Forum home Mountain biking forum MTB workshop & tech

Problems with gearing...

Kerrmit1992Kerrmit1992 Posts: 275
edited February 2013 in MTB workshop & tech
Hi guys,

Today I have spent a good portion of the morning attempting to adjust the gears on my talon 3 for smooth noise-free shifting. No matter how much I adjust I seem to only have problems with the rear derailler. The bike is happy to shift between gears 1-6 quite smoothly, however, it doesn't seem to want to come down the way from 8-7 and sometimes 7-6. I need to go from 8-6 and back up to 7 if I want that gear. I hope that's not too confusing lol

Can anyone tell me if its just my poor adjusting or if its something else?

Thanks
Craig
Mountain biking is the bicycle version or rallying, except you don't need a Co-Driver!

Posts

  • supersonicsupersonic Posts: 82,708 Lives Here
    Take the cables out, clean, and start again.
  • Ok mate, I'll give that a bash tomorrow, Thanks

    Is this a common problem? what else could be the cause if this doesn't work?

    It's only a talon 3 I have so I imagine the rear derailer might not be of the best quality lol.

    Thanks
    Craig Kerr
    Mountain biking is the bicycle version or rallying, except you don't need a Co-Driver!
  • cooldadcooldad Posts: 32,599
    99.99999999% (scientifically accurate statistic) of all shifting problems are due to cables.
    I buy Shimano SP41 outer by the metre and Shimano stainless inners by the bunch and just replace them.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • I don't know what come as standard on the Talon 3, but they havc been on there for two years so may give them a change over instead of just cleaning them.

    Thanks
    Craig
    Mountain biking is the bicycle version or rallying, except you don't need a Co-Driver!
  • cooldad wrote:
    99.99999999% (scientifically accurate statistic) of all shifting problems are due to cables.
    I buy Shimano SP41 outer by the metre and Shimano stainless inners by the bunch and just replace them.
    This could be the 1 in a billion thats not cable related.
    Planet X Kaffenback 2
    Giant Trance X2
    Genesis High Latitude 2x10
    Planet X n2a
    Genesis Core 20
  • Knowing my luck, that is most likely lol
    Mountain biking is the bicycle version or rallying, except you don't need a Co-Driver!
  • cooldadcooldad Posts: 32,599
    cooldad wrote:
    99.99999999% (scientifically accurate statistic) of all shifting problems are due to cables.
    I buy Shimano SP41 outer by the metre and Shimano stainless inners by the bunch and just replace them.
    This could be the 1 in a billion thats not cable related.
    I am willing to bet £1,000,000,000,000,000,000,000,000 that it is.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • Haha, well I've ordered all the cables and stuff so just waiting on it arriving, I'm shocked at how inexpensive it was :-) lol
    Mountain biking is the bicycle version or rallying, except you don't need a Co-Driver!
  • Not quite a quadrillion pounds though!
    Planet X Kaffenback 2
    Giant Trance X2
    Genesis High Latitude 2x10
    Planet X n2a
    Genesis Core 20
  • OuijaOuija Posts: 1,386
    If it works in all other gear except one or two it's usually a sign of cable binding. If you've got a derailleur with a big loop of cable coming off the frame and into the back of the derailleur then it's usually this part that causes dodgy shifting as the combination of a sharp curve and road dirt/rust tends to build up in it so that the amount of cable moved at the shifter end of the bike doesn't transfer fully to the derailleur. Often, only after you've pressed the up or down shifter twice does the cable 'unstick' and move, like a tectonic plate, and then jumps two cogs instead of one.

    Replacing the loop with a new one and a new inner cable (preferably low friction Teflon/PTFE) will fix this. The alternative is to convert the derailleur into a direct pull design (no, or minimal loop) with something like the Avid rollermajig or Rose bikes WCW Easy Roller.

    1232053320.jpg

    561068_1.jpg
Sign In or Register to comment.