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Stumpjumper chainslip

StephenjamesStephenjames Posts: 47
edited July 2012 in MTB workshop & tech
Hi,

I have a Specialized '08 Stumpjumper HT. Recently the chain started to slip, mostly on the middle sprockets. I took it to my local bike shop who shortened the chain, replaced the gear cable and alignned the gears. After a 12 miles ride it has started to slip again quite badly. The chainslip has become quite bad, I have shortened the chain by two links and aligned the gears once moree, but still it won't hold a gear. Any suggestions?

Thank you.

Posts

  • nicklousenicklouse Posts: 50,675 Lives Here
    worn cassette. worn chain. worn chain rings.

    any or all of the above.

    shortening a chain will not fix worn out parts.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • cooldadcooldad Posts: 32,599
    But it will put money in the till. Kaching.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • Thanks for your input guys. Bike shop says rear derailleur cable stretch.
  • cooldadcooldad Posts: 32,599
    In that case it just needs a tweak of the barrel adjuster. Approx 5 seconds. You don't need a shop for that, follow the link to Parktools in Nick's sig.
    But in any event I would find a new bike shop.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • Thnx again for the info guys. The bike shop got it running like clock work after the second visit. Learnt a thing or two by chatting with the mechanic. Will check out the Parktools site.
  • nicklousenicklouse Posts: 50,675 Lives Here
    So the chain was not slipping but jumping due to miss alignment ;)
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • The RookieThe Rookie Posts: 27,792
    Some bike mechanic, try speaking to one who knows what he's doing!
    Current steed - Whyte T129, 2013 frame, mongrel Revelations, Giant dropper, Stans S1 wheelset. 12, Magura Trail Sport brakes, 1x11. 12.8Kg
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