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Am I the only one who swapped a worn chain and suddenly the whole drivetrain felt wrong?
So I finally replaced the chain on my commuter bike after about 2,500 miles. I checked it with a chain tool and it was way past 0.75 percent stretch, so I threw on a new one. Rode to work the next morning and it felt like I was pedaling through mud, with the chain skipping on the two cogs I use the most. Turned out the cassette was worn to match the old chain, so the new one couldn't sit right on those teeth. I put the old chain back on for now and bumped the new cassette up my shopping list. Anyone else run into this where the cheap fix just makes the real problem show up?
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eva_adams688d ago
Did you know this is pretty much expected once you get past 0.75 percent? I read on Sheldon Brown's site years ago that the chain and cassette wear together, so a new chain on a worn cassette will skip every time. The old chain stretched to fit the worn teeth, and now the new one just can't seat right on the cogs you use most. That's why the skipping shows up on your two favorite gears and not the rest. Some folks try to stretch it out by riding easy for a while, but it rarely works and you risk dropping the chain. Best bet is to keep the old chain on until the new cassette shows up, like you did. Next time, check the chain earlier so you replace it before the cassette wears down.
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