The stock 15/91 gear ratio is perfect for a 5.5 brushless motor.
Seems like what the worlds edition kits were made for.
23 or 24 sounds about right for a 10.5 motor as the higher the number
the bigger the pinion needs to be.
Motor and gearing so far
10.5 23 or 24
5.5 the stock 15 tooth
I imagine if you wanted to run a 17.5 which due to the high rate of torque in a 17.5 you could slap a 29 or 30 tooth on it.
But also you'd have to swap out the spur to the smallest maybe a 72 tooth.
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Associated B44, Tamiya 501x Worlds Edition
Losi XX-4 finished project
TRF 201(coming soon)
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