27 Sep
2007
27 Sep
'07
3:36 p.m.
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