DPittman
Ultra Member
Oh by gosh, I missed that.
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Tool Modifications to my bead roller and shrinker/stretcher.
- Thread starter Bruce Rossiter
- Start date
Tool
Bruce Rossiter
Active Member
Don't know how I missed that. Makes sense then. 1500 RPM motor. I think the treadmills are rated at 6000 RPM.
Bruce Rossiter
Active Member
I've seen some people that have used an electric winch converted.
So working backwards. 755W/HP divided by 6 is 125W divided by 1.65A is about 75V. Odd value. You'd think it would be a 24V motor.
Probably a variable speed drive for my Gingery Lathe or else for the variable speed fan on my foundry furnace. The photos are dated 2003. The encoder was only for speed feedback, not positioning.
I then bought one of the treadmill motor controllers that runs off AC. It works but not at really low speeds. You can start it up at a higher speed and then turn the control to reduce it to slower but not a lot of torque there then.
I just checked and the device I used back then is now discontinued. So probably not even worth spending time on it.
You can buy surplus drives like this:
but they require tachometer feedback.
With LinuxCNC a brushless drive like that can be close loop controlled with LinuxCNC.
DPittman
Ultra Member
Yes I think the tread motor I have now is way overkill. It's a 1500 watt, 4900 rpm. I have seen a small 400 watt treadmill motor that I think would have been ok.