I've used plumber's tape (teflon tape) on bottom bracket threads. The bott om bracket threads on my '52 Claud butler are worn so badly that the cups w ouldn't stay tight otherwise. It currently has Italian threaded cups with teflon tape and the cups have stayed tight.
Paul Patzkowsky
Longmont, Colorado> Date: Wed, 16 Jul 2008 08:42:18 +0000> From: hughwt
hornton@yahoo.co.uk> Subject: Re: [CR]Have any of you actually tried plumbe
r's tape?> To: Classicrendezvous@bikelist.org> > Perhaps I am being obtuse
, but why would anyone want to use plumbers' tape > on bottom bracket thr
eads. Plumbers' tape is for stopping leaks throu> gh threads: bottom brack
ets don't leak through the threads. If it is > an attempt to stop the cups
seizing, there are purpose-made compounds that > will do the job better.
If it is an attempt to fill the gap in sloppy> threads, I would have th
ought that some hardening thread compounds would d> o that job better too
, pending a proper repair job on the bracket.> > Hugh Thornton> Cheshire
, England> > --- On Wed, 16/7/08, Mark Fulton <markfulton5@mac.com> w
rote:> > From: Mark Fulton <markfulton5@mac.com>> Subject: [CR]Have any of
you actually tried plumber's tape?> To: "CR List" <Classicrendezvous@bikeli
st.org>> Date: Wednesday, 16 July, 2008, 8:30 AM> > In the June 2 iss
ue of VeloNews Tech Talk, Lennard suggests using > plumber's tape on bott
om bracket bracket threads. I've used> plumber's > tape on the hydraulic fi
ttings when I was installing braided brake > lines on my racing motorcycles
, and once when I was installing a new > gas range. But both of those app
lications utilize pipe fittings. > They're tapered so initially there's a l
arger space between the > threads of the two elements. That space gets smal
ler as the fittings > are tightened. In these two examples, the plumber's
tape is effective > in preventing the escape of a fluid and a gas. Bottom
bracket threads > are parallel, the space between male and female threads
is literally > microscopic. I can't see how you could even start the the t
hreading > with plumbers tape wrapped around the cup threads. Tell me I'm w
rong > and I'll try plumber's tape on my next bottom bracket installation.
> That'll be this weekend.> > Mark Fulton> Redwood City> California> USA> >
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