Originally Posted by
HarryN
Hey smooth, I switched to a 48P 69t spur and 27t pinion. The motor mounts nice and flush and I still keep my FDR without any shaving anywhere. I am not a big fan of 48p gears, but this will do for now.
I'm running a 100 tooth 64p spur. I can fit anywhere from a 30 to 45 without changing the spur size. To hit your ratio, try a 100/39.