Re: [CR]Campy #660 braze-on control boss - repair or should I replace?

(Example: Framebuilders:Bernard Carré)

From: "Steve Neago" <questor@cinci.rr.com>
To: <dbilenkey@sympatico.ca>
References: <HBECIOPCNPKEJLCJBKNKMEPFGKAA.dbilenkey@sympatico.ca>
Subject: Re: [CR]Campy #660 braze-on control boss - repair or should I replace?
Date: Tue, 12 Aug 2003 16:12:54 -0400
cc: classicrendezvous <classicrendezvous@bikelist.org>

Hi Dave,

Thanks for the idea, but the wing nut must be inserted firmly into the control boss so there is no slip. I am concerned that the insert springs you suggest will require me to re-drill the hole to accomodate the spring size and that the spring will not allow wing nut to be completely tightened and will cause slip.

Does anyone know if there is a soft-metal insert that can bond to the frame boss so I can re-tap the hole? I think that lead solder is way too soft and will not adhere properly for this...

Regards, Steve Neago
Cincinnati, OH


----- Original Message -----
From: David Bilenkey
To: classicrendezvous@bikelist.org
Sent: Tuesday, August 12, 2003 3:45 PM
Subject: RE: [CR]Campy #660 braze-on control boss - repair or should I


replace?


> Couldn't you repair the threads with a Helicoil? Or is it some obscure
> threading?
>
> http://www.emhart.com/products/helicoil.html
>
> I've used lots of them over the years, on all sorts of things, I think the
> last one was on stripped threads on an early 60's Campy FD cable clamping
> bolt hole.
>
> David Bilenkey
> Ottawa, Ontario, Canada
>
>
> > -----Original Message-----
> > From: classicrendezvous-bounces@bikelist.org
> > [mailto:classicrendezvous-bounces@bikelist.org]On Behalf Of Steve Neago
> > Sent: August 12, 2003 3:38 PM
> > To: classicrendezvous@bikelist.org
> > Subject: [CR]Campy #660 braze-on control boss - repair or should I
> > replace?
> >
> >
> > Hello,
> >
> > I have a Raleigh Team Pro frameset with a Campy #660 control boss
> > that needs minor repair. Apparently, the previous owner managed
> > to strip the threads on the right side control boss by inserting
> > misalligned the #604/1 adjusting wing nut. The result is that
> > the downtube shifter wing nut will screw in, but not tighten
> > properly & causes unwanted gear changes.
> >
> > Do you have any suggestions on how I repair/redo the control boss
> > threads without having to repalce the complete control boss? I
> > can purchase a metric tap set, but the original threads are
> > probably too loose. I do not want to have to glue the adjusting
> > wing nut into the control boss. Also, I prefer not to use
> > handlebar fingertip shifters.
> >
> > Any suggestions?
> >
> > Thanks, Steve Neago
> > Cincinnati, OH