Re: Treadmill motors as Servos

Bill, I'm not sure either?

The servo guys say servos are better than steppers. Maybe they're
right. I have no servo experience, but I think someone here has
used them on a big mill. I can't find anything but bits & pieces.
I am tired of lost steps ruining work though, and would like to
know if servos would help or be a whole new set of problems.

John

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Bill Vance <ccq@...> wrote:
>
> I'm not too knowledgeable about treadmill motors, but from what I've
heard,
> this is not do-able. The reason is that the brushes on a treadmill
motor
> come in to the commutator at a slant, or offset, rather then
straight in,
> and thus will work well, but in only one direction, not both.
>
> Bill
>
>
> On Thu Nov 9 17:37:46 2006 kz1927 wrote:
>
> >Thanks Rich!
> >
> >That's a good starting point. I saw(think I saw) where someone
> >used this encoder
> >
>
>http://www.surpluscenter.com/item.asp?UID=3D2006110919282545&item=3D10-1834=
> >&catname=3Delectric%3E
> >
> >and this motor
> >
>
>http://www.surpluscenter.com/item.asp?UID=3D2006110919282545&item=3D10-1783=
> >&catname=3Delectric
> >
> >but I wasn't clear on how you make it work.
> >I think it was Les Newell on a bridgeport, so it MUST work well
> >if he says it does.
> >
> >Is that all one needs (besides some Gecko's)??
> >
> >Thank you for any help on this.
> >
> >
> >John
> >
> >
> >--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Rich Goldner" <rgoldner@>
> >wrote:
> >>
> >> Try this:
> >>=20
> >> <http://www.truetex.com/servomod.htm>
> >>=20
> >> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "kz1927" <kz1927@> wrote:
> >> >
> >> >=20
> >> > Is there a diagram/parts list of any sort available anywhere
> >> > for using the treadmill motors as servos?
> >> >=20
> >> > I've got a few from surpluscenter.com for use as a spincaster,
> >> > but as I was going through some older posts, I saw where
> >> > some were using them for servos....It just never occured to me.
> >> > I can't find anything to tell me exactly how to put this stuff
> >> > together. I'd like to get some more before it's too late.
> >> >=20
> >> > I haven't tried servos and am in the dark on that.
> >> >=20
> >> > Thanks
> >> > John
>
>
> --
>
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