Originally Posted by
HillRider
Front derailleur clamps and clamp-on adapters for braze-on type derailleurs come in three diameters of 1-1/8" (28.6 mm), 1-1/4" (31.8 mm) and 1-3/8" (34.9 mm) so your frames are one of these three sizes.
I have a very lightly used 105 braze-on 8-speed triple front derailleur intended for a 52/42/30 crank. It's yours for the asking. PM me if you want it
You will need an adapter clamp of the correct diameter but any LBS should have them and Nashbar offers them at a very low cost.
I would just like to publicly give my appreciation to all the forum members who are offering their help on a daily basis to those of us who who don't have all the answers we need to keep us in the saddle, exercising our passion for biking.
In particular, I would like to thank Hillrider, who came to my aid and very generously offered his no-longer-in production FD. I note that he is a frequent contributor in the Bike Forums (as well as on other sites). It is the helpfulness and kindness such as his that make us a (biking) FAMILY.
Many, many thanks to all.