Hi, Ralph,
I realize that there would have to be gear reduction to at least a 2500 RPM spindle speed (assuming the desire to duplicate the original mini-lathe speed), but what I was speculating about was whether a Brushless DC motor, geared to 2500 RPM, would produce the same torque as a brushed DC motor geared to 1250 RPM.? I don't know; I have no experience with BLDC motors in lathes.? But the fact it they are used in the LMS lathes, which are quite nice in my view, would make me seriously consider them without a two-speed gearbox.
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Regards,
Charlie
New Jersey, USA
