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Chain jumping off

bikeit65bikeit65 Posts: 950
Out this morning on the bike when changing from the big ring to the small ring in gear 3 or 4 the chain was coming off the bottom jockey wheel, anyone offer any help as to why this is happening, bike has 11 speed Ultegra.
Planet X RT58
Cannondale CAAD 10 2012.
Pain.. Is weakness leaving the body.



  • laurentianlaurentian Posts: 1,897
    I am struggling to envisage the chain "off the bottom jockey wheel" do you have a photo of it "off"?
    Wilier Izoard XP
  • monkimarkmonkimark Posts: 814
    I'm going to hazard a guess at bent/twisted rear mech hanger
  • Stiff chain link?
    Knackered bottom jockey wheel bearing?
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