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What's the current consensus on chain wear tools? I just bought the park tool cc3.2 and the 0.5 wear indicator fits into the chain but not the 0.75. System is an 11spd. Replace chain or not?
I think 11-speed and up Park recommend replacing at .5%, 10-speed and below is .75%.
Best wear tool? The longest steel rule you can find. The longer the length of chain you can measure, the more accurate your results. Plus, if you're measuring from pin to pin, you're not adding in the wear of a roller.
Best wear tool? The longest steel rule you can find. The longer the length of chain you can measure, the more accurate your results. Plus, if you’re measuring from pin to pin, you’re not adding in the wear of a roller.
Fair, still leaves the question of when to consider it as worn though, what percentage?
0.5% for me on 11 and above.
0.75% on 9 and below.
Never had 10 speed.
I've run my 11sp to .75 and even 1 and it's been fine, cassette took new chain ok.
Shimano road if it makes a difference
Plus, if you’re measuring from pin to pin, you’re not adding in the wear of a roller.
The wear on the rollers is exactly what you're supposed to be measuring!
No it's not. It's the wear between the pin and the inner link that causes the chain to "stretch". Even if you take the rollers off the chain, pin to pin is still ½"
In fact, if the rollers wear evenly, no matter how worn they are, front face to front face will always be ½" as well
Use the tool you've just got, it's fine.
You're supposed to change at .5, but you'll probably get away with letting it go a bit longer.
I've only realised quite recently that it was supposed to be .5, and got good life out of my cassettes changing at .75 or after before.
Perhaps if I changed religiously at .5, my cassettes would last five years though?