Re: [CAD_CAM_EDM_DRO] is 210 oz/in way overkill for a Sherline

In a message dated 27-Nov-01 23:45:59 Central Standard Time, mszollar@...
writes:

> ? Is there any truth to being 210 vs. 155, vs.
> 110, vs. 60?
>

Ken: I am not sure what your question is, here. I built a couple of
home-brew CNC lathes in '78 and '84, both with Size-34 "unipolar" Sup.Elec.
steppers, and they were "OK", but one had to "learn how to limit what was
demanded of them". Then, a year back, I built a third, exactly the same,
except with "same-size" bipolar Size-34 S.E. motors (and THEIR
driver/power-supply), and the result is FAR more torque, fewer "missed steps"
or "phantom -"where did THAT come from?"" steps, etc. I am too ignernt to
know why. It's just better! These new "same size" motors have about twice
the torque as the ones I previously used. Jan Rowland



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