width of chainsets

Discussion in 'Bicycle Mechanics and Repairs' started by cyberknight, 4 Mar 2018.

  1. cyberknight

    cyberknight Bullied off cc

    Does the width of a chainset chain rings vary ?
    Put a "cheap " fsa powerdirve chainset in and although i have a 10 speed microshift FD the chain rubs in either the top or bottom gear .
    Cant remember it rubbing on the hollowtech 2 BB fsa chainset
     
  2. Cycleops

    Cycleops Guru

    Location:
    Accra, Ghana
    I imagine you mean between the two/three chainrings. Seems like they do , have you compared them? You just need to adjust the h/l screws.
     
  3. OP
    OP
    cyberknight

    cyberknight Bullied off cc

    Nope double to double
    both compact hollowtech 2 to fsa powerdrive.
    LBS claims my front mech is 9 speed but it is 10 speed although on further reading microshift is a bit pants .
     
  4. OP
    OP
    cyberknight

    cyberknight Bullied off cc

    asking on a boardman facefluff page and a tech has basically told me the microshift mechs are renowned for rubbing
     
  5. chriscross1966

    chriscross1966 Senior Member

    Location:
    Swindon
    Yes, each company has their own take on the perfect chainline, though some of them are pretty close.... I have endless fun putting aftermarket (generally Campagnolo Ultratorque) chainsets and bottom brackets in my Bromptons...
     
  6. si_c

    si_c Veteran

    Location:
    Wirral
    If you've changed the chainset, then it is likely that the position is subtly different from the previous one, so you may well need to adjust the high-low limit screws, and possibly the cable tension to remove the rub, might take a bit of trial and error.
     
  7. OP
    OP
    cyberknight

    cyberknight Bullied off cc

    Done that , it either rubs top or bottom, cant get it right .
    On further reading the FD is a microshift jobbie that is renowned for being a bit pants so I am on the hunt on fleabay for a sram FD to match the rest of the groupset .
     
    si_c likes this.
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