Jockey wheels

Discussion in 'Bicycle Mechanics and Repairs' started by Flash1982, 11 Jul 2019 at 19:54.

  1. Flash1982

    Flash1982 New Member

    Please help!

    I've recently changed my jockey wheels to tacx 10 tooth appropriate for shimano 8 speed cassettes and derailure. Seems to be running smooth upto 14-16 where it becomes noisy and feels sluggish when pedalling. I think this is because the jockey wheels that where on was 11 tooth shimano. Will removing a chain link remedy this? Or do I just get the 11 tooth version of the jockey wheel?
    Your insights will be greatly appreciated!
     
  2. Cycleops

    Cycleops Guru

    Location:
    Accra, Ghana
    Can't see that going to 10t jockey wheels is going to make much difference. More likely to be poor chain line on 14/16t cassette?
     
    Salty seadog likes this.
  3. OP
    OP
    Flash1982

    Flash1982 New Member

    Thanks for the response. The rear cassette is 30-11 tooth and the gears making the noise are gear 14, 15, and 16.
     
  4. Cycleops

    Cycleops Guru

    Location:
    Accra, Ghana
    Have you identified where the noise is coming from?
     
  5. C R

    C R Über Member

    Location:
    Worcester
    Were the original jockey wheels both the same size? I think one is usually smaller than the other.

    Another thing to check that the derailleur was reassembled correctly, with everything going back in the right order, and check that the hanger wasn't knocked out of alignment.
     
    the_mikey likes this.
  6. raleighnut

    raleighnut Guru

    Location:
    On 3 Wheels
    Have you fitted them the in the right place, the bottom wheel and top wheel are different, the top one should have about 1mm side to side movement whereas the bottom one doesn't.
     
    Drago likes this.
  7. themosquitoking

    themosquitoking Veteran

    Location:
    Spain
    ^^^^^^This.
     
  8. fossyant

    fossyant Ride It Like You Stole It!

    Location:
    South Manchester
    Tacx jockeys may need a spacer (supplied in pack) to ensure the cage is far enough away from the chain - I use them on my 8 speed XT rear mech. You really should have the same number of teeth for the mech as the original wheels. If I didn't use the spacers, the chain would rub the cage as the Tacx jockeys are narrower.

    TBH they are fab jockey wheels, need no maintenance, other than cleaning the teeth.
     
  9. fossyant

    fossyant Ride It Like You Stole It!

    Location:
    South Manchester
    Tacx jockeys are fixed, no movement as sealed bearings. The work very well though.
     
  10. Ajax Bay

    Ajax Bay Veteran

    Location:
    East Devon
    On this specific point - no - chain length will have no effect on symptoms (in circumstances) described.
     
    C R likes this.

  11. Tacx jockey wheels come with a selection of plastic bushes and care should be used to select the right one for your derailleur, also bear in mind the change of jockey wheel size could result in a lack of chain tension on some gears (seems unlikely but worth checking)
    and potentially cause the jockey wheel to crash into the cassette. You might need to drop a link or two if there is an issue.
     
  12. raleighnut

    raleighnut Guru

    Location:
    On 3 Wheels
    How does the indexing work without that sideways 'float'?
     
  13. fossyant

    fossyant Ride It Like You Stole It!

    Location:
    South Manchester
    It works fine. Been using Tacx jockeys on my retro 90s MTB with XT for years.

    SRAM doesn't have the float either.
     
    raleighnut likes this.
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