Re: Controllable torque electric motor questions

Tim Wescott writes:

If nothing's moving then frictional loss is by definition zero.

True, but if your mechanism is designed to not move you need neither
motor nor gearbox.

The point is, the *stall* torque developed at slow speeds isn't affected by
friction. As a linear instead of rotational example, air cylinders develop
force = area x pressure, without regard to friction.
.

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