calcomp 8" drive motors available

Paul Anderson useddec at gmail.com
Thu Sep 27 17:36:38 CDT 2007


The Calcomp drives had a cast aluminum frame, while the dec drives are made
from sheets. The DEC RX02 can be used as an 01 or a 02, while the Calcomp
was designed to be an 01 only. Some of the earlier DEC drives were stamped
"RX01 only."

On 9/27/07, J Blaser <oldcpu2 at rogerwilco.org> wrote:
>
> Chuck wrote: > On 26 Sep 2007 at 17:13, Richard wrote:
>
> > > >
> > > > In article <000f01c8008d$38c89f80$6400a8c0 at BILLING>,
> > > >     "Jay West" <jwest at classiccmp.org>  writes:
> > > >
> >
> >> > > > Two drive motors from Calcomp 8" floppy drives are available.
> >>
> > > >
> > > > Calcomp made floppies?!?!  I thought they just made plotters!
> >
>
> > Nope--my first drives were Calcomp 104's.  Miserable things.  I
> > believe they were also the stock drive for the Imsai 8080 floppy box.
>
>
> I just finished resurrecting an old PDP-11/03, racked in some
> old-timer, 1950s-style radio gear cabinet that looks like it
> came right out of an old NWS monitoring station.  Anyway, the
> system has two RX01 subsystems.
>
> As I disassembled everything for thorough cleaning, I, like
> Richard, was a little surprised to see that one drive of each
> RX01 pair was really a CalComp drive.  In both cases the mate
> was a DEC branded drive.
>
> The construction of CalComp and the mated DEC drives are
> essentially identical, with only a few minor changes to some
> of the plastic parts.  I wonder if the CalComp line was actually
> acquired by DEC (or vice-versa?).  These RX01s both date from
> 1978.
>
> - Jared
>
>
>
>



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