Originally Posted by
NiMo
0.4 and 64 are the same (or as good as)
Now that it has run in the dry, I have been able to settled on a 31 pinion (64p) and the 64 spur (0.4) gearing, and there are no meshing problems mixing the 0.4 and the 64 pitch gears.
you ended up with a 31 pinion and 104 spur for the 13.5 brushless motor?