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Must read: wierd buy, Need advice on chain as well

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Must read: wierd buy, Need advice on chain as well

Old 05-30-16, 02:36 AM
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Must read: wierd buy, Need advice on chain as well

I have a cannondale quick 4 i bought this month. It's 2015 so it should have 24 gears but for the wierdest reason that I do not know, it has 27 gears, and yes I am sure. When im on 1 and 9 the chain is hitting the derailer i think it is, also on 2 and 1 and 3 and 1. Im guessing they added a different cassette and changed the gears but forgot to maybe add a longer chain and that's why it's hitting something. They said theyk used the bike before i bought it for a charity event so i'm kind of lost right now. Any advice what it might be, and also what I do about the different gears they must have surely changed?
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Old 05-30-16, 06:37 AM
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Shop should adjust it for free.
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Old 05-30-16, 08:33 AM
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What you are describing sounds pretty normal actually. When you're in "1 and 9" or "3 and 1" you're "cross chaining," which is a bad thing. It's rubbing because you're not really supposed to go into those gears, and derailleurs are often adjusted with that in mind.

Why Avoid Cross Chaining Gears On Your Bike

With that said, a well tuned bike won't rub in all but the very extreme gear combinations, if that. (1 and 9, 3 and 1)

If the previous owner swapped out the 8 speed (in the rear) to a 9 speed then they had to have switched the chain as well, so I bet it's the right length. (8 speed chains do not work on 9 speed bikes.) Do us a favor. Shift into big-big (3-1) and small-small (1-9) and take pictures of both. Post them and we'll tell you if your chain is too big or too small. Be careful when doing big-big, as if the chain is too short, you'll break stuff.

Last edited by corrado33; 05-30-16 at 08:40 AM.
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