Thread: 15T CIM Shaft Pinion Gear (DeWalt project)
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Unread 07-11-2009, 08:40
Jack Jones Jack Jones is offline
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Re: 15T CIM Shaft Pinion Gear (DeWalt project)
The second stage planet gears in the DeWalt (the longer ones) are the right size to drive the transmission. Just buy an extra tranny and you'll have five to use as pinions. We use them all the time for a FisherPrice hook-up by having the pinion EDMed to 0.127" and press it onto the FP shaft.

I doubt that there would be enough meat on them to EDM them for an 8mm press fit. I guess if I were doing it, I would turn the CIM shaft down enough to press into the gear. But then, I wouldn't be doing it because removing the first stage planets and using a disk to drive the carrier pins is a whole lot easier to do.

BTW: With the first stage left in, you can expect to see 160, 480, and 640 RPM no load output for 1st, 2nd, and 3rd gear. With it removed, you get 480, 1440, and 1920.