PDP 11 - how to lock heads in a rx01 and rx02 - seeking advice

Paul Birkel pbirkel at gmail.com
Sun Jul 12 02:24:59 CDT 2015

Note that the bracket should already be there; just loosen the screw,
rotate the plate 90 degrees to block the positioner-mount, and then tighten
the screw again.  I *think* that the bottom drive-retention screws are
interchangeable with screws on the back-panel, and a typical approach is to
remove a pairs of screws from the back panel for temporary reuse to
stabilize the motor, then return to their former locations after re-racking.

On Sat, Jul 11, 2015 at 11:30 AM, Jay Jaeger <cube1 at charter.net> wrote:

> The RL01/RL02 Users Guide (bitsavers.org/pdf/dec/disc/rl01_rl02) Figure
> 2-25 on page 2.35 describes the positioner restraining bracket that
> should be put in place before shipping.  It is just a little square
> piece of metal (probably aluminum) with a single screw that holds it
> down that sits in front of the carriage to keep it from rolling into the
> pack area.
> Of course, you don't want a pack in there while you are moving it
> around.  :)
> It also mentions on that page a couple of shipping screws on the bottom
> of the drive to restrain the spindle/blower motor from turning.
> On 7/10/2015 11:11 PM, devin davison wrote:
> > I made a mistake. I was reading about the floppy drive and accidentally
> > mentioned the rx01 / rx02. The hardware to be moved is actually RL01/RL02
> > hard drives, not the floppy drive. Please forgive the mix up, any help is
> > appreciated.
> >

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