vac tubes / was Re: Schematics of Atanasoff-Berry
ethan.dicks at usap.gov
Fri Sep 5 07:00:21 CDT 2008
On Fri, Sep 05, 2008 at 12:19:33PM +0100, Gordon J. C. Pearce wrote:
> On Thu, 2008-09-04 at 17:16 -0400, Patrick Finnegan wrote:
> > They're about the only company I know of that takes a 1900lb rack of
> > machines, and then puts another 200lbs of steel plates on the bottom to
> > add weight. (IBM SP frames)
> > Now that I think about it, I'm surprised that I don't yet have a bad
> > back thanks to my IBM gear.
> Of course, having 100kg of ballast in the bottom does give you the
> rather handy feature of making the rack not tip over and kill you when
> you pull a machine at the top...
I've seen plenty of DEC cabinets with a couple hundred pounds of
counterweight in the bottom _plus_ anti-tip feet. Fortunately, I've
never had the pleasure of one tipping over on me, so I can understand
why they do it.
The closest I've personally experienced was trying to extract an 11/750
out of a minivan solo. I managed not to crush me or crunch the CPU, but
it was tough.
I _really_ don't want an SA482 cab falling on top of me.
Ethan Dicks, A-333-S Current South Pole Weather at 5-Sep-2008 at 11:50 Z
South Pole Station
PSC 468 Box 400 Temp -34.1 F (-36.7 C) Windchill -66.4 F (-54.7 C)
APO AP 96598 Wind 17.0 kts Grid 7 Barometer 672.1 mb (10928 ft)
Ethan.Dicks at usap.gov http://penguincentral.com/penguincentral.html
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