heavy stuff -- was: Anyone want an RK11-C manual?

E. Groenenberg ed at groenenberg.net
Fri Dec 16 14:38:30 CST 2016


Have you tried using a block and tackle to pull the drived up the stairs
using the planks?

Ik email, dus ik besta.
BTC : 1J5fajt8ptyZ2V1YURj3YJZhe5j3fJVSHN

On Fri, December 16, 2016 21:23, Henk Gooijen wrote:
> Van: Tony Duell<mailto:ard.p850ug1 at gmail.com>
> Verzonden: vrijdag 16 december 2016 17:54
> Aan: General Discussion: On-Topic and Off-Topic
> Posts<mailto:cctalk at classiccmp.org>
> Onderwerp: Re: Anyone want an RK11-C manual?
> On Fri, Dec 16, 2016 at 4:31 PM, Henk Gooijen <henk.gooijen at hotmail.com>
> wrote:
>> But I am not giving up hope … I recently acquired something I did not
>> think
>> to be possible to happen … I “picked up” an H960 rack with RP11
>> controller
>> and *three* RP03 disk drives aand 6 packs.  The rack is already moved,
>> the
>> drives are a separate story. Each drive weighs 415 lbs. “So what”
>> you might
>> ask. Well, they are in a cellar and three flights of stairs (10 steps, 6
>> steps,
>> and 4 steps) is too much for 3 strong guys to push one drive up the
>> stairs.
>> We are now looking into another option to get the drives (and a DEC
>> _line_printer, also very very heavy!) up to the first floor …
> Can these units be dismantled without totally losing alignment,etc. At
> least
> remove PSUs, spindle motors, etc. I once moved an RA60 (much lighter,
> but still too heavy for one person to carry easily) downstairs by taking
> it
> almost completely apart. Incidentally, it is surprising how much the PCBs
> in a full cardcage weight, it is often worth pulling them all out.
> I suspect an RP03 dismantled like that would still be too heavy for one
> person
> to move, but with 3 people it might be possible.
> I hope your upstairs floor is strong enough for them... You do not want
> them
> coming back downstairs at 9.81m/s^2
> -tony
> Grin … I don’t plan to check whether Mother Earth’s acceleration is
> still working fine.
> Indeed, the RA60 is heavy. Just like RA81’s, the RA60 is not good for
> your back, but
> the RA60 is worse than the RA81. The RA60 is also “longer” compared to
> the RA81,
> and that does not help either when you hav to move an RA60 around.
> I really do not want to mess with the mechanical construction of the
> entire RP03
> drive. They are too rare. I want to move them “as is”. The only thing
> that can be
> done easily is removing the side panels.
> However, the ceiling in the cellar has an opening although that is
> currently welded
> by a closing lid. The system was installed in the 80ties, and it is not
> remembered
> how the system got into the cellar back then. The system has operated in
> that cellar
> for almost 20 years (PDP-11/40, RP11, Kennedy 9100 – 3 H960 rack
> system).
> I used wooden planks (shelves) laid on the stairs, and then pushed the
> racks up.
> It was heavy, even for 3 strong guys --- OK, 2.5 😊   I removed the
> Kennedy tape
> drive to make the rack less heavy. The rack with the RP11 controller was
> also
> heavy, but I really did not want to pull or dismantle anything of it. We
> got it out
> of the cellar. The 11/40 (the 21” version in BA11-F, IIRC) rack had, to
> my surprise
> an extra BA11-F with its H742 PSU … One H742 PSU is already heavy, so
> two of
> these beast made the rack way too heavy. I ended up with disconnecting
> the
> power harness and move the 11/40 separately. That made it possible to
> move
> the rack upstairs (with sweat and some swearing ^H^H^H^H^H^H^H^H calling
> in the help of some gods 😊
> We did try moving one RP03 by pushing it upstairs using the “planks”
> trick.
> Three guys asking “are we pushing”?  Yes, but the drive did not move
> at all.
> The RP03 is by far the most heavy item I encountered in 20 years!
> We are now looking into the option to hoist the drives via the hatch in
> the
> Ceiling. Needless to say we take all possible precautions – for people
> and for
> RP03’s.
> To be continued,
>   *   Henk, PA8PDP

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