Clamp On Front Derailleur Carbon Frame

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Clamp on front derailleur carbon frame.

You could measure the tube with a caliper to see if it is 34 9 or a hair larger. That said as a framebuilder who used to subsist on doing a lot of repairs on steel frames i have dealt with seat tubes that were cracked at the front derailleur braze on. 5of 5stars average 2reviews choose from 3 options. All parlee frame sets use 34 9mm clamps.

Your torque wrench may have been on spec it is possible that the tube is slightly oversized where the derailleur clamps at. On carbon frames tube spec generally seem to run big rather than small once you figure in the clearcoat. Sizes available are 28 6mm 31 8mm and 34 9mm. Fiber grip or a similar assembly compound helps increase grip under lower torque but this does nothing to prevent you from over tightening the bolt and crimping the tube.

There s no need to treat the underlying carbon before installing a clamp on front derailer. Unique 1 bolt carbon design won t dent or scratch frames. Our front derailleur clamp have been designed particularly with the weight conscious rider in mind. Easiest option is the clamp you could use a copper pipe or similar to maintain the structural integrity of the carbon tube to avoid over tightening it of the right diameter.

The clamp has no moving parts or pivots that can damage lightweight carbon fiber titanium or aluminum seat tubes. Parlee carbon front der braze on adaptor 28 6mm. Traditional steel alloy front derailleur clamps look clumsy and weigh a lot more than what they need to. Our 1 piece carbon construction cuts material to an absolute minimum with a very simple understated design.