Join Date: Sep 2008
Location: Loveland, CO
Bikes: Two LOOK 585s, one KG461
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Readings from a Park chain checker are worthless. Double check with a precision 12" rule.
Campy 10 chains will last longer than any other brand I've ever tested. Properly lubed, you'll never reach .5% elongation when the roller wear and side clearance have both become excessive. I let the roller spacing increase by about .040 inch before retiring a chain.
Don't toss a cassette until you've installed a new chain and actually get chain skip on one of more cogs.
If you want the ultimate in chain and cassette life, alternate the use of several chains, changing each one before it's half worn. As long as you get the last chain in the rotation on the cassette without encountering chain skip, you'll never get any chain skip in the future and can use each chain for until it elongated by at least .5%.
Last edited by DaveSSS; 07-26-09 at 08:13 AM.