Originally Posted by
Bigbus
Can I assume that you don't have hi and lo stops to set with the electronic setup?
Di2 has the same H,L stops as the mechanical derailleurs.
But by pushing the RD Capacity over the spec's, lack of chain tension can become an issue.
Di2 full sync stops me reaching the 34t - 11t combo, so no problem there
But the 50t - 11t combo + a good bump + light pedaling and the chain has jumped into the gap beyond the 11t cog.
Barry
OH, and I do know a bent hanger can also be a cause, so I've accurately reset the alignment.
I don't think the bozo that installed the new hanger
(me) ever aligned it from new.