Fisher-Price 00968-9012 motor pinion

[Superstitions]

Hi. The FP gearboxes are metric ie Module. The small pinion on the F-P motor itself is 0.8 Module and it is a 20 degree pressure angle. These calculate out to american 31.75dp. Meshing the F-P motor and native 0.8module pinion with a standard 32dp off the shelf gear from the good 'ol USA is ok for our robot applications. We have done it for two years now and even under a high load they always held up for arms, turrets, transmissions, etc. We cut the gears ourselves. However if you were designing a transmission that will go several billion revs and needed to be ultra-quiet you would obviously mate the pinion with a true Metric gear.
Jeff- team gearcutter