Quote:
Originally Posted by wilderbuchanan
i'm confused because the planetary gearbox reductions is 71:1
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Yes so the motor inputs about 5,700 revolutions per minute (due to the gearbox efficiency it is more like 5,300 RPM), and after the 3 stage planetary reduction it is about 75 RPM. You can multiply the 75 RPM output speed by the 71:1 reduction and get 5,325 RPM. This is the motor speed even with the reduction with no load.