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Old 05-03-2015, 03:29 PM
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Originally Posted by aris
I need help.
I just finish assembling my xi sport last week
And i went to the track today for practice. And my xi sport is so slow on the straigh line. My xi sport is all stock. Can someone tell me what pinion gear i should use. Right now i have 25t 48p & spur is 85t. Motor trackstar 21.5t & esc hobbyking.
Thanks
Aris
There's nothing wrong with a 21.5 motor. Your gearing is way off, which is the problem. Get your FDR to between 4.0 and 5.0. And then have your timing set too 30'.

After you do that, let us know how it feels.
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