Built the grinder, need the motor. I have a couple of motors but they both are single phase and use the centrifugal clutch so I cant change the speed even with a vfd. Now I am shopping for a new motor but not sure what I need. I am thinking 1 1/2 to 2 hp but what type of motor works with a vfd or even a "old style" fan dimmer switch? I really want the speed to be adjustable as I am also making Dancon's small wheel set and don't want to be frying the bearings quickly. I had considered a drill press style pulley system but the time I am done it would be similar cost to a new motor with vfd. Any thoughts?