Originally Posted by
Psimet2001
If you dig deep you will find many threads were Dave and I in particular have gone around about chain wear.
Only because roller wear does not create a change in the chain pitch. It's relevant, but 5-10 times greater than the pin/bushing wear that causes elongation. You can't mix the two and consider them as equals. A worn pin/bushing has .0025 inch of wear and a pair of rollers, .025-.040.
Measuring only the elongation (properly with a ruler) works fine for chains that elongate quickly. The chain will have .5% elongation around the same time that the rollers are shot. Not so with all chain brands and models.