From what time did they start using front derailleur braze on clamps? Trying to figure out how old a frame is and thought that might say something...
A quick look, finds braze-on derailleurs in mid-Eighties catalogues of Campagnolo and Shimano.
What other braze-on fittings are there?
Is the routing over or under the BB and chainstay?
@kjlem started
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From what time did they start using front derailleur braze on clamps? Trying to figure out how old a frame is and thought that might say something...