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Old 09-03-2012 | 06:57 AM
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Scota4570
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From: Salinas, CA
Default RE: Is a 19x8 to much for a 33cc
The 18x6 is making about 1.1 hp at 6500

A 19x6 would probably turn about 5900 rpm

http://personal.osi.hu/fuzesisz/strc_eng/index.htm

The larger prop at a lower rpm, same pitch would be even slower. It sounds like you need a more powerfull engine.
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