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@wrecked
Bought a brand new chainset about 2 weeeks ago, stuck it on; no problem. Bought a new chain today, installed it and there's a very strange, crunching noise coming from the driveline. Chain is identical (Izumi) and just to be absolutely sure, took the new chain off, stuck the old one on and guess what, the noise is gone. The noise only seems to happen when I put down pressure (e.g. when I'm out of the saddle or going uphill). I have a strange theory but I just need someone to agree/disagree with me on this. I think that the chainring was brand new and the initial groves and wear that it developed was from the worn chain so now that it's a brand new chain, the wear doesn't match and so I just have to wear the chain in.
Any opinions?