/showthread.php?t=16100
It looks like it could be a fairly successful conversion but is a way too much engine for 'Maxes.
Regards,
Joe

http://www.ultralightflyer.com/EAA_airventure_2005/yamaha-genesis_extreme.html
This is the link where I read about the Yamaha 4 stroke. Hope it helps.Mark