Originally Posted by
CarbonJoe
To calculate the equivalent number of teeth in a 64 Pitch gear to 48 Pitch or vice versa, simply divide the number of teeth by its pitch then multiply by the target pitch to obtain the equivalent number of teeth.
Example: 108 Tooth 64 Pitch Spur = 81 Tooth 48 Pitch Spur.
108/64 x 48 = 81
Pardon my ignorance. This will give you the same size spur... Not the same FDR if the pinion stays constant... Or am I wrong??