I have installed a new di2 group set. When I was doing the minor front and rear derauiller adjustments the chain started to jump on the front chain ring, and despite trying to make adjustments back on the derauillers, it has not yet been fixed. The chain was not jumping prior to the minor adjustments.

Here is a video. How do I fix this? Thanks The chain was not jumping prior to the minor adjustments.

New ultegra di2 12 speed- chain jumping on front chain ring
byu/typerlover inbikewrench



by typerlover

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  1. Seems to be happening once every chain revolution. This is almost certainly the quicklink not being seated properly so it’s not interfacing with the chainring teeth properly. Look at where it starts to hover over the teeth and that’ll be your problem area

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