Gallery, Projects and General > How do I??

MC-60 PWM Controller Modifications

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RKernell:
Stumbled onto these postings gathering data to use to drive a spindle drive for a Taig mill and another for a Taig lathe. Have the controllers proven to be good choses?

Chuck in E. TN:
Mine is still running my X2 with no problems. I have a second identical set up on an arbor with wire wheels.
Chuck

Brass_Machine:

--- Quote from: Chuck in E. TN on April 07, 2013, 07:47:35 AM ---Mine is still running my X2 with no problems. I have a second identical set up on an arbor with wire wheels.
Chuck

--- End quote ---

Hi Chuck,

Could you do a little bit of a write up? I am interested in doing this to my X2 as well, but am unsure as to which treadmill motor to buy, what to use as a controller etc...

Thanks
Eric

Chuck in E. TN:
My experience with treadmill motors is purely the luck of the draw and what is available from Freecycle.Anytime a treadmill comes up on one of the local Freecycle groups, I try to get it.
I have collected about 6 of them. I have 5 that had DC motors and controllers. All the motors worked, but 2 had controllers that were damaged.
One had an AC motor and a variable pitch pulley that was mechanically controlled by a crank mechanism that changed the drive belt tension which allowed the spring loaded variable pitch pulley operate.
The best dc controller of the bunch I have is the venerable MC-60. It is small, contained with it's own heat sink, and has spayed connectors for easy re-wiring. The motors associated with thees controllers were just a bit bigger than the original X2 motor, and rated 2 1/2 hp.
I'm currently on the road visiting family and fishing my way across Upstate N. Y. so I can't take pictures of my set ups, but will try to remember to do so when I return to Tennessee the end of the month.
I'll search my laptop and Photobucket to see if I have any pictures with me, and post them later today.
Chuck

andyf:
Chuck, it might be an idea to leave a short-duration soft start on it. Otherwise, if you press start with the speed control already wound up to a highish setting, the initial inrush of current might fry the controller.

I put a 2HP treadmill motor on my milling machine, using a KB controller, and have set the "Accel" pot so it takes the motor a second or so to get up to speed. As it takes me at least that long to work out which handle to turn and in which direction, no time is really lost.

Andy

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