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Unread 21-01-2012, 21:45
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billbo911 billbo911 is offline
I prefer you give a perfect effort.
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RS-550 and AndyMark am-0928 pinion

We just received our CIM-sim from AndyMark and our RS-550s from Banebots.
The CIM-sim comes with two am-0928 pinions, plus we ordered a spare.

The problem we are having is the id of the pinions is .125" and the od of the RS-550 motor shaft is .125" as well. In fact, we can slide the pinions on and off the shaft by hand with very little force, if any.

This is by no means a shot at AndyMark, it just seems odd to me that the pinions sold with a transmission specifically sold for use with a 550 series motor won't work with it. I placed a call to them this morning, a Saturday, and it has yet to be returned.
So, I'm asking here, how would you go about mounting these pinions to the motor shaft?

Drill and tap for a set screw? (Not my first choice.)
Loctite? (Red maybe.)
???
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