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  • Cannot select gears properly – weak cable?

     tomlevell updated 11 years, 6 months ago 5 Members · 7 Posts
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  • weekend-warrior

    Member
    31 October 2009 at 5:55 pm

    Hi,

    I have a Specialized Rockhopper FS. I bought it 10 years ago but it’s only in the last year that it’s had any serious use and then only on-road at the weekend for an hour at a time.

    It has 24 gears, 3-primary, and 8 secondary. The problem is that only a subset of the gears can be selected. This hasn’t been a major problem, I keep it in Primary-2 and then flick between Secondary-2 and 3 which seems to cover 99% of road speed conditions. Selecting any gear outside of this causes some noise from the deraileurs butt the chain does not switch to the new cog. The pedal crank chain never moves from the 2nd cog as seen here: http://picasaweb.google.co.uk/ichaudhry/Rockhopper?authkey=Gv1sRgCMKAlrzahcCaPA#5398810247682519666

    At the rear, the chain only switches to a few of the cogs and never the smallest, as seen here: http://picasaweb.google.co.uk/ichaudhry/Rockhopper?authkey=Gv1sRgCMKAlrzahcCaPA#5398810206156512274

    What could the problem be? What do I need to do to fix it? It’s likely the gear cables are weak or not in tension enough, correct? I have fiddled with tightening screws and brackets here and there to no avail.

    Photos of my bike are:

    http://picasaweb.google.co.uk/ichaudhry/Rockhopper?authkey=Gv1sRgCMKAlrzahcCaPA#

    Any advice appreciated, thanks!

  • Malc

    Member
    31 October 2009 at 7:17 pm

    I think you should go through the whole set up procedure for indexing and limit settings.

    Look here. Clicky thing.

    Take your time reading it and follow instructions step by step.

  • Gunner

    Member
    31 October 2009 at 7:20 pm

    Have a look here:

    http://www.parktool.com/repair/readhowto.asp?id=64

    I would imagine it’s more likely your adjustment screws that are out of kilter than your cable, I’d certainly look at them, back and front first. 😉

  • Malc

    Member
    31 October 2009 at 11:14 pm

    I think there’s a parrot somewhere on this forum. 😯

  • weekend-warrior

    Member
    1 November 2009 at 8:41 am

    Thanks for your replies guys! Looks like Einstein and a soldier are on a level playing field when it comes to bikes! If this discussion was about quantum physics though… 😉

    Anyway – I will digest that guide. Guess I’ll have to print it out and have it with me because of the detail and photos within (or have my laptop next to the bike).

    Another thing – I heard about this network of “bicycle doctors” that exists in most cities – eg. you turn up and they try and fix folks bicycle issues. If I can’t get any success myself then I guess I could try them but does anyone else have a link or more info? I googled but it came up with lots of bicycle repair shops with the same name.

    As a last resort, I’m in the Southampton, UK area – are there any reputable bicycle maintenance shops around?

    Many thanks!

  • jezsherwood

    Member
    1 November 2009 at 10:51 am

    http://bicycletutor.com/ good workshop vids.

  • tomlevell

    Member
    1 November 2009 at 11:28 am

    New cables and outers for starters.

    I’m guessing they’ve probably never been changed.

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