28 Feb
1999
28 Feb
'99
7:13 p.m.
Marvin wrote with respect to a HP85:
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" like this.
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.
My apologies if this has been discussed before. I missed it.
Hans Olminkhof
28 Feb
28 Feb
7:27 p.m.
On Mon, 1 Mar 1999, Olminkhof wrote:
I've often see rubber items on old printers and
stuff go "gooey" like this.
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.
I don't know the exact chemical reactions, but it has to do with the type
of rubber used:
natural rubber + O2 -> goo
foam rubber + O2 -> dust
synthetic rubber + O2 -> harder synthetic rubber
or something like that....
Almost all rubber I've encountered in HP equipment has turned to goo.
The rubber heathkit used in the lid of the H8 and the H11 also goes gooey.
One of the oldest pieces of equipment I have, a Friden Flexowriter, seems
to have survived well except for the rubber that was used on the AC cord.
-- Doug
1 Mar
1 Mar
1:12 a.m.
At 04:27 AM 3/1/99 -0500, Doug wrote:
I don't know the exact chemical reactions, but it has to do with the type
of rubber used:
natural rubber + O2 -> goo
foam rubber + O2 -> dust
synthetic rubber + O2 -> harder synthetic rubber
or something like that....
That sounds about right but I think it maybe O3 (ozone) that causes
deterioration. Ozone is generated in many electrical devices especailly by
electrical arcs.
Joe
3:49 a.m.
At 04:27 AM 3/1/99 -0500, Doug wrote:
I don't know the exact chemical reactions, but it
has to do with the type
of rubber used:
natural rubber + O2 -> goo
foam rubber + O2 -> dust
synthetic rubber + O2 -> harder synthetic rubber
or something like that....
Is that really O2 or is it O3 (ie Ozone)?
--Chuck
1:09 a.m.
At 08:13 PM 3/1/99 +1100, you wrote:
Marvin wrote with respect to a HP85:
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
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" like this.
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. 
28 Feb
28 Feb
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
--
adavie(a)mad.scientist.com
visit the Museum of Soviet Calculators at
http://www.comcen.com.au/~adavie/slide/calculator/soviet.html
a Yahoo!, Netscape, Wall Street Journal, Newsweek and New Scientist Cool
Site!?
?
-----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
1 Mar
1 Mar
2:04 a.m.
Andrew,
It's not silicone, it's some type of polyurathane. Yes, they do turn to
goo. They can be fixed, I've fixed hundreds of them. But it's not as easy
as it sounds, there's a lot of specail techniques involved. You need six
hands just getting the HP 41 card reader back together again.
Joe
At 12:43 AM 3/2/99 +1100, you wrote:
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
--
adavie(a)mad.scientist.com
visit the Museum of Soviet Calculators at
http://www.comcen.com.au/~adavie/slide/calculator/soviet.html
a Yahoo!, Netscape, Wall Street Journal, Newsweek and New Scientist Cool
Site!?
?
-----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
4:59 a.m.
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8:44 a.m.
Is 'six' how you write SS0 ?
That how many hands I have (same as most on this list, I guess), and I
had almost no trouble putting the 41 card reader back together...
Are you sure you're talking about the *same* HP-41 card reader as
the rest of us? :-)
I have two hands, but maybe they're all thumbs, because I had a devil of a
time getting the thing together. Maybe you'd care to share your secrets?
9:09 a.m.
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1:03 p.m.
New subject: update on my netiquette goof
Due to my posting the heads-up the other day, and including the phone number
of the seller (we're talking Heathkit items, etc etc), the seller is not
only badgering me about to whom I sent to, he also indicates he now intends
to change his address and/or phone number.
I think this says enough about the guy.
Seeing how he's responded to my actions and full apology, I wouldn't deal
with him now if you PAID me. Sellam, save me!
A
--
adavie(a)mad.scientist.com
visit the Museum of Soviet Calculators at
http://www.comcen.com.au/~adavie/slide/calculator/soviet.html
a Yahoo!, Netscape, Wall Street Journal, Newsweek and New Scientist Cool
Site!?
?
1:43 p.m.
New subject: update on my netiquette goof
On Tue, 2 Mar 1999, Andrew Davie wrote:
Due to my posting the heads-up the other day, and
including the phone number
of the seller (we're talking Heathkit items, etc etc), the seller is not
only badgering me about to whom I sent to, he also indicates he now intends
to change his address and/or phone number.
I think this says enough about the guy.
Seeing how he's responded to my actions and full apology, I wouldn't deal
with him now if you PAID me. Sellam, save me!
There's only one solution for you: change your e-mail address! :)
Well, beware all ye who dare to deal with this guy. Don't say I didn't
warn you.
In the meantime, if he really wants to know everyone who you contacted,
just have Derek do a whois on ClassicCmp and send the list to him. It'll
be fun to see what he sends out to everyone. Ooh! Maybe he'll try to
have us all killed since nobody must know his secret identity!
P.S. I know how you can get rid of him perhaps. It involves some internet
trickery. Contact me privately if interested.
Sellam Alternate e-mail: dastar(a)siconic.com
------------------------------------------------------------------------------
Always hasslin' the man.
Coming in 1999: Vintage Computer Festival 3.0
See http://www.vintage.org/vcf for details!
[Last web site update: 02/15/99]
3:43 p.m.
New subject: update on my netiquette goof
On Mon, 1 Mar 1999, Sellam Ismail wrote:
On Tue, 2 Mar 1999, Andrew Davie wrote:
In the meantime, if he really wants to know everyone who you contacted,
just have Derek do a whois on ClassicCmp and send the list to him. It'll
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
be fun to see what he sends out to everyone. Ooh!
Maybe he'll try to
/curmudgeon/
No, no, no!!! Anything sent to this individual for whatever
reason had bloody better well *not* include my e-mail address, nor
should the aforementioned addy be sent >anywhere< without my (at least)
being asked, thank you all very much indeed.
Harrumph! Snorzle rumple errfle mmrs zzmmm .......
/curmudgeon off/
I want nothing to do with this, and besides I tried once some time
ago to make a deal with this person, and it was not.... successful.
Cheerz
John
3:51 p.m.
New subject: update on my netiquette goof
Correct attribution please: I did NOT write the quoted text. I have enough
problems with this guy as it is!!
?
On Mon, 1 Mar 1999, Sellam Ismail wrote:
A
--
adavie(a)mad.scientist.com
visit the Museum of Soviet Calculators at
http://www.comcen.com.au/~adavie/slide/calculator/soviet.html
a Yahoo!, Netscape, Wall Street Journal, Newsweek and New Scientist Cool
Site!?
On Tue, 2 Mar 1999, Andrew Davie wrote:
In the meantime, if he really wants to know everyone who you contacted,
just have Derek do a whois on ClassicCmp and send the list to
him. It'll
4:02 p.m.
New subject: update on my netiquette goof
John Lawson wrote:
Don't worry... giving a wierdo carte blanche is not on my agenda. :) I'm
not going to do anything remotely like that.
I should point out, however, that your e-mail address is probably publicly
available from the list server. Try sending a message to
listproc(a)u.washington.edu
with any subject, and the command
review classiccmp
at the beginning of the line in the body of the message.
I put in a tab because the stupid software LOOKS INSIDE list traffic for
commands (as some people here already know). They don't do anything except
cause a polite message to land in your mailbox, but it's still annoying.
I think there's an option to only make the subscriber list available to
other subscribers. I'll look into it right now.
On Mon, 1 Mar 1999, Sellam Ismail wrote:
In the
meantime, if he really wants to know everyone who you contacted,
just have Derek do a whois on ClassicCmp and send the list to him. It'll
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> be fun to see what he sends out to everyone. Ooh! Maybe he'll try to Harrumph! Snorzle rumple errfle mmrs zzmmm .......
Hey, how'd you find out about Mrs. Zzmmm? She was my secret computer
supplier! Now I'll have to find a new one.
-- Derek
2 Mar
2 Mar
12:10 a.m.
New subject: update on my netiquette goof
Upon the date 09:43 PM 3/1/99 -0800, John Lawson said something like:
On Mon, 1 Mar 1999, Sellam Ismail wrote:
Absolutely! No address distribution to him. That character we're talking
about seems to have some sort of ego problem and appears to be so totally
greedy that the end result is that he actually presses our buttons which
end up bothering us. 'Control freak' also comes to mind from my own and
other's contacts reported here.
I contacted him 9 - 12 months ago (IIRC) asking prices on a couple of
things. Got back a terse answer with prices that were *way* out of line,
IMO. It was worded to the effect of "either pay my price or go away!" I
sensed right then he was a problem and vowed to myself never to contact him
again.
I still think his saying he's leaving the country is false just to make
folks think he'll make a fast deal to get rid of it. According to comments
on this list: he's been trying to leave the country after over one year?
No, he's likely just full of B. S. and out to make a buck and control the
process his way only.
Never, never give any of our email addresses or other info out without our
express permission. Especially to this guy. If he demanded Andrew to turn
over who he's passed the phone # to, then he does have a problem with
control of his world around him. He temporarily lost control by somebody
inadvertently giving out his # and is a bit vengeful toward the situation
and will attempt to regain it until he cools off.
That's the way I see it. Enough for now as this is getting more off topic.
We just know much better now to avoid his ng postings.
Regards, Chris
-- --
Christian Fandt, Electronic/Electrical Historian
Jamestown, NY USA cfandt(a)netsync.net
Member of Antique Wireless Association
URL: http://www.ggw.org/awa
On Tue, 2 Mar 1999, Andrew Davie wrote:
In the meantime, if he really wants to know everyone who you contacted,
just have Derek do a whois on ClassicCmp and send the list to him. It'll
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
be fun to see what he sends out to everyone.
Ooh! Maybe he'll try to
/curmudgeon/
No, no, no!!! Anything sent to this individual for whatever
reason had bloody better well *not* include my e-mail address, nor
should the aforementioned addy be sent >anywhere< without my (at least)
being asked, thank you all very much indeed.
Harrumph! Snorzle rumple errfle mmrs zzmmm .......
/curmudgeon off/
I want nothing to do with this, and besides I tried once some time
ago to make a deal with this person, and it was not.... successful.
1 Mar
1 Mar
4:56 a.m.
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9427
days inactive
9428
days old
16 comments
11 participants
participants (11)
-
adavie＠mad.scientist.com -
ard＠p850ug1.demon.co.uk -
cfandt＠netsync.net -
cmcmanis＠mcmanis.com -
dastar＠ncal.verio.com -
doug＠blinkenlights.com -
dpeschel＠u.washington.edu -
eric＠brouhaha.com -
jolminkh＠nsw.bigpond.net.au -
jpl15＠netcom.com -
rigdonj＠intellistar.net