Re: [CAD_CAM_EDM_DRO] STEPPER TORQUE THREAD

I turned a drum 2" in diameter and mounted it on the shaft, then hung
a weight on a string. That allowed measurement of both holding torque
and 'lifting' torque over a reasonable range of movement.

Chris

> Sounds like what we need is a simple way to dyno a stepper. Most of
> us (I think) are using surplus stuff. Alot of my motors don't even have
> nameplates. It is unlikely that I would be able to find manufacturers
> info on my larger motors. I guess I could take a motor of similar size
> and windings and compare. Mikrokinetics.com provides torque curves for
> lots of motor sizes, and all the different wiring schemes, BUT the
> torque curves are calculated using THEIR drivers at THEIR voltages,
> which can be very different from YOUR drivers.
> So if you really want to optimize your system you need to know the
> rough shape of your motor/driver power curve. Anyone got any ideas on a
> simple stepper dyno??
> peace
>
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