Does anyone know what pinion I will need for my novak brushless 7.5r with a 81t spur ?
I have been told a 20t with a 81t spur for the 4.5 but I will not be using this at first especialy indoors.
I got some yellow mini spikes yesterday at the regional and was talking to some lads from narrow club. How many holes do I need in the rims with the yellow mini spikes ? I have the foam inserts in also
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