
31-10-2005, 19:11
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Curmudgeon
 FRC #0116 (Epsilon Delta)
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Join Date: Jun 2001
Rookie Year: 1996
Location: Herndon, VA
Posts: 3,176
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Re: Motor Bias
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Originally Posted by gshosford
With the joystick in the full forward position, the right motor, for sake of explanation, was turning faster than the left motor. With the joystick in the full reverse position, the left motor was turning faster than the right motor.
This surprised both of us that were working on it because all the discussions state that the CIM has virtually no bias.
The observations were visual not audible. We could see that one motor was turning much faster than the other motor.
Mike Betts' response with the link to the free-speed data was helpful. Does anyone have the stall torque data?
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According to the CIM Motor Spec Sheet from the 2005 FIRST Spec Sheet List, the CIM motor stall torque is 343 oz-in at 12volts. 12 volt free speed is 5310 rpm (+/- 10%)
-dave
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