RE: [CAD_CAM_EDM_DRO] 8" Floppy Drive Motor question

Ah, yes they were. For the price of one of those original drives back in
the early 1980's you can buy an entire system today, brand new! I remember
those well, I have an IMSAI 8080 with one of those monsters.

John Guenther

> -----Original Message-----
> From: Hugh Prescott [mailto:hugh@...]
> Sent: Monday, July 16, 2001 1:06 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: Re: [CAD_CAM_EDM_DRO] 8" Floppy Drive Motor question
>
>
> Greetings
>
> Just looked at some Pertech 8" drives from the orig. Mits Altair and some
> Siemens from old OSI computers.
>
> They appear to have a 4 lead stepper bipolar motor for the heads
> running on
> 24 volts
>
> The Siemens motors are made by Singer. The lable is mounted
> against the PCB
> so I can not read it with put disassembly. The spindle motor is a 115 VAC
> sync motor with cap.
>
> Yes daughter, these were considered state of the art high density storage
> when your dad got into computers.
>
> Hugh
> ----- Original Message -----
> From: <cadcamcenter@...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Monday, July 16, 2001 11:34 AM
> Subject: [CAD_CAM_EDM_DRO] 8" Floppy Drive Motor question
>
>
> > Alan Trest wrote: "Anyone know what type of motors are in old 8"
> > floppy drives."
> >
> > Jon Elson: "All sorts. I've seen AC induction motors, DC brush, DC
> > brushless. Just about any kind of motor you can imagine......Without
> > knowing what you want to do with it, I can't offer much help. They
> > won't be of much use in a machine tool, unless it was micro-sized."
> >
> > Is the Unimat I (Unimat Classic) micro- enough?
> >
> > Peter
> >
> >
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