Re: [CAD_CAM_EDM_DRO] Prototrak encoder info needed

Hi Jon
I have a few Trak encoders for sale. If you are interested contact me
off-list
mtebob@...

Bob Muse
Machine-Tech Engineering

----- Original Message -----
From: "Jon Anderson" <janders@...>
To: "CAD_CAM_EDM_DRO@onelist.com" <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Saturday, December 08, 2001 4:49 PM
Subject: [CAD_CAM_EDM_DRO] Prototrak encoder info needed


> I was the recipient of a bit of good luck and timing, finding a post on
> another list
> I subscribe to offering a Prototrak control almost complete for $100 in
> the SF bay area less than a day before I was going down. I'm back, with
> the control sitting on the floor. It appears everything is here but the
> encoders. Fellow that scrounged this saw two cables coming out of each
> motor and assumed they were power/encoder. Motors must use a tach, as
> early ProtoTraks used TravDials fitted with rotary encoders for
> position. He didn't pick the encoders out of the pile because he didn't
> realize they were part of the setup.
> So, I really don't think I want to buy new encoders, and I am not yet
> sure SWI is going to be willing to provide the info. Does anyone have an
> older ProtoTrak setup? If so, are there any specs anywhere in your docs
> giving the encoder count and any details on what type of signal the
> encoders output?
> I suspect I will run across a set of these on eBay sooner or later, but
> if I can possibly cobble up an interface to use linear scales, that
> would be cool.
>
> Jon A.
>
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