Di2 rear derailleur issues

davidmorgandpm-tTrUwc1
davidmorgandpm-tTrUwc1 Posts: 3
in Workshop
Hi
Rear derailleur has been changing fine until I charged the battery,after which the change down (largest cogs to smallest) has become poor,I need to change down 2 cogs for it to change properly .Going back up the cogs seems fine .
Any ideas ,help please.
TIA

Comments

  • trevor.hall12
    trevor.hall12 Posts: 416
    Let me guess cogs 5 to 6 but you need to skip it to 7 to come back up to 6 ,or is it every shift down?
  • davidmorgandpm-tTrUwc1
    davidmorgandpm-tTrUwc1 Posts: 3
    Every shift really ,I have to double tap to go down 2 cogs then come back up one.
    If I tap once to go down one cog it doesn't change just sounds like a badly adjusted manual dderailleurIt sometimes changes after a period of time but far too long than it should be .
  • shirley_basso
    shirley_basso Posts: 6,195
    edited October 2021
    Delete
  • BetterShifting_Terry
    BetterShifting_Terry Posts: 37
    Normally I'd say the derailleur needs to be adjusted / indexed.. but since Di2 derailleurs don't go off on their own and it was working before...

    have you checked the derailleur hanger? You or a family member may have bumped it, causing this issue.
    I run BetterShifting.com - Di2 help / tips / guides
  • davidmorgandpm-tTrUwc1
    davidmorgandpm-tTrUwc1 Posts: 3
    Hi Terry ,all straight and true indexing is fine up the cassette ,small to large and isn't bad on the lower end of the cassette, large to small but is not changing well from the large endnof the cassette down. I've done a crash reset and on the stand it seemed to be okay again bit I've not ridden it yet.
    Thanks for your reply.

Categories