14-01-2014, 12:59
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no bag, vex only, final destination
AKA: Pinecone
 FRC #0228 (GUS Robotics); FRC #2170 (Titanium Tomahawks) Team Role: Mentor
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Join Date: Dec 2008
Rookie Year: 2006
Location: Glastonbury, CT
Posts: 7,675
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Re: Applying the JVN calculator using multiple motors and Mecanum
Quote:
Originally Posted by Nemo
One can put, for example, an 11 tooth pinion on the Mini-CIM and a 12 tooth on the CIM to even out the speeds a bit. Then you have to adjust for that in the math before you combine them. If you're saying the pinion gear is a 12 tooth in your gear ratio math, Multiply the Mini-CIM's stall torque by 12/11 and its free speed by 11/12 before combining them with the CIM stall torque and free speed.
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From my experience, the motors actually seem to run a bit better with the same pinion on each motor. Matching the free speeds is less essential than common wisdom would have you believe - at operating speeds / torques the motors match quite well with the same gear ratio.
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