If you've ever wondered how to wire a DC treadmill motor to use as a variable speed tool conversion, you might find this video helpful.

Link to Potentiometer:
https://amzn.to/36nACvd

More details on my website:
https://barrysworkshop.com/212/

I salvaged the motor and speed control from a used treadmill. With a small modification, I was able to simplify the electronics for later use as a variable speed conversion for a fixed speed motor power tool.



I removed the bulky control interface and replaced it with a 10K ohm potentiometer.

I also show how you can reverse the direction of the motor and also stop and start the motor without having to constantly adjust the potentiometer.

I posted a followup video that talks about the coil and attempts to see what it does, performance wise:
   • What Does That Treadmill Motor Coil Do?  

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