Quote:
Originally Posted by Jeff Waegelin
I would be cautious about using the long screws in the CIM motors to mount a back plate. Once you take them out, it can be exceedingly hard to get the screws back in, due to all the magnets inside the motor. I've trashed a CIM before doing that, and I know a few other people have done similarly.
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First off I haven't even said that this was the intended method of ataching the back plate but it is one that I have been thinking. I would be more cautious of doing this more because I might have a hard time finding just the right bolt.
I have taken a CIM apart on many occasions in the past to do many things to them (turning the shaft down to mate a pinion gear during the off season) and while the turning the shaft down destroyed the motor getting the bolts back in was extremely easy. It also happens that on our robot this year we had a big CIM that could only be taken out by taking the motor apart (it wasn't a bad design, it was my incompitent machining) and that big CIM still works like a dream.
Quote:
Originally Posted by M. Krass
Out of curiosity, where are you getting the combined spur/ring gear?
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I'm not. I would get a normal gear and a ring gear. I would bore out the normal gear so the ring fits inside and drill holes for pins to transfer the torque. The pieces that hold the ring/spur gear are also pins that could transfer the torque. I would have to try this before actually using it during the season cause it seems a little fishy in terms of actually working.
On a similar note if anybody knows where to get a 20DP, 40 tooth ring gear that would help imensly cause mcmaster doesn't seem to have ring gears and stock drive products doesn't have 20DP gears.
Thanks