Re: bridgeport series 1 retrofit

Hey Bob,
Where can I get 1125 oz. NEMA42 steppers for the same deal you
got??????????
E-mail me off-list if they're still available.
I need at least 6.
Thanks, Tim Bostic

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Bob Japundza"
<bjapundza@y...> wrote:

> Hello All,
>
> I've been lurking on this list for sometime now, as I have been
> rebuilding my bridgeport series 1 cnc. I am getting close to the
> stage now that I need to start thinking about the controller. The
> bridgeport came without stepper motors and I got a great deal a
> while back on some new nema42 steppers (1125oz/in, $99.00ea). I am
> planning on using EMC with this setup (I was a unix admin in a
> former life) so I feel comfortable with working with emc being a
> newbie. I have a couple of questions I am hoping someone may answer:
>
> 1. Stupid question: how can I determine if my motors are capable

of

> microstepping? This will obviously determine my choice of drives
> between the G201 or the G210.
>
> 2. Would a 77vdc power supply with some large caps on the output
> sufficiently filter out ripple and not damage the Gecko's? I'm
> concerned that my power supply may be a wee bit too close to the

80v

> rating for the Gecko's.
>
> 2. Is it possible to use EMC (or any other cnc package for the
> matter) to drive steppers with a DRO serving as a closed-loop
> system? Some of the DRO's I've looked at have a RS-232 output, and
> am wondering if there's a 'standard' for DRO outputs so they could
> be integrated in a closed-loop system. I'm thinking of building one
> of Scott Shumate's DRO-350's.
>
> Any help would be greatly appreciated.
>
> Regards, Bob