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Dura Ace 7900 chain on SRAM Red=CLUNK!

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Dura Ace 7900 chain on SRAM Red=CLUNK!

Old 07-10-10, 11:16 AM
  #1  
JonnyV
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Dura Ace 7900 chain on SRAM Red=CLUNK!

the SRAM 1090R chain that came with my group wore out, rather quickly, and I replaced it with a 7900 chain. Just spinning it's fine but when I torque on it there's a "clunk" like it's not tuned properly, though it is. Just for schnitz and giggles I put the old chain back on. Though loud; rough, dry noise coming from it, it doesn't do what the new chain is doing. I measured and they're the same number of links and pretty close in length, obviously the old one is a bit longer from stretch.
Does the 7900 just not work with Red? Or am I missing something?
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Old 07-10-10, 01:52 PM
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How much did you let the old one stretch? Could have affected your cassette.
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Old 07-10-10, 02:00 PM
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The 7900 chain is asymmetric. It can only be used with 7900 cassettes, and no others. Not even 7800, nothing but 7800.

If you want a chain for SRAM stuff, I highly recommend the KMC X10 (or X10SL or L).

I use the X10SL, and it works really well with 2010 Force.
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Old 07-10-10, 02:11 PM
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Originally Posted by recon455 View Post
How much did you let the old one stretch? Could have affected your cassette.
using a Park CC-2, it was just shy of .75. It was making a good bit of noise. I really hope the cassette isn't affected, it's only 6 months old.
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Old 07-10-10, 03:19 PM
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Originally Posted by Flatballer View Post
The 7900 chain is asymmetric. It can only be used with 7900 cassettes, and no others. Not even 7800, nothing but 7800.

If you want a chain for SRAM stuff, I highly recommend the KMC X10 (or X10SL or L).

I use the X10SL, and it works really well with 2010 Force.
Have the 7900 chain with my '09 Force. Works great. Bike was built up by Steve Hampsten.
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Old 07-10-10, 03:56 PM
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Originally Posted by Terex View Post
Have the 7900 chain with my '09 Force. Works great. Bike was built up by Steve Hampsten.
Andy's brother?
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Old 07-10-10, 05:02 PM
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Originally Posted by Flatballer View Post
The 7900 chain is asymmetric. It can only be used with 7900 cassettes, and no others. Not even 7800, nothing but 7800.

If you want a chain for SRAM stuff, I highly recommend the KMC X10 (or X10SL or L).

I use the X10SL, and it works really well with 2010 Force.
I use the 7900 chain with 7800 cassettes (as well as 7900 cassettes) with no problems.
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Old 07-10-10, 05:51 PM
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I'm just going by what Shimano and others have said. Still doesn't seem worth it to me, when a KMC would work better and is about the same price.
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Old 07-10-10, 07:12 PM
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Originally Posted by Flatballer View Post
The 7900 chain is asymmetric. It can only be used with 7900 cassettes, and no others. Not even 7800, nothing but 7800.

If you want a chain for SRAM stuff, I highly recommend the KMC X10 (or X10SL or L).

I use the X10SL, and it works really well with 2010 Force.
I thought it was compatible with Ultegra 6600 & 6700?
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Old 07-10-10, 07:40 PM
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SRAM chain works fine w/Ultegra, but it's damned noisy. my next chain will be Ultegra or KMC.
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Old 07-11-10, 06:46 AM
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kmx x10ti shifts great with sram.
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