Chain rubbing on pulley

Jordan93
Jordan93 Posts: 336
edited July 2010 in Workshop
When in the smallest chainring and biggest rear sprocket the chain rubs on the pulley

Comments

  • batch78
    batch78 Posts: 1,320
    What pulley exactly?

    If you mean the top pulley on the mech you need to adjust the mech, look here. www.parktool.com/repair/readhowto.asp?id=64
  • rally200
    rally200 Posts: 646
    yup, probably need to screw in the B "tension" screw - is your biggest gear within the capacity of the mech ?
  • alfablue
    alfablue Posts: 8,497
    A chain that is too long will cause this
  • Jordan93
    Jordan93 Posts: 336
    The gap between the top pulley and the rear cassette is rather substantial and this is causing the chain to rub on the top pulley. But my rear mech has no B- screw so how do i adjust it :twisted:
  • alfablue
    alfablue Posts: 8,497
    Photo?
  • Weejie54
    Weejie54 Posts: 750
    Shortening the chain, as someone has pointed out, is usually the order of the day. If you have horizontal (or anything but vertical) dropouts, taking the rear axle forward in those dropouts can help.

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