RCU Forums - View Single Post - Engine for GP Ultimate? OS61FX too much??
Old 12-29-2003 | 01:34 PM
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Iceman1979
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From: Horn Lake, MS
Default RE: Engine for GP Ultimate? OS61FX too much??

I have the GP ultimate and I put the OS 61 in it and it flys pretty good. It won't hover but other than that its great. If you want it to hover put the OS 91 in it. The 91 is just a hair lighter than the 61 and has more power.