Re: [CAD_CAM_EDM_DRO] Opinions on some stepper motors please?

Drew Rogge wrote:

> There are a bunch of Slo-Syn stepper motors being
> auctioned
> on ebay and it looks like the going rate may be around
> $15.
> The description of the motors is:
>
> from
> http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=352036620
>
> 150 oz in hold unipolar (>200 oz in bipolar)
> 8 wire
> 200 steps per revolution
> 2.2V 4.6A per phase
> NEMA 23 Raised Face with Oversized shaft
> Dual shaft
>
> Can anyone point out anything which might make these
> motors
> such a good deal? The oversized shafts may not be should
> a good thing but for $15 who knows.

I think the problem is that they are a little small for most
interesting applications.
I have a batch of these myself, except not dual shaft, which
does make them a little
more useful.

>
> Also how are 8 wire motors driven?

Any way they want to go? 8 wires is just the most
flexible. Any other scheme has
some of those wires connected together. If you were to
drive them