front derailleur issue

blablablacksheep
blablablacksheep Posts: 1,377
edited February 2011 in MTB workshop & tech
Hi

Spez rockhopper08
had for about year and a bit and great bike. issue i have though apart from 2 out of true wheels(not much to do though about them )

is that my front derailleur seems to be clipping the chain, so when i pedal in 3rd gear high i get a rubbing sound as the chain rubs along the derailleur.

how can i fix this and hopefully stop this anoying noise, i cant find any guides for doing it here and pretty sure it be simple enough to do myself.
London2Brighton Challange 100k!
http://www.justgiving.com/broxbourne-runners

Comments

  • The Rookie
    The Rookie Posts: 27,816
    Read the faq or go to Sheldon Brown or Parktools for guidance, you just need to reindex it I suspect.

    To clarify "3rd gear high" means what in English? largest ring at the front I assume?

    Is it rubbing the inside or outside of the cage? (Inside nearest frame, outside furthest from)

    Simon
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.
  • Chunkers1980
    Chunkers1980 Posts: 8,035
    Did you try park tools? You'll have most prob lost some cable (or stretched/moved the adjuster), twisted the mech or bent something. Hope it's not the latter!

    All there, check the alignment and read about indexing.
  • Chunkers1980
    Chunkers1980 Posts: 8,035
    Also check for play in the bottom bracket. Pull a crank arm side to side and it should not move.
  • blablablacksheep
    blablablacksheep Posts: 1,377
    going to take some pictures as i been reading though the guides and i think i might know the problem but il post a picture as that will exsplain a lot clearer.
    London2Brighton Challange 100k!
    http://www.justgiving.com/broxbourne-runners

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