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Unread 09-02-2010, 17:48
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Re: Andymark Planetary Transmission...

Quote:
Originally Posted by Damaku250 View Post
Could anyone tell me how to mount a FP motor to the this kind of gearbox? I'm not sure if we're allowed to yank the gear off, and if so, how?
Getting the pinion off a FP is actually pretty simple if you're willing to stoop to the level of pure brute force.

The trick is that the pinion material is actually relatively soft and deformable. So what you want to do is squish the pinion by grabbing it in a vise, arbor press, etc. You just squish the pinion from one direction, then turn it 90 degrees and squish it from the other. This deforms the hole in the pinion enough to make it MUCH easier to remove. You can tell if you're doing it right by looking at the shaft-pinion interface. If you're deforming the pinion, you'll see a small gap develop there.

Note, you must be extremely careful that you're only crushing the pinion and not some part of your motor's frame. Also, this isn't the nicest way in the world to use a vise, so try to pick one that you don't care as much about. Finally, this technique works much better with the 15-tooth pinion than the 19-tooth.
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