Fisher-Price 00968-9012 motor pinion

[Joe_P]

Does anybody have information on the 19T pinion gear that comes on the Fisher Price motor in the kit?
I think it has a 32 PD and a 20 degree pressure angle???

Thanks in advance

Joe P

[Veselin_Kolev]

Yes, in the history of the FP motors, they’ve generally been 32 pitch 20* pressure angle. The only variance has been no. of teeth.

[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

[AdamHeard]

@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

For reference; If you need a true 32DP gear for the FP motor, the sun gear for the AM planetary is a nice fit. It is ready to press onto a FP shaft and is 15T 32DP.