2 Jul
2015
2 Jul
'15
4:51 a.m.
Jerry Weiss wrote:
On Jul 1, 2015,
at 3:57 PM, devin davison <lyokoboy0 at gmail.com> wrote:
Ive been trying to get a pdp 11 for quite a few
years now, I recently found
someone selling a 11/34 with related gear in a couple of racks Here in my
state of florida. I jumped at the chance and bought it, i have not found
anything for sale this close to me before, yet alone in my state.
The plan is to go get it all later this week. It is a 11/34 in a rack with
a bunch of related Rl drives and a couple of big reel to reel tape drives.
Not sure the specifics anymore, after I paid him he took down the ad, and i
did not write down the details. What I want to ask is is there anything i
should look out for, any precautions I can take to make sure this all gets
back in one piece? Especially in relation to the RL drives, ive never dealt
with any of this equipment before and am not sure what to expect.
The plan is to rent a uhaul trailer and go over there in a truck, and to
take everything delicately out of the racks and put it into the trailer,
and to put the empty racks into the truck.
Any advice that could help or prepare me for what i should expect to need
to do once i get there would be much appreciated.
In the 80?s my job involved moving a set of 11/34a + 11/23?s cross country each
summer to do research for 8 years and back again. We shipped commercially on
air cushioned vans, but did all the packing ourselves. The less anything moves
or vibrates the better. We left everything in their racks.
Our approach was to disconnect all the cables between major subsystems.
Everything was marked with duplicates on both sides of cables. We
left the cards in the Unibus and QBus, but had padding, covers to
make sure the cards wouldn?t vibrate or fall out. Locking slides on rack mount
devices and heads on drives was of course mandatory. Had big labels attached
to drives and movable parts we had locks on (insert Apollo 13 movie
reference about not jettisoning the LM early).
Then a heavy layer of packing tape on everything that might move or vibrate.
Heaviest components on bottom of all rack. Watch out for tipping and pad with old
blankets. Extra straps in the trucks to make everything immobile.
These days given the age of this gear, you have to be extra careful on the cables,
especially older Unibus BC11A type flat cables. Tough call is on the filters. I?d remove
the filters ahead of time if you can and ship in their own container. If they are
original
they will crumble on touch. Filters and foam pieces will shed particles (or worse).
Whether you leave them in or not, you need to open up everything and clean
before (if you can) and after moving. Disk packs should be in boxes or padded
individually.
Other than a bulb in the head positioner in an RK05 going out, I don?t recall
major problem restoring the systems.
Good luck.
Jerry