Thank you sir, for that info., it will take me a little time to get used to the buttons around here. Also someone asked what my next project will be. I have a Lagun mill much like a Bridgeport, that the motor has smoked. To get the motor rewound, the cost is around 6 to 8 hundred and a new one is around a 1000 or higher, so I will try to adapt a treadmill motor to the mill. I have powered many of my machines with these DC variable speed setups and they work well. I just bought an older treadmill yesterday, a Pro-Form, the type with the knob type of speed control instead of the push button type, I prefer the knob over the latter, I feel I have more control. I paid 55 dollars for it, way better than hundreds. My challenge is to install the correct pulleys and make it reversible. DC motors are reversible, but these are meant to turn only in one direction because of the way the flywheel is mounted. They are mounted with a thread, turn it the opposite direction and they will come off, so I will have to install a setscrew to stop that, also to be considered a constant motor and not an intermittent type, fans will have to be installed for cooling. So, this is my new challenge. I will take pictures from start to finish. Robert Brown.