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Originally Posted by Dr.Bot
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Also, I was always taught that belts are fairly inefficient as a method for transferring power, especially for a vehicle. Maybe FIRST got all these motors
because they were recalled! 
But that aside, they look like they can do some heavy lifting. Gear these babies right, and you'll be able to launch your entire robot through the center goal. |
1. Timing belts have
no slip and are very efficient, quiet way to transfer power. They don't stretch either so they transfer shocks even more efficiently than chain - which is a design consideration - you might need torque limiters, for example.
2. The large CIMs have less overall output power than the small CIM, look elsewhere in this forum for details. Their main attribute is 1/2 the shaft speed and probably a much higher sustained output before overheating.