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Old 06-09-2005, 12:41 PM
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Default RE: Help with props?

ORIGINAL: flycfii

I'm currently running an O.S. 70 fourstroke with a 13x6 prop, and it runs great. I want to put this motor into a different plane, and I will need to go with a smaller diameter prop because of ground clearance issues. What pitch would I use on an 11" prop to get equivalent performance (or at least close to it)? Thanks in advance.
As far as loading the engine, a 11x10 would put roughly the same load on the engine, but would fly you a lot faster and won't be great for 3D, but for normal flying it should be ok but will be faster than what you have now.