DieselnDust Posted May 22, 2020 Share Put an XX1 chain on my bike not even 6 months ago, and 2 months of that there has been no riding even, but lets just say 6 months worth of 50km a week, so 1200km, and it is at .5 wear already, not impressed.... you must be the only person in the world to have such high wear from a XX1 chain.What drivetrain is your bike fitted with? Link to comment Share on other sites More sharing options...
Grease_Monkey Posted May 22, 2020 Share I suspect you mean 0.25%....No, I mean 25%. 0.25 on chain checker tool = 25% of "allowable" stretch. Edited May 22, 2020 by Grease_Monkey DieselnDust and Wayne pudding Mol 2 Link to comment Share on other sites More sharing options...
Jehosefat Posted May 22, 2020 Share No, I mean 25%. 0.25 on chain checker tool = 25% of "allowable" stretch. If you run a 12 speed chain you are going to absolutely trash your cassette and chainring. They recommend you replace 12 speed chains at between 0.50% and 0.75% stretch. Link to comment Share on other sites More sharing options...
BaGearA Posted May 22, 2020 Share If you run a 12 speed chain you are going to absolutely trash your cassette and chainring. They recommend you replace 12 speed chains at between 0.50% and 0.75% stretch.You're missing what he's saying DieselnDust, Grease_Monkey, Wayne pudding Mol and 1 other 4 Link to comment Share on other sites More sharing options...
DieselnDust Posted May 22, 2020 Share If you run a 12 speed chain you are going to absolutely trash your cassette and chainring. They recommend you replace 12 speed chains at between 0.50% and 0.75% stretch. Well thats depends on the cassette. If its a >48T then 0.5% wear is the replacement point. You can run it to 0.75% but then you're in for a new cassette as well.<48 and 0.75% should be ok.But remember the longer you run the chain to maximum life the shorter the life of the cassette so I always replace well before the chain is worn. Link to comment Share on other sites More sharing options...
Jehosefat Posted May 22, 2020 Share You're missing what he's saying No I'm not. I'm not aware of any chain checkers that measure in "% of allowable stretch". On every chain checker I have ever seen, a measurement of 0.25 is 0.25% stretch and not "25% of allowable stretch" as he claimed. It would make no sense for it to measure "% of allowable stretch" since, as has been pointed out a few times, allowable stretch differs depending on drivetrain (e.g. 12x, 11x, max cog size etc.) 0.25% stretch is between 33% and 50% of "allowable" stretch. Edited May 22, 2020 by Jehosefat Link to comment Share on other sites More sharing options...
DieselnDust Posted May 22, 2020 Share No I'm not. I'm not aware of any chain checkers that measure in "% of allowable stretch". On every chain checker I have ever seen, a measurement of 0.25 is 0.25% stretch and not "25% of allowable stretch" as he claimed. It would make no sense for it to measure "% of allowable stretch" since, as has been pointed out a few times, allowable stretch differs depending on drivetrain (e.g. 12x, 11x, max cog size etc.) 0.25% stretch is between 33% and 50% of "allowable" stretch. ....that depends on what allowance is making Link to comment Share on other sites More sharing options...
MTB-More Posted May 22, 2020 Share Well thats depends on the cassette. If its a >48T then 0.5% wear is the replacement point. You can run it to 0.75% but then you're in for a new cassette as well.<48 and 0.75% should be ok.But remember the longer you run the chain to maximum life the shorter the life of the cassette so I always replace well before the chain is worn. I go by the 1, 2, 4 rule (Some do 1,2,6) 1 Casette lasts 2 Chainrings and 4 chains. I swap the chains at 2000km marking them as 1,2,3,4 as they wear and on 4 go back to 1 to give it another 2000km life That way you get around 16000km out of the Casette and 4 chains as they wear uniformly as you keep on swapping the chians. Edited May 22, 2020 by MTB-More Hairy, DieselnDust and Super Sywurm 3 Link to comment Share on other sites More sharing options...
Longbarn Killer Posted May 22, 2020 Share https://community.bikehub.co.za/topic/116861-boast-about-your-latest-purchases-here/?p=3663075 Another one Link to comment Share on other sites More sharing options...
BaGearA Posted May 22, 2020 Share No I'm not. I'm not aware of any chain checkers that measure in "% of allowable stretch". On every chain checker I have ever seen, a measurement of 0.25 is 0.25% stretch and not "25% of allowable stretch" as he claimed. It would make no sense for it to measure "% of allowable stretch" since, as has been pointed out a few times, allowable stretch differs depending on drivetrain (e.g. 12x, 11x, max cog size etc.) 0.25% stretch is between 33% and 50% of "allowable" stretch.Okay Wayne pudding Mol 1 Link to comment Share on other sites More sharing options...
boesman88 Posted May 22, 2020 Share https://community.bikehub.co.za/topic/116861-boast-about-your-latest-purchases-here/?p=3663075 Another one ???? ChrisF 1 Link to comment Share on other sites More sharing options...
snutkin@gmail.com Posted May 22, 2020 Share No, I mean 25%. 0.25 on chain checker tool = 25% of "allowable" stretch. If you think 1% is " "allowable" stretch" on *any* chain, much less a 12 speed chain, good luck to you! Link to comment Share on other sites More sharing options...
Grease_Monkey Posted May 22, 2020 Share If you run a 12 speed chain you are going to absolutely trash your cassette and chainring. They recommend you replace 12 speed chains at between 0.50% and 0.75% stretch.Read my post again. Link to comment Share on other sites More sharing options...
Grease_Monkey Posted May 22, 2020 Share If you think 1% is " "allowable" stretch" on *any* chain, much less a 12 speed chain, good luck to you!Not what I said. I tend to get 10,000km out of my Sram cassettes. Wayne pudding Mol and DieselnDust 2 Link to comment Share on other sites More sharing options...
snutkin@gmail.com Posted May 23, 2020 Share Not what I said. I tend to get 10,000km out of my Sram cassettes. Chains don't stretch. They wear. And no, it's not the same thing. There's no such thing as "allowable stretch". So nobody knows what you actually really said. Including yourself. I reckon you probably measure kms the way you measure chain wear. Link to comment Share on other sites More sharing options...
Grease_Monkey Posted May 23, 2020 Share Chains don't stretch. They wear. And no, it's not the same thing. There's no such thing as "allowable stretch". So nobody knows what you actually really said. Including yourself. I reckon you probably measure kms the way you measure chain wear.Chains definitely do stretch, the also wear. Two seperate things. I know what I said, and I know how a chain checker works. I used the term "allowable" for lack of a better term, that's why it's in parentheses. Lockdown seems to be getting to people. You're getting way too emotional over a comment made in a bike forum. DieselnDust and Captain Fastbastard Mayhem 2 Link to comment Share on other sites More sharing options...
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