With anymore teeth on the pinion I am getting thermal shutdown on the speed control. Due to dirt causing havoc with the belts, most of the openings have to be blocked off. Something to remember is that the 4 star revs to 61k while most others rev only to 45 to 55k. More gear can be used as the track loosens up but to keep the car consistant I stay with the wet track setup. When I use a 9 turn Checkpoint and a VFS-1 I usually use a 13 or 14 pinion and the motor comes off at about 190F. This seems to be the norm at our track with the BX.
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