Okay, but just for the sake of argument, My wife sews all the time and controls the speed with a foot pedal. I drive a car, more complicated than scrolling, I control the speed with a foot pedal. I am one who really would like to be able to control the speed of my saw with a foot pedal. I do not scroll at the same speed all the time. Different speeds for different parts of scrolling. But I yield to your advice. I do not know enough about motors to mess around with them. But, the speed control of a scroll saw is not part of the motor. It is controlled by a switch outside the motor. You turn a knob, could that not be a push mechanism? Oh, well no matter, back to scrolling.