Joe and Matt…
Thank you both very much for the analysis above. I learned something from both of these posts.
All,
Adding to their input, here is a general view:
Whenever a motor is being driven over its free speed, it begins to act as a generator. So, in this case, if the AM Planetary motor gets over 4,400 rpm, then the FP motor is a generator. This would only happen if the CIM Motor was also running at 4,400 rpm or above. Since the CIM motor is providing power to a mechanical system (drive base, conveyor, etc.), there are losses in that system. Most FIRST drive bases, if they have low losses, don’t operate at over 80% efficieny (there is usually a 20% loss from the motor to the desired output).
My point is that CIM motors don’t ever run above 80% of their free speed. Most of the time, they are running at a much lower rpm, as was said above.
In my opinion, coupling a CIM motor with a 2006 FP motor (and a 3.67:1 reduction gearbox such as the AM Planetary figures to be a workable solution.
Andy B.