Gear indexing issue

Discussion in 'Bicycle Mechanics and Repairs' started by Chris1983, 11 Jan 2018.

  1. Chris1983

    Chris1983 Senior Member

    Hi folks.

    I'm pulling my hair out here with my road bike. The rear gear indexing was becoming hard to maintain. So I've fully serviced the bike as it had been a while any way and I've had it before where a bit of crap gets in the cable and causes issues.

    So I've fitted a new chain, new cables both inner and outer (dura-ace cable set) and new jocky wheels as the others where slightly worn.

    So should be easy to set up right? Wrong. I can't get the bloody thing to index. It's no better than it was before I replaced everything. I can get it to index nicely in one direction but not the other.

    I've fully removed the cable from the bike and re routed it and checked for snags etc and it looks fine to me. I just can't work out what the issue.

    Any ideas are welcome. I've left it for this evening because it was making me angry


  2. Heigue'r

    Heigue'r Über Member

    Possibly bent mech hanger?
    Ajax Bay, dave r, Dogtrousers and 4 others like this.
  3. Ajax Bay

    Ajax Bay Veteran

    East Devon
  4. OP

    Chris1983 Senior Member

    Fair shout. Didn't check. If it is then it's very subtle as everything looks to be in alignment but I have got a spare so I will try that tomorrow.
  5. winjim

    winjim A youth of interminable age

    Jockey wheels the right way round? The top one should have float.
    raleighnut likes this.
  6. OP

    Chris1983 Senior Member

    Yep. I checked that. The only thing I have noticed is that the new wheels are ever so slightly larger, even accounting for a bit of wear. But I adjusted the b screw very slightly to compensate for this.

    Jocky wheels are Uber Bikes jocky wheels. Running these on my other two bikes and never had an issue with them so thought why not add them to the road bike as well.
    winjim likes this.
  7. iluvmybike

    iluvmybike Well-Known Member

    Did u change the cassette as well - if not and it was worn then that may be yuor issue
  8. bpsmith

    bpsmith Veteran

    As above, check the hanger before going any further. Worth investing in the tool in my opinion. Have had loads of use out of mine over past few years, despite not ever noticing that I had knocked it.
    raleighnut likes this.
  9. OP

    Chris1983 Senior Member

    I did not change the cassette. Just because visually it didn't show any signs of obvious wear.

    However this thought did cross my mind.

    Thanks for the replies folks. I will fit a new hanger this evening as I've got a spare and if that doesn't fix the issue then I'll order a new cassette. Seeing as everything else has been replaced o might as well replace that as well


  10. OP

    Chris1983 Senior Member

    Apologies for the daft question but What's is the "the tool"?
  11. Pale Rider

    Pale Rider Guru

  12. bpsmith

    bpsmith Veteran

  13. raleighnut

    raleighnut Guru

    On 3 Wheels
    If you fit a new hanger it will still need to be checked for alignment.
    bpsmith, screenman and Pale Rider like this.
  14. Pale Rider

    Pale Rider Guru

    Good point, the new hanger will probably be dead straight, but the bit of the frame it bolts to might not be.
    bpsmith, dave r and raleighnut like this.
  15. Rooster1

    Rooster1 I was right about that saddle

    Some pics might help
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