Will a 3 speed shifter work with a 2 speed front derailleur / chainset

Discussion in 'Bicycle Mechanics and Repairs' started by Nibor, 2 Mar 2019.

  1. Nibor

    Nibor Bewildered

    I want to convert a 9 speed road bike to flat bars and have some 3 X 9 acera shifters. I wondered if they would work for a 2 speed front set up?
  2. DCBassman

    DCBassman Veteran

    Ten Forward
    Not easily, maybe not at all. What groupset is currently fitted? It may well be that the rd shifter will be fine, it's always more difficult to mix and match up front, particularly between road and mtb groupsets.
    Edit: of course, you could put a triple up front!
  3. OP

    Nibor Bewildered

    Fair comment I believe it is Sora
    DCBassman likes this.
  4. mcshroom

    mcshroom Bionic Subsonic

    Egremont, Cumbria
    They should do. Set them up so the 2 rings are 2-3 positions on the shifters otherwise you risk trying to force the locked out 3rd shift and breaking the shifter.

    However, the front derailleur will have a different cable pull so you will have to replace that with a mtb one.
    meta lon and C R like this.
  5. Madcycli5t

    Madcycli5t New Member

    First of all ,are you sure you don't need those lower gears . if the gear changer lower screw is set to hold the chain on what was the middle ring of three rather than the lower ring of two I don't think you would have any problem.
    C R likes this.
  6. DCBassman

    DCBassman Veteran

    Ten Forward
    Ok, I've done this, with an 8-speed Sora. The Acera right-hand shifter should work fine. If you search, you may find proper Sora flat shifters, they certainly existed for 8-speed, and there were versions for double and triple chainrings.
    If you search "sora 2x9 flat bar shifters" you will get what you need, but they will require separate brake levers. These are not difficult to find at all.
  7. meta lon

    meta lon Guru

    Shouldn't be a problem, limit screws and cable setting.
    Try it would be my choice
    TheDoctor and Smokin Joe like this.
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