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  1. #1
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    Adding new links to old chain

    Just added a larger sprocket (+3 teeth in rear) and will likely need a longer chain. I just put a new chain on a few months ago (less than 500 miles on it) and hate to buy a new one. I still have the links I removed when I installed it (Dura-Ace 9sp chain).

    I know the standard recommendation is to never add new links to an old chain. But I'm skeptical of absolutes. I understand there is a risk of increased tooth wear on the sprockets and rings. I'm planning to upgrade to 10sp in the next year so premature cassette wear is not a concern, but chain ring wear is (just moved from a triple to a new compact). According to my Park chain wear gauge (CC-3) the old chain is OK.

    I'm planning to add the links and see if I notice any poor performance or visual gaps before buying a new chain. Is this a really bad idea?

    Thanks in advance.

  2. #2
    It's MY mountain DiabloScott's Avatar
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    1. You might not need any additional length - three extra cogs doesn't mean three extra half-links.
    2. If you do need it, there's hardly any downside so long as you do it right - using the right removable pin etc, or a master link.

    You already put the cassette on - if it goes into big big without jamming then you're fine... but stay out of that gear anyway.
    http://diabloscott.blogspot.com/

  3. #3
    7-speed doomsday prepper ThermionicScott's Avatar
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    +1 to Scott's post. If you use another master link to add the new ones (good thinking saving the leftover links!), the chain should perform fine.
    Quote Originally Posted by chandltp View Post
    There's no such thing as too far.. just lack of time
    RUSA #7498

  4. #4
    Charles Ramsey
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    Sure go ahead I keep a bunch of spare links around because I'm always experimenting with gears. Bicycle shops throw spare links away when they install a new chain. Sram 8 and 9 cog chains can be taken apart with a chain tool and put back together. Shimano chains can't do this without the special pin. If you have a shimano they can be joined with Sram powerlinks.

  5. #5
    Constant tinkerer FastJake's Avatar
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    +2 to Scott's post. See if the chain is long enough first, then add links if necessary using a masterlink or the special Shimano pins.

    Quote Originally Posted by Charles Ramsey View Post
    Sram 8 and 9 cog chains can be taken apart with a chain tool and put back together. Shimano chains can't do this without the special pin. If you have a shimano they can be joined with Sram powerlinks.
    NO Hyperglide (SRAM 8 and 9S chains fall into this category) should EVER be rejoined by pushing the old pins back in. That's why they come with the PowerLinks...
    Why "derailer" is the correct way to spell the gear-change mechanism: sheldonbrown.com/derailer.html

  6. #6
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    I've done it a couple of times, and so far have never had a problem related to that particular thing. I use master links and therefore have two masterlinks with a couple of chain links in between for the splice.

    I will advise to use new masterlinks, as I do feel (based on some experience I've had) that if you ever try to use a master link beyond what would be a normal chain life, they wear out and can actually spontaneously uncouple. I know it sounds strange, but I've had that problem, and it's the only thing I can think of causing it. I think their life span is longer than any chain though, so if you simply never move a master link from chain to chain, you won't have that problem.

  7. #7
    coprolite fietsbob's Avatar
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    a 2nd quick link,+ a inner link on its own falls apart, so rollers fall out.
    its a PIA.

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