Originally Posted by
silvalis
does anyone know what is the largest pinion that can be used with the xray 78t spur? Any chance of fitting a 46t?
Since I had asked how much range the motor mount had as well, I finally tested it.
It can vary a couple of teeth depending on the motor width (they vary slightly) as well as the position of the axle in the right height carriers, but:
Min = 105 teeth (Pinion + Spur)
Max = 132 teeth (Pinion + Spur)
For example, with my 71 Spur the smallest pinion I could use was a 34 tooth, and the largest was a 61.
Long asnwer, but your 78T spur + 46T pinion = 122 total teeth should fit fine.