11 -34 cassette on Van Nicholas Yukon commuter

Discussion in 'Bicycle Mechanics and Repairs' started by maroon, 25 Sep 2017.

  1. maroon

    maroon Well-Known Member

    Hullo,
    Been away a while enjoying the bike, but now feel it time for an upgrade. I've already changed the wheels to hand build Paul Hewitts ultegra hubs which I love.
    My question is can I fit a 11-34 cassette onto a ten speed Ultegra and how difficult is it my lbs says it's not impossible but advises not to due to gear changing being unreliable but that's one opinion as evans cycles reckon this can be done any clues please that don't involve rebuiling the whole bike?????????
    Thanks in advance...

    PPS Ian please help, I know your out there don't let me down.
     
  2. Tim Hall

    Tim Hall Guest

    Location:
    Crawley
    What cassette us on there at present? What is your hoped for outcome by doing this?
     
  3. OP
    OP
    maroon

    maroon Well-Known Member

    Hi Tim , I have an 11-30 cassette currently on there ,it's for the hills really
     
  4. Tim Hall

    Tim Hall Guest

    Location:
    Crawley
    Ok, next questions. What chainset, or more accurately, how many teeth on the chain rings (I'm assuming it's a double). Which rear mech? Any markings/model number to let us know how long the cage is?
     
  5. OP
    OP
    maroon

    maroon Well-Known Member

    OK it's a triple
     
  6. Tim Hall

    Tim Hall Guest

    Location:
    Crawley
    Damn. That's a five pound bet I've lost. The teeth on the chainrings and rear mech questions still need answering though.
     
  7. OP
    OP
    maroon

    maroon Well-Known Member

    Bikes not with me today so can't give more details at the moment apologises Tim but as a general guide is it possible?
     
  8. raleighnut

    raleighnut Guru

    Location:
    On 3 Wheels
    Have you got the GS rear mech
     
  9. Nibor

    Nibor Über Member

    Location:
    Accrington
    If it is a road triple it is most likely a 50 39 30 if you have a long cage rear derailleur which 9s likely with a triple then it should fit with a tweak of the b screw. May also need a new chain depending on the wear on the old one.
     
  10. OP
    OP
    maroon

    maroon Well-Known Member

    I have but i'm being told by my lbs , I could use an xt large cage but he says the gearings not too smooth therefore he advises against it. I looked it up Shimano do not produce deraillieurs to cope beyond 30th on a 10 speed
     
  11. OP
    OP
    maroon

    maroon Well-Known Member

    thanks nibor I tried changing the chain and tweaking the B screw, tbh I also checked with Evans Cycles they reckon it's doable as well. Not sure if my lbs is up to it or being honest?
     
  12. Soltydog

    Soltydog Guru

    Location:
    near Hornsea
    My commuter/winter/tourer bike has 10 speed Tiagra group set & it copes fine with a 32t rear cassette :okay: On tour last year my smallest gear wasn't enough for some hills whilst carrying luggage, so before I went away this year I fit a 32t cassette, probably needs another link in the chain to use the 32t on the big chainring though :blush:
     
  13. OP
    OP
    maroon

    maroon Well-Known Member

    Ahhh
    But would I need to change the whole group set to achieve this , a bit extreme methinks for 8 extra teeth
     
  14. Cycleops

    Cycleops Guru

    Location:
    Accra, Ghana
    Don’t know where you got that from but they can go up to 40t or even more I think. As for smooth changes maybe ask an MTBer how his performs.
     
  15. OP
    OP
    maroon

    maroon Well-Known Member

    Thanks for the reply.......so confused now as what should be my next step
    tbh I'm a bit disappointed as I had hoped to support my lbs but from the comments above I'm starting to think maybe this may be beyond them, I'm loathed to go to Evans but I'd really like this done.

    Any thoughts people???????
     
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