Re: [CR] Seized LH cup: How to?

(Example: Framebuilding:Restoration)

From: "Andrew R Stewart" <onetenth@earthlink.net>
To: "paccoastcycles" <paccoastcycles@sbcglobal.net>, "kim klakow" <Akimbo71@gmx.net>, <classicrendezvous@bikelist.org>
References: <733566.90319.qm@web50503.mail.re2.yahoo.com> <20100620162714.39610@gmx.net> <8850619418BF43F5BCC6495549DBD418@ownerd556865ac>
In-Reply-To: <8850619418BF43F5BCC6495549DBD418@ownerd556865ac>
Date: Sun, 20 Jun 2010 14:34:50 -0400
Subject: Re: [CR] Seized LH cup: How to?


Chuck gives good advice. The tool that I have is a Kingsbridge brand. To use remove the other cup, remove the balls and old lube, insert the long side of the tool into the stuck cup (there's a long enough side that sticks out past the shell's other end so the tool's wrench flats can be grabbed). Then depending which way the cup is threaded I clamp either side of the tool in a bench vice and use my 18" crescent wrench with added leverage from a piece of pipe. When you turn the frame it should produce a self tightening torque on the tool. I have come across only a very few cups that I couldn't remove in 35 years. Those few were ground out.

The tool is very simple and would be easy to produce. I would be happy to photo mine and send a link along.


----- Original Message -----
From: paccoastcycles
To: kim klakow
Sent: Sunday, June 20, 2010 1:02 PM
Subject: Re: [CR] Seized LH cup: How to?



> Kim,
>
> If you can get the fixed cup out, there is a tool that is basically a big
> bolt and nut, though they are cylindrical with wrench flats on them so
> they're easier to use. The idea is that the two parts are screwed together
> with the tightening direction going in the direction you need to turn the
> cup. When they are hell for tight, turning the tool will naturally tighten
> and at the same time it will turn the cup. That is, when the gripping
> force of the tool is greater than the hold between the frame and cup.
>
> If that doesn't work for you, after removing the rest of the BB, you could
> take it to a welder and have a lever welded to the cup. The heat of a TIG
> or MIG would possibly help in breaking the bond between the two pieces and
> hopefully not burn the paint.
>
> I hope that's helpful.
>
> Chuck Hoefer
> Pacific Coast Cycles
> Oceanside, Calif
>
>
>
>
>
>
>
>
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> _______________________________________________

Andrew R Stewart
Rochester, NY