Washing machine drives, was Re: BA123's as furniture. . .
caveguy at sbcglobal.net
Sat May 23 08:46:59 CDT 2009
On Fri, 22 May 2009 15:14:19 -0500 (CDT), Doc wrote:
>> So has anybody come across any plausible stories about having to clean
>> washing detergent out of free-standing pack-based disk drives?
> No, but I thought I was going to have to pay for laundering my
>neighbor's pants, the first time he heard an RA60 spin up.
> He was appropriately awed at the size of the 11/84, the RA60, and the
>drive packs, and interested as hell watching me load the pack and start
> When the RA60 started spooling up he started looking at it sort of
>funny (they wind up like a jet turbine if you never heard one). When
>the heads unlocked, he made the other end of the garage in one jump. :-)
Many years ago while on a service call at the Detroit Free Press, I witnessed a head crash
on the composing room system, the drive spun up, the heads unlocked, than there was a big Boom
when the pack turned to a large cloud of dust and set off the Halon system.
Luck for me I was around the corner working on an Autocon scanner and outside of the blast.
After that I always took a few steps back when one spun up near me.
This earned me some strangs looks from time to time.
I would respond to these looks with the questions, Have you ever seen a pack blow up?
I have and was very happy I was not standing close to it at the time !
Many years later when I tried to put too much horsepower through a clutch, and it blewup at about 8k rpm.
When asked what it was like, I said it went off like a head crash on an old washing machine style disk rive.
Very few had any idea what I was talking about.
But they are the two bigest booms, I have ever seen that only involved kenitic energy with no oxidizer or
combustion to assist.
The other Bob
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