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Rear derailleur problem.

Peter91Peter91 Posts: 16
edited March 2013 in Workshop
I've been out 3 times now on my new road bike (triban 5A), with 9 speed Shimano Sora shifters/derailleurs. All of the gear changes are absolutely fine except for gear 7 to gear 6 on the rear cassette, where the chain doesn't move sprocket and clicks along unhappily. Instead I have to downshift two and upshift one, which while not a huge problem isn't ideal. Adjusting the cable tension doesn't improve the matter unless its changed enough to affect the rest of the gear changes.

Is there anything else I can do to improve this, or is it just something to be expected/put up with?
Thanks

Posts

  • oxomanoxoman Posts: 9,733
    As a new bike the cables tend to stretch a bit so adjustment is usually all that is required. Given its new you should get a 6 week service, get them to sort it out for you then.
    Too many bikes according to Mrs O.
  • Peter91Peter91 Posts: 16
    Will do, thanks.
  • sungodsungod Posts: 13,789
    you should still be able to adjust it for correct shifting through the whole range

    the bike is new, so wear won't be the cause, which leaves misalignment as the most likely cause

    check the rear wheel is fully seated, open the quick release on the rear wheel, then put weight on the saddle while closing the qr

    if it's still not right, the rear hanger may be slightly out of alignment - easy enough to fix, if the shop is nearby i'd call up and see if you can take it in and have them do it while you wait, takes about 10 minutes
    my bike - faster than god's and twice as shiny
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