super record front mech adjustment

markyone
markyone Posts: 1,119
edited October 2010 in Workshop
hi all my front mech only seems to have 2 to 3 mm of clearance from the crank arm when on the big ring, it seem very close. if i adjust the limit screw inwards to give it more clearance i cant get the shift to go from the small ring to big :cry: any advice cheers
Colnago c60 Eps super record 11
Pinarello F8 with sram etap

Comments

  • Chrissz
    Chrissz Posts: 727
    If you mean clearance between the top of the teeth and the bottom of the outer edge of the mech then that's pretty much right! I have mine set to less than 1mm of clearance with no issues in over a year of use.

    The stop screws are there to 'stop' the mech from shifting too far out or in - not for clearance.

    Clearance between mech and chainring is adjusted by moving the mech up/down the seat post.
  • Monty Dog
    Monty Dog Posts: 20,614
    Adjust the outer position of the mech when in the big ring / small sprocket - the cage only needs to be outboard enough to prevent the chain rubbing - make sure mech cage is parallel with chainrings too i.e. not angled
    Make mine an Italian, with Campagnolo on the side..
  • markyone
    markyone Posts: 1,119
    hi its the side of the outer plate which is about 2 or 3mm from crank arm if that makes sense very close
    Colnago c60 Eps super record 11
    Pinarello F8 with sram etap
  • dmch2
    dmch2 Posts: 731
    I'm not sure I understand the problem...
    It shifts fine and nothing rubs so why do you want to change anything?
    If there's 2mm of clearance between the mech and the crank as it comes round each revolution then sure that's fine? It's not like the crank or BB or derailleur is going to flex enough to cause a problem
    2010 Trek 1.5 Road - swissstop green, conti GP4000S
    2004 Marin Muirwoods Hybrid
  • markyone
    markyone Posts: 1,119
    just was worried it was to close to the arm on each revolution thanks for the info
    Colnago c60 Eps super record 11
    Pinarello F8 with sram etap