Thanks Nick... some folks seem to be under the impression that only one combination will yield the FDR desired.
How bout 226t spur and a 123t pinion? Will that fit? 32 pitch...lol
It's all about the numerical ratios when it comes to FDR but the pitch will determine the actual diameter of the gears, given their tooth count. That's where fitment comes into play. The original suggested gear combo was for 64 pitch not 48 and it was presumed that it was fairly obvious.