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For the last 2500 miles I’ve run an 11 speed ultegra di2 drivetrain without issue. However, the chain is too worn to continue and took the cassette with it, so I replaced both – the chain with a wipperman 11speed, the cassette with a 105 11speed. Same ratios (or as close as possible).
The ultegra drivetrain was absolutely silent, but its replacement has a loud “glistening” sound that I can’t solve. It also doesn’t index quite as quickly, usually in the smallest cogs.
Is this likely to be the chain, cassette, or both? I’ve done about 200 miles on them and they show no sign of quietening down. I don’t mind going back to ultegra but if there’s a simple fix I’m unaware of I’d rather try that first. Hub is a Royce ultralight, it had no spacers on the ultegra cassette and has none on the 105 either.
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