Originally Posted by
chephy
Maybe you right, perhaps some people can see it. I can't. The only thing I can see is non-symmetry that was engineered into the cassette from the start.
AFAIK, they are not made perfectly symmetric this day, for the better shifting performance or some such reason.
Well, not everyone can see it. I changed my chain while it was still in the "safe" zone (according to my lil' Park chain measuring thing). It's a new bike with under 2000 miles. Chainring looked okay to me, although that's not a problem I've dealt with before, but I couldn't get it to stop skipping in my mid gears (the ones I spend most of my time in). LBS couldn't figure it out, either, and was in the process of trying to replace the freehub when they finally figured out it was the cassette.
I'm wondering if that's always going to be a problem or if it was just that that first cassette was not so good. All the parts under 2,000 miles, and the chain not stretched more than recommended, so I wasn't expecting it, and I'm wondering if I'm regularly going to have to change my cassette with my chain.