PBridge130@aol.com wrote:
>
> I'd like to ask the Francophiles a couple of additional, basic questions
> which relate to the original question about Juilees. My own collection of
> vintage bikes is limited to 70's and later, Campy-style, so I'm a bit vague on
> other dropouts, particularly any esoteric variations.
>
> Are the following statements correct?
>
> --- 60's-early 70's French rear ders had a smooth rear der hanger "bolt"
> which slid into an unthreaded hanger on the frame, or an unthreaded hanger
> plate, and a lock bolt/nut secured the der in place from the back of the hanger.
> ("Simplex-style".)
Simplex and Huret dropouts had an unthreaded, 9mm hole for mounting the
derailleur. This was frequently tapped by the owners to 10x1mm for
threaded derailleur bolts.
> --- Jubilees were made with both Campy-style, and Simplex-style hanger bolts.
Most of Huret's derailleurs shared a common mounting bolt, which was available in a form for either type of dropout. My later DuoPars and Success derailleurs have a hollow, split 10x1mm threaded bolt with a smaller Allen-keyed set screw that threads in from the back to hold it in place:
http://www.os2.dhs.org/
> --- Simplex changed their hanger bolt to Campy-style in the mid- to
> late-70's.
I don't think so. The Gitanes I saw in the early 80's when we were the importer still had the unthreaded 9mm hole. Maybe you're thinking of an end-user tap job?
--
-John Thompson (john@os2.dhs.org)
Appleton WI USA