Ta very much for that YoungOldBloke. I am just about on that ( or will be in a few weeks ). My KMC SL chain has lasted extremely well and I`ll be changing for the same again. Think I`ve about 5,000 K on it ( accidentally reset my comp a few months back ) which is pretty remarkable for such a light bit of kit... got about half that on my original Ultegra chain ! Anyway ta again for the supplied info.
Have you checked the chain for stretch all the way around it's length rather than in just one position? Surprisingly stretch does vary along the length of the chain. I have found some sections have stretched more than others. I change a chain when between 0.75 and 1.0 and have not observed any ill affects to the cassette, chain rings or jockey wheels.
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On my fixed the chain is full of tight and loose spots but its a cheap one from the local market and its been on for about ten months now.
Have you checked the chain for stretch all the way around it's length rather than in just one position? Surprisingly stretch does vary along the length of the chain. I have found some sections have stretched more than others. I change a chain when between 0.75 and 1.0 and have not observed any ill affects to the cassette, chain rings or jockey wheels.
On my fixed the chain is full of tight and loose spots but its a cheap one from the local market and its been on for about ten months now.
That's more likely to be down to a chainwheel which isn't quite round or not mounted concentrically.