Common to replace rear gear cog?

Bike-Rich
Bike-Rich Posts: 275
edited May 2012 in MTB workshop & tech
Hi all,

Starting to get a 'sticky area' on gears 1-3 on the rear no matter how finely I adjust and have replaced chain and cables.
Is it common to replace certain gogs or should I go for a complete new cassette?

Kind regards,

Comments

  • cooldad
    cooldad Posts: 32,599
    Generally the cassette.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • Chunkers1980
    Chunkers1980 Posts: 8,035
    Certainly the smaller the cog the more it will slip. Wear doesn't really effect the indexing on the cassette, are you sure it's not the mech, hangers or cables still,
  • cooldad
    cooldad Posts: 32,599
    Also what is 1,2,3? Easier to use smallest etc. 1 on the shifter would actually be the large cog, when they have numbers.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • Bike-Rich
    Bike-Rich Posts: 275
    Thanks guys :)

    cooldad - sorry yes, when I say 1,2,3 I mean first smallest, second etc.

    monkfinger - sticky meaning when I shift, there is a 'clicking' for a few pedal turns before chain moves up/down (only happens around smallest - third smallest cog.

    Looking at this guys, would you say cogs are worn?

    reargog.jpg
  • Chunkers1980
    Chunkers1980 Posts: 8,035
    Nope, not that wear effects the shifting too much.

    Pic from behind to see if your hanger is straight.
  • Bike-Rich
    Bike-Rich Posts: 275
    Thanks for reply,

    Is this pic better?

    Hanger.jpg

    The screw I have arrowed, what does this do? I have often wondered. I know the 2 below are my high/low limiters,
  • Chunkers1980
    Chunkers1980 Posts: 8,035
    That's to adjust the angle of the mech to align the top jockey to the sprocket. B screw
  • Chunkers1980
    Chunkers1980 Posts: 8,035
    Need a inline and from the side photo, it could be playing tricks from that angle
  • nicklouse
    nicklouse Posts: 50,675
    B screw. try reading Parktools as it covers all this. sounds like too much friction in the cables.
    what is the routing like?
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown