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Re: Help with gear ratio
well you have your unit conversion a little technically wrong. it should go like this:
1.04666 ft * 5000 rpm = 5233 ft/min
5233 ft/min * (1 min/60 sec) = 87.2222 ft/sec
Otherwise your math is correct. a 4" diameter wheel on a CIM WOULD run that fast. 5000 rpm is ridiculously fast, after all. The real point is that running something straight of the CIM means it puts out very little torque. with a 4" wheel, you could stall the motor with your pinky finger. This is why all CIM drivetrains have gear systems.
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