Motor Size

I tried several motors on my Sherline. I believe anything usnder 100
oz-in is not going to work well for X or Y, and Z seems to need more
like 120 +, unless you use a pulley and belt and get some extra torque.
I tried a couple in the range of 50-80, and tried a couple different
drivers, and no combination worked fast enough.

On the Grizz Ive used some that do not have a spec, or even a nameplate,
but they appear to be 150 oz-in, maybe a bit more. I have them connecetd
with a 2:1 pulley ratio, and they are working OK, but at a max move of
about 10ips. This is slow by CNC standards, but OK to me for a machine
the size of the Grizz.

ron