ahoy !
i understand this does not directly address your request for a source of the cables but, i hope, instead may offer some solice should you encounter difficulties.
several years ago when i went on this same steel cable hunt, i was informed by a since forgotten source that ss cable was springy; and, that using the modern cable both at bar ends and rear mech. would provide more positive and secure shifting.
this observation may have been made within a cr list discussion on campag bar end shifters though i don't recall if generally speaking on campag bar ends or an improvement discussion. it may be in the cr archives.
(all the usual disclaimers, caveats and talismans apply of course)
richard cielec
chicago, illinois; u.s.a.
> >From: Carb7008@cs.com
> >Date: 2008/03/31 Mon PM 04:40:31 CDT
> >To: classicrendezvous@bikelist.org
> >Subject: [CR]Bar-End Cable Sheaths
>
> >As I'm converting to bar-end shifters, I went to several LBS looking
> for the
> >metal-(SS?) wound cable sheaths with no luck. They said most folks
> now use
> >regular vinyl-coated derailleur outers. Is there a source for the
> metal ones or
> >have they too gone the way of the Dodo? (also used between stop and
> rear
> >deraill)
> >
> >Jack Romans
> >Sacramento, California
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