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Which Way Up With KMC X Chain

Old 12-03-14, 12:56 PM
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Dfrost 
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Which Way Up With KMC X Chain

I have a new KMC X8.99 chain to install on my 8-speed road drivetrain with a Shimano cassette and TA rings. Is there a preferred up-down orientation for these chains? Nothing is mentioned in the installation sheet.
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Old 12-03-14, 01:08 PM
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Originally Posted by Dfrost View Post
I have a new KMC X8.99 chain to install on my 8-speed road drivetrain with a Shimano cassette and TA rings. Is there a preferred up-down orientation for these chains? Nothing is mentioned in the installation sheet.
If you cannot see any top/bottom asymmetry, than there isn't and either way is fine. If you can see asymmetry, refer to the instructions, or here are things to consider.

1- If the inner plates have more inside bevel on one side or the other, the beveled side is the sprocket side
2- If the outer plates are different on either side of the chain the smaller or more sculpted plate goes toward the frame.
3- If the outer or inner plats have smaller "waists" on the top or bottom, the smaller "waist" goes toward the sprockets.
4- If you can't see any of the three conditions above, the sprockets won't notice them either.
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Old 12-03-14, 01:08 PM
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There's no right or wrong orientation for that chain; it's not directional.
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Old 12-03-14, 01:12 PM
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Originally Posted by Dfrost View Post
. . . Nothing is mentioned in the installation sheet.
You don't like KMC's answer so you ask the jokers here?
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Old 12-03-14, 05:03 PM
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Originally Posted by FBinNY View Post
If you cannot see any top/bottom asymmetry, than there isn't and either way is fine. If you can see asymmetry, refer to the instructions, or here are things to consider.

1- If the inner plates have more inside bevel on one side or the other, the beveled side is the sprocket side
2- If the outer plates are different on either side of the chain the smaller or more sculpted plate goes toward the frame.
3- If the outer or inner plats have smaller "waists" on the top or bottom, the smaller "waist" goes toward the sprockets.
4- If you can't see any of the three conditions above, the sprockets won't notice them either.
Thanks, FB. I'm certainly aware that most chains are not directional, but this "X" chain does have asymmetric shapes on the outer plate surfaces. Your guidelines will help me determine if they matter or not.
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Old 12-03-14, 05:29 PM
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Yup, as mentioned the KMC X8.99 can be mounted any direction. I'm pretty sure if you flip the chain in any direction you want the X's will still have the same orientation. They used to make the re-usable masterlinks with a unidirectional curve but seem to have stopped making them that way. If the link has a slight curve to it just mount the curve facing the sprockets.
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Old 12-03-14, 06:08 PM
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the fancy features only went on the high end ones . this is just 8 speed stuff.
do both sides look the same?

the re use would not be to keep the quick link and use it with another Chain , but you can open them and soak the chain to thoroughly clean it,
Or take it back apart and flip the chain over to see if it matters ..

New Chain will come with a Fresh Link. ... X8.99 » KMC Chain
the X and the Nickel plate are more to get more money than anything else

other brands stamp in different Bulges

Last edited by fietsbob; 12-03-14 at 06:13 PM.
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Old 12-03-14, 09:21 PM
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Originally Posted by Crankycrank View Post
They used to make the re-usable masterlinks with a unidirectional curve but seem to have stopped making them that way. If the link has a slight curve to it just mount the curve facing the sprockets.
Did KMC make a master link with a preferred orientation? I know that Wipperman's Connex link has a specific orientation but I wasn't aware that any other maker's did.
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Old 12-04-14, 03:38 PM
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^^I'm pretty sure KMC used to. I seem to remember (I could be wrong on that) having to check the link closely as it had only a slight curve to it and could be missed if not careful. Not quite as obvious as the Connex version though.

Last edited by Crankycrank; 12-04-14 at 03:42 PM.
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