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12-09-03, 05:31 PM
I have a Record-10 equipped bike with a Ti/steel cassette and a Wippermann stainless chain. The first chain was probably kept on the bike way too long (7000 miles, even tho’ it did NOT exhibit much stretch) but when replaced, the new one skipped on certain cassette cogs. Conventional wisdom suggests the extended use of the chain wore the cogs but opinions on this issue have varied widely. My gearing set-up (53/42/30 and 11-21) does result in my using the Ti cogs more than manufacturer’s predictions. Four questions: (a) how long should I get out of a Wippermann stainless (b) how long per cassette (c) is longitudinal chain stretch truly a good indicator (d) could there be a differential material incompatibility (Ti/stainless). Sorry ‘bout the long note … thanks for any advice. William