http://coot-a.freeyellow.com/

5. What sort of engine would be ideal for my COOT?

Franklin, Continental or Lycoming engines (int that order of preference) are fine, provided their horsepower exceeds 180 and they are  fitted with a constand speed (variable-pitch) props. Everyone moans (including me) about their high cost, but most automotive engines just don't have as much power and reliability. A possible exception is the rotary engine. Two COOT's have flown successfully with Mazda engines, but no other automotive engines have been successfully applied as of 1999.


 
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