Addenda: French-threaded bosses can also be drilled out and helicoiled to 5mm x .8 for Campy-standard shift levers. The Huret/Simplex boss threading is a similar diameter but coarser pitch--I can measure if anyone wants to know.
David Feldman
Vancouver, WA
> I have a pair of retofrictions on Campy brazeons on my LeJeune (the
brazeons
> were added a few years after purchase). They work fine. I believe there
is
> a small issue with the fixing screws. I think the thread on the fixing
> screws is different between the brazeon version, where the screw thread
> matches Campy brazeon studs, and the clampon version, where the screws
match
> a different thread in the posts which are part of the clamp. This
requires
> a little ingenuity in converting retrofrictions from brazeon to clampon
and
> vice versa. I've converted brazeon to clampon by robbing the clamps,
> including fixing screws, from cheap plastic Simplex Prestige shifters.
> Don't think I've gone the other way, but a Campy or similar fixing screw
> could probably be used to attach retrofrictions to Campy studs. A Campy
> screw might require a washer, as I think the Simplex screw heads are a
> larger diameter than Campy. It may also be that some brazeon
> retrofrictions, especially early ones, may have been made for Simplex or
> Huret brazeon studs and it is possible these had different thread than
Campy
> studs. If this is the case, hopefully the thread was the same as the
> clampon retrofrictions. Ain't French stuff wonderful?
>
> Regards,
>
> Jerry Moos
>
>
> ----- Original Message -----
> From: "Eric Elman" <tr4play@cox.net>
> To: <classicrendezvous@bikelist.org>
> Sent: Sunday, July 28, 2002 5:49 AM
> Subject: [CR]eBay Retro-Friction Simplex Levers
>
>
> > Can someone advise if these 1st generation Simplex retro-friction levers
> > will work on standard shift lever braze-ons or if the bike they are used
> on
> > needs some specific (read "odd" and hard to find) braze just for them?
> >
> > http://ebay.com/
> >
> > Thanks in advance,
> >
> > Eric Elman
> > Somers, CT