The 11-speed Dura-Ace rear derailleur has been redesigned for lighter operation with the help of new low-friction polymer-coated cables. Shifting effort is now more even across the range, with similar force required at both ends of the cassette.
Rated 2 out of 5 by Cervelo Shimano 11 speed - not very strong!
My first rear mech lasted 3 months, purchased another to keep me cycling and that one has the same issue after 5 months!
I don't know what isn't strong enough, but the alignment goes (its not the hanger, or worn jockey wheels!) on the tension jockey so the chain runs along side the wheel and the cage.
A new item solves the problem (until next time....)
Have no options now, purchased my third Shimano Dura Ace 9000 rear mech!!
Try another 11 speed setup rather than this!
01 October 2013