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SRAM RED 12 Speed Chain wear

Posted: Sat Aug 10, 2019 6:35 pm
by Mirco
Hi,

I am running a SRAM RED Etap AXS now for about 7000km on my road bike, no rides during rain and maintenance every 400 to 500km with Innotech 105.

I am used to change 11 Speed Dura Ace chains after 6000 to 6500km, because the tool says it‘s time to change.

So, the SRAM chain does not show any wear when using the tool. Maybe SRAM is right, saying the new RED 12 Speed chain last longer, but I don‘t think 10000+ km or whatever.

Does anybody already changed a SRAM RED 12 Speed Chain due to wear using the AXS group?

regards

Mirco

SRAM RED 12 Speed Chain wear

Posted: Sat Aug 10, 2019 6:35 pm
by Weenie

Re: SRAM RED 12 Speed Chain wear

Posted: Sat Aug 10, 2019 7:12 pm
by ToughInTheStreets
Which tool are you using?

Re: SRAM RED 12 Speed Chain wear

Posted: Sat Aug 10, 2019 7:47 pm
by pdlpsher1
If you have a new chain around you can use the same tool and check the old chain against the new chain. It's not uncommon that chains between brands show different lengths even when new. Perhaps the AXS chains are a bit tighter than Shimano's out-of-the-box.

Re: SRAM RED 12 Speed Chain wear

Posted: Sat Aug 10, 2019 7:55 pm
by Bluechip
Good question. Does the new 12 speed chain need a new chain checker? Or are the important specs the same for measuring wear?

Re: SRAM RED 12 Speed Chain wear

Posted: Sat Aug 10, 2019 8:10 pm
by marcelflash
The Sram Red AXS chain has bigger rollers so the old chain tool does not work. I have not seen a new compatible tool.

Re: SRAM RED 12 Speed Chain wear

Posted: Sat Aug 10, 2019 8:43 pm
by Bluechip
Found the answer.
https://sram.zendesk.com/hc/en-us/artic ... ad-chains-

Park CC4 and Pedro chain checker Plus and Plus II.

Re: SRAM RED 12 Speed Chain wear

Posted: Sat Aug 10, 2019 9:33 pm
by Mirco
Yes, I also found the answer, Pedros Chain Checker Plus II will work.

Just ordered one.

regards

Mirco

Re: SRAM RED 12 Speed Chain wear

Posted: Sat Dec 07, 2019 9:06 am
by Bigmac
Sadly most the old tools won't work! That revised chain checker would seem a must have item albeit, it's a bit pricey!

Re: SRAM RED 12 Speed Chain wear

Posted: Sat Dec 07, 2019 9:06 am
by Weenie

Re: SRAM RED 12 Speed Chain wear

Posted: Sat Dec 07, 2019 2:42 pm
by DaveS
The rollers are .15mm or .006 inch larger in diameter, so a chain checker needs to be made specifically for the axs chains. Most chain checkers measure a mixture of elongation and roller wear. I measure elongation with a 12 inch precision machinists rule and roller wear with digital calipers.

It's common for campy chains to have little elongation, even when the rollers are severely worn. Campy has a recommended length to measure with calipers. What you're measuring is mostly roller wear and little elongation.

It's also common for the hole in the roller to wear much more than the roller diameter.