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I dump chains at around 0.75% wear, which here in Yorkshire on a mountain bike means around 1000-1500km or thereabouts. Cassettes and chainrings last a goodly amount of time when I stick to this, although obviously they do wear eventually.
Interesting - I'm also slopping about in Yorkshire mud and have found that if I let it go to 0.75, even if only just, it's Slippy McSlipface and a new cassette time - I've had to start swapping when the 0.5 side of the gauge goes in (smoothly).
Shimano 3 x 10.
EDIT: And 3 x 9 (also Shimano)
Interesting - I'm also slopping about in Yorkshire mud and have found that if I let it go to 0.75, even if only just, it's Slippy McSlipface and a new cassette time - I've had to start swapping when the 0.5 side of the gauge goes in (smoothly).
Hmm, I have to admit that I do change at no more than 0.75% (i.e. not 3 months after I noticed that it was there) so perhaps we're not a long way different. I'm on Shimano 2x11 and it seems reasonably forgiving (apart from the shit jockey wheels 🙂 )
Note, this is measured pin to pin, rather than with the gauge, so this may also make a difference.
ps. Regarding rollers vs fishplate wear, perhaps my earlier statement wasn't quite accurate enough - when I say I "measure pin to pin" I don't mean literally the distance between two pins, but rather the length of the chain measured over 12" with a steel ruler and then worked out as a percentage stretch. This being the case, I suspect we may be talking about the same thing.
I use all three chainrings, with the bigger one being the most used. I also climb a lot, so need the small one too. In fact, I think the middle chainring is the least used.
I know how chain wear actually works, I've researched about that a while ago. But thanks for the info!
I have now replaced the new chain with the old one, and everything works just fine. I'll use it this way until problems occur. I measured it once again before putting it back on the bike and still got 25.55cm at 10 pins. The new one measures about 25.4cm.
You use the big ring the most?
Either you ride on the road all the time or you're Chris Hoy.
there are a number of suggestions above that when you change to go 1X..
Is there any user experience that says that this extends the life of chain/cassette/chainring? or is the 'advantage' that you only have one chainring to replace?
I would expect that the wider deviation from a straight chainline would wear the chain faster, than you might expect with a properly used 3X setup... just wondering what the real life experience is?
not really noticed any difference in wear rates, can still do 2/3 cassettes per chainring by rotating chains or replacing frequently.
My other hypothesis is that changing gear is bad for chains (vis a vis my singlespeed chain goes on for ever, never broke one, have broken several on geared bikes) as the chain is forced over shifting ramps and often if you're hamfisted like me, under load as well. And of these changes, the front one is the most likely to be messed up. Hence - no front shifts = least likelihood of it wearing or breaking.
That drive train is goosed. I'd run the whole lot into the ground then replace the lot in one go