• I am going to braze on a front derailleur boss / mount on to my frame ( the seat tube is oversize so I cannot use a clamp on boss ) I have studied the Campagnolo specs for this but they a little hard to make sense of .
    I am thinking of mounting the front derailleur onto the boss ensuring that it is centred, the fit the BB and
    Crankset, using the outer chainring as the reference point , then mark the mounting point for the boss on to the seat tube .

    Any pointers from the experts would be gratefully received .

    Thanks

  • the seat tube is oversize so I cannot use a clamp on boss

    There are more than one size available

  • 38 .5 ?

  • 1x11 is the future

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Advice expert opinion on Positioning a front derailleur braze on mounting boss .

Posted by Avatar for user77460 @user77460

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