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Remove Links from new KMC Chain For Campagnolo Chorus 9 Speed?

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Remove Links from new KMC Chain For Campagnolo Chorus 9 Speed?

Old 10-09-12, 08:10 AM
  #1  
d.wayne
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Remove Links from new KMC Chain For Campagnolo Chorus 9 Speed?

Hi,

I'm about to purchase a KMC X9.93 chain for a Campagnolo Chorus 9 Speed setup. Campagnolo chains have 114 links while the KMC chain has 116 links. Should I remove the two extra links? I'm rebuilding my bike with new components so I don't have an original Campangolo 9 speed chain to compare lengths with.

On a side note, does anyone have any positive or negative opinions about KMC chains with Campagnolo 9 speed setups?

Thanks in advance.
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Old 10-09-12, 08:33 AM
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Assuming your gear selection is within the capacity of the RD, you should follow Campy's method for chain length.

Install the chain through the RD and around the 2 smallest sprockets bringing the ends to meet in the bottom loop. Bring the ends together until the RD cage begins to move off the stop, and join at the nearest link.

If you're not sure about the capacity, first confirm the minimum possible chain length by looping the two largest sprockets without threading the derailleur, add one inch, and note that length. Under no circumstances should you cut the chain shorter than that. Anything between the shortst big/big length, and the longest small/small length is OK, but I prefer to go with Campy's longest chain method.
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Old 10-09-12, 08:36 AM
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I am using the KMC on alot of bikes but I can't say I have put one on a Campi 9spd.

Chains come a standard lenght and need to cut to fit each bike. Look online for a tutorial for installing chains.
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Old 10-09-12, 08:42 AM
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The above replies are correct. Chains usually come longer than most gear set ups require and a few links have to be removed. The fact that they come new with 114 or 116 links is not the deciding factor. I like the big-big+1" sizing method by running the chain around the largest cog and largest chainring without going through the rear derailleur and add one inch (two half links). Be sure the ends match up as you will need an inner link at both ends to use the KMC master link.
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Old 10-09-12, 08:52 AM
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I have good results on Campy 10 speed.

Am I the only one that determines chain length by installing the chain on big-big, through the derailleur as normal, then eyeball the pulleys to be about 45 degrees to the ground ? Seems like setting the chain by putting it at the worst real cross-chain scenario ensures that it's long enough for the big-big combination and whatever length RD cage you have. Measuring off the small-small combination could leave you short when actually riding in big-big .. no ?
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Old 10-09-12, 09:00 AM
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If your present chain works OK, just cut the new chain to the same number of links. Otherwise I use the big-big-plus-1 inch method. I consider it the safest method. After replacing a chain always GENTLY test-shift into the big-big combination to be certain that nothing is overstressed before riding the bike. A too-short chain can have dire consequences.
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Old 10-09-12, 09:09 AM
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The three bears of chain length.

Big/big +1" is what Sram recommends, and is the absolute minimum length, no matter what.

small/small & take up slack is what Campagnolo recommends and is the longest length possible, but there's some wiggle room if the gear combination is slightly above the RD's take up capacity.

Shimano recommends a method somewhere in between.

----

While any method is OK mechanically, there are advantages or disadvantages to each.

It should also be noted that Campagnolo and Shimano RDs are different from Sram in that they have the cages rotating around a point between the pulleys, while Srams rotate around the upper pulley. That makes them react differently to changes in chain length.

The disadvantage of longer chain is extra weight, and that it might need cutting if the smallest sprocket or chainring get smaller. The advantage is that you have some breathing room if you later opt for a larger cassette or chainring. Another plus is that if somehow a link is damaged, there's enough chain to allow it to be cut and spliced shorter. (It's like carrying spare emergency links). Chain wear is reduced slightly, since it's spread over more, but we're only talking in the 2-6% range, depending on the difference in length.

The advantage of a shorter chain is saved weight, but you're limited in that you cannot go to a larger cassette without lengthening the chain.

Given that you can cut shorter at any time, but not the reverse, I find that using Shimano's or Campagnolo's method is preferable, and I always cut longer than the minimum, usually using the maximum, or 1" shorter than that.

In any case, since the OP is running a Campagnolo RD, it might make sense to do it Campagnolo's way.
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Old 10-28-12, 05:21 AM
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Thanks for the detailed answers. I ordered this chain in advance while I was collecting parts for an upgrade. I just rebuilt the drive train and used the Campagnolo/Shimano longest chain method. All of the information was extremely helpful.
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