28 Feb
1999
28 Feb
'99
11:43 p.m.
My understanding is that in the case of HP card readers, there is a small
silicone roller/wheel, which oxidises. Can anyone confirm oxidised silicone
is "gooey" :) ? In any case, the roller can be replaced by a piece of
appropriateley sized nylon tubing cut to size. I just so happen to have
about 1m length of this tubing, which I will happily share out pieces of to
those in need, for the cost of postage.
Cheers
A
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-----Original Message-----
From: CLASSICCMP-owner(a)u.washington.edu
[mailto:CLASSICCMP-owner@u.washington.edu]On Behalf Of Joe
Sent: Monday, March 01, 1999 8:09 PM
To: Discussion re-collecting of classic computers
Subject: Re: Gooey rubber bits
At 08:13 PM 3/1/99 +1100, you wrote:
Marvin wrote with respect to a HP85:
like
this.
print each iteration of the program. The tape
drive roller is gooey
although it is still round at this point :).
I've often see rubber items on old printers and stuff go "gooey" Does anyone understand why this happens and
whether it is reversible?
Sometimes in 2 different examples of the same machine, one has
the problem
and the other hasn't.
Hans,
I don't know what causes the "rubber" to turn gooy but I know
it's common
for the drive wheels in ALL of the HP tapes and mag card drives to turn
gooy with age. I took a HP 7912 tape drive apart last week and
the "rubber"
had liquified and actually dripped into the other parts of the tape drive
sort of like paint. The HP-85 belts are made of a different
material, they
don't turn gooy but just fall apart with age.
My $.02 worth,
Joe