Great Planes 1/4 RV4 GP/EP ARF 70"
06-15-2008, 12:48 PM
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Great Planes 1/4 RV4 GP/EP ARF 70"
Has anyone ever put a Zenoah 20 gas engine in a Great Planes 1/4 RV4 GP/EP ARF 70". It calls for a 15cc size engine and the Zenoah 20 is a 20 cc size. Here is towers page with all the specs. http://www3.towerhobbies.com/cgi-bin...1022&search=Go. I think this would be a great aircraft if I could do this
06-15-2008, 01:30 PM
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RE: Great Planes 1/4 RV4 GP/EP ARF 70"
It'll be about the equivelent of putting a 120 4-stroke on there with an extra 10 oz. of weight. If you make careful selections in the radio gear to keep other weight down and make sure you shift components toward the rear to offset added nose weight, I see no problem with it... you're talking to a guy that has put .46 2-strokes in .20 sized planes though. 
