"Buerste" wrote in message
...
Imagine a simple fractional hp DC gearmotor with a torque limiter or
torque limiting clutch that powers a small machine at 60 or so RPM. Lets
say the machine jams and the torque limiting device kicks out. How can I
cheaply, easily sense this condition and turn off the motor?

This is a personal project and when I get it running it will amaze and
astound!

We had a machine at work where the motor was mounted to allow it to rotate
against a spring. There was an adjustable limit switch so that at a certain
torque, the spring would compress far enough to trip the switch and stop the
motor. Simple and cheap.

RogerN