Thread: adjustment help
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Old 11-02-16 | 11:07 PM
  #4  
trailflow1
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Joined: Jan 2015
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If you want to try to fix this yourself and save a trip to the LBS. Then watch some Youtube video on how front deraileurs are set up to get a better understanding of how they function. Visual tutorials are much better than text. FD's are not as complicated as they look.

It could be 1 or 2 or 3 things

either

1. The front derailleur is misaligned and the cage is not parallel to the chainring. If so, you'll need to loosen the FD clamp and rotate it. Then re-tighten. Also pay attention to the gap between the tips of the big chainring teeth and the bottom edge of the outer cage. The gap should be around 1-4mm.
Loosening the FD clamp will effect the cable tension, so the cable may also need re-tensioning at the cable fixing bolt afterwards.


2. The inner limit screw (the screw closest to the frame) needs turning outwards (allowing the inner cage to move closer to the frame). If the derailleur cage doesnt move inwards when doing so then its likely a high cable tension issue. If it does move, aim for the gap between the inner cage and chain to be 1mm or less.

3. The cable tension is too high. If you have a inline barrel adjuster on the cable to the front derailleur. Try turning it inwards. Look down at the cage while doing so. Does the inner cage move inwards at the same time ? If yes, adjust so the gap between the inner cage and chain is 1mm or less.

If there is no barrel adjuster. Try adjusting the inner limit screw first.

If that makes no difference then you'll need to loosen the cable fixing bolt (to release the tension on the cable). Adjust the inner limit screw (gap 1mm or less). Then pull the cable with pliers and clamp.


OP , How many miles did you ride on the old chain ? just out of interest

Last edited by trailflow1; 11-02-16 at 11:32 PM.
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