Originally Posted by
QuiltMom2
Interesting machine you got there! I 'm amazed at the drive belts.
The two belts multiply the force of the motor. I don't know by what factor, but if you still have your high-school physics notes or texts around, I expect the force multiplier can be calculated. These machines have 1.0 or 1.2 amp motors and with the double pulley system they have the power to sew through just about anything, and all the while maintaining superb control at low speeds. Kenmore made brilliant machines in those years.