New Ultegra cassette, rough shifting?

PLuKE
PLuKE Posts: 181
edited July 2015 in Workshop
Hi guys.

I have changed from a Tiagra 12-28 to a Ultegra 12-25 but now the gears are shifting up that well and jumping ever so.

Any ideas what I could check?

Thanks
Luke
2013 Merida Ride 93 Carbon

Comments

  • nicklouse
    nicklouse Posts: 50,675
    Have you reset the rear mech?

    If no start there.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • trailflow
    trailflow Posts: 1,311
    Did you put a spacer behind the new Ultegra cassette ? i think a spacer should be included but not 100% sure.

    Tiagra cassettes have a spacer built in. So that could be the issue.

    Is there play in the cassette if you wiggle it side to side ? Freehubs can move abit also so try not to mistake it for that.

    Check the lockring is tight and the wheel is seated properly.
  • PLuKE
    PLuKE Posts: 181
    Right.

    Spacer already on as its a 10sp.

    The cassette was seated correctly.

    BUT there is a washer, which my Tiagra didn't have. From the instructions it says the washer goes between the last cog and lockring, but I tried putting it on, but it seems it's not from there?

    Thanks
    Luke
    2013 Merida Ride 93 Carbon
  • PLuKE
    PLuKE Posts: 181
    I already found my answer.

    The Tiagra cassette came with an inbuilt 1mm spacer, the Ultegra doesn't and needs fitting aswell.

    Thanks guys.

    Luke
    2013 Merida Ride 93 Carbon

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