Chainring switching

Discussion in 'Bicycle Mechanics and Repairs' started by Gummo, 5 Mar 2018.

  1. Gummo

    Gummo Active Member

    Hello comrades!

    On switching between chainrings, I can go to 2 and 3 in the normal way.

    However, if I'm on 3 and I want to go to 2 - I must go straight to 1 and up to 2 again.

    Help!

    Deore.jpg
     
  2. Low Gear Guy

    Low Gear Guy Well-Known Member

    Location:
    Surrey
    Sounds like not enough spring force to return the mechanism. Have you tried lubricating both ends of the cable and the shifter?
     
  3. Ajax Bay

    Ajax Bay Veteran

    Location:
    East Devon
    I wouldn't recommend lubricating the end of the cable the OP has clamped at the FD. Why would you (anyway)?
     
  4. Nigelnightmare

    Nigelnightmare Active Member

    Why not?
    I use Silicone grease on all my cables.
    Not only does it help reduce friction it also helps prevent water ingress.
     
  5. raleighnut

    raleighnut Guru

    Location:
    On 3 Wheels
    Cable tension is out slightly, the only thing that indexes the middle ring is the cable tension. When 2 is selected the arms of the front derailleur should be central on the middle ring
     
  6. PpPete

    PpPete Guru

    Location:
    Chandler's Ford
    Lubricating the cable at the FD - no
    But getting some lube in to the outer casing to reduce friction between inner & outer might do it.

    Failing that, a quarter turn clockwise of the relevant adjuster. But no more that one quarter - and if it doesnt work reverse it, and deeper investigation by competent mechanic required.
     
  7. OP
    OP
    Gummo

    Gummo Active Member

    Plenty to go on there - thanks comrades.
     
  8. Ajax Bay

    Ajax Bay Veteran

    Location:
    East Devon
    I said: "I wouldn't recommend lubricating the end of the cable the OP has clamped at the FD."
    I too use grease on the stretches of the cables that pass through outers (though I know some say 'no need with modern outer liners') and under the BB.
    But I rather appreciate some friction where the cable is clamped at its attachment to the FD. That's "why not". Think about it.
     
    PpPete likes this.
  9. OP
    OP
    Gummo

    Gummo Active Member

    That worked!
     
  10. PpPete

    PpPete Guru

    Location:
    Chandler's Ford
    :hyper:
     
    Gummo likes this.
  11. raleighnut

    raleighnut Guru

    Location:
    On 3 Wheels
    Told you it was cable adjustment

     
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