Originally Posted by
5italkart
once again matt makes a good find SERVO CITY has nice gears but if you use there chart my spur does not fit, I have 61 tooth 2.620 OD are we not 32 pitch? also found a place called rapid gears if some one can send a sample we may be in luck
I'll check out the Servocity and rapid gears.
32 pitch is what was used in early 1/12 (Jerobee and all) and some nitro 1/10 stuff, RC 10GT etc.
If you multiply the number of teeth by the pitch you get the pitch diameter (about half way between the OD and root of the teeth. So 2.620 OD minus
.100" (about the difference in dia between OD and PD as measured on an Associated gear) is 2.520 x 32 would be about 80 teeth. 2.520 x 24 would be around 60 teeth, much closer
