Jeff Liebermann wrote in message
...
I've been volunteered to resurrect a Gerard A75 turntable and a Sony
250 reel to reel tape deck.
Both the turntable and tape recorder have rubber idler wheels that
have turned hard as a rock. Is it possible to soften the rubber with
some chemical?
In the 1960's I would just replace the rubber parts, so this was not
an issue. Now, I have to work with what's in front of me. Worse, I
have one shot to get it right and can't really risk a failed
experiment.
I've applied No-Slip goop to the outside of the idlers, which works
for a few hours and then starts to slip. That's not going to work.
I also have a bottle of foul smelling Methyl Prapasol Acetate, which I
use to clean and soften rubber parts in laser printers. It works well
for printers. However, my experience with the stuff on really old
rubber parts (over about 10-15 years) is that the rubber just
crumbles. I don't want to risk it.
Duz anyone have a better potion, elixer, process, or incantation for
softening rubber idler wheels?
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# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831-336-2558
# http://802.11junk.com
# http://www.LearnByDestroying.com AE6KS
A better description ,dimensions etc would help.
If they are the thin metal discs with rubber at the periphery of the rim
and returning over the disc, both sides, a few mm, then I have a fudge for
those.
Otherwise O rings are useful, don't usaually need to be flat , to work
--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/