Update on treadmill motor for CNC servo spindle control

My preliminary testing using a Gecko320 and a larger treadmill motor
from Surplus Center 1800 488 3407
Part number 10-1783A
Price about 20.00
there is another motor, identical except for different mounting.
Stated to be "reversible".

Has a stub shaft on the rear for encoder mounting!

This seems to make a great combo for spindles - I'm putting this
on an EMCO/Maier CNC5 (all the original electronics and the original
motor are gone, I'm using CNCPro and a camtronics 2-amp controller
with 120 or so oz-in steppers for the carriage and cross slide).

I'd go for the G340 which has the ability to pulse-multiply. This
becomes important with slower PCs - my P100 laptop will put out
25,000 pulses/sec with CNCPro, but with a 1000-line / 4000 count
per rev encoder, this limits revs very badly.

The motor is rated at 130v max, but for continuous duty at 95V and
18.5A. I'm running downgraded at 30V at the moment, and can't
slow the motor by grabbing a 1-inch diameter coupling on the shaft -
this bodes well for (maybe this weekend) 70-volt operation....

Operation is smooth and silky!

I bought this unit more than a year ago, but just hauled it out
when the servo I bought turned out to be too wimpy for the lathe.
(anyone want a 72 oz-in at 30V/9A servomotor? price negotiable,
well below C&H's 60-80.00 price)

Was glad to see the good one in the brand new Surplus Center catalog!

Buy 'em while you can!

By the way, this is bigger and heaver than what I'd recommend for
mounting on the Sherline without some additional support....
Lathe maybe, not mill....

cheers / mark