Alright, I figured out what the problem was. The original spec sheet for the drill motor pinion gear was wrong. FIRST updated the spec sheet several hours after they put up the spec sheets. It would've been helpful if they had put something on their web page about the change.

Anyway, the gear does have 15 teeth (I can count apparently) and is at a 20 degree pressure angle.

Matt

drill specs
 

all those spec sheets are well and good, but what would you operate under for the low setting, seeing as all the spec sheets are for the high setting

Does anyone know the pitch of the gear on the Bosch motor?

Thanks

yep
 

Bosch pinion gear:

15 tooth
0.7 module
20 degree pressure angle
10.5 mm pitch diameter (15 tooth x 0.7)

Andy B.

Thanks,

I wasn't thinking metric here.

Chris M.