To big a difference.
I would check to see if the gear ratio is lower on the output of the $S as compared to the 2 stroke.
If the motor gets max rpm, it probably needs more prop, as is evidence with less fuel burn.
Sounds like the 4 s prop needs more pitch.
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Ooooooooooooole'
Last edited by Bullshipper; 12-05-2007 at 02:46 PM.
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