There is a Simplex front derailleur braze-on fitting that looks like an H2O boss, except I think it's 6mm. Not sure if other French makers used the same format. See the fourth picture from the top here:
http://www.gitaneusa.com/
This has definitely been discussed on the list. Try the archives with simplex and braze-on as search terms.
Best,
Kerrigan Bennett Pleasant Hill, California USA
Archive-URL: http://search.bikelist.org/
Ahoy !
Thankfully, a list member alerted me to a difference between (among ?) Fren ch and Italian braze-on configurations for the front derailleur. I am assum ing the difference is substantial enough to prohibit mix-match of braze-on derailleurs to frames; hence, the alert. I assume also, that builders such as Hearse and Singer may have used custom fitments.
Can anyone explain the difference or point me toward photographs of the Fre nch braze-on fitment ?
All of this because I am seeking braze-on fronts.
Thank you.
Regards,
Richard Cielec
Chicago, Illinois; U.S.A.=0A=0A=0A