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Old 07-19-2009 | 12:59 PM
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bonebreak
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From: Moore, OK
Default RE: smaller prop

I have an OS .61fx, and I had a 13x6 on it for 1 flight, then put my 12x6 back on. The engine was able to spin the 12x6 faster, created faster top speed. Both the 12x6 and the 13x6 are props recommended to use by OS.