Originally Posted by tom_chang79

Oops, I made an error, my Spur/Pinion is:

100/47 (64 pitch). The 50 WOULD NOT fit in there. Even with the 47, I had to snip a small piece of the chassis (the portion of the chassis right where the pinion hits near the motor mount screw, that little corner)

Yeah, I think I'm going to start bringing down the FDR...

The TA05v2's ratio is

(37T big pulley with 18T little pulley) = 2.056


So

2.13 * 2.06 = 4.39

Hmm I guess I should bring it down to 4... Which is a 91T spur with a 47T pinion...


With a 47-tooth pinion, did you find yourself having to use a button-head motor screw instead of a socket-head? The pinion gear would hit the socket-head... So I swapped it with a button-head, 3x6mm stainless screw...