Originally Posted by
egoist
Boy did I land in an expensive hobby. At 10,000 miles a year, you're talking 5 chains and 1 or 2 cassettes, maybe rings... not to mention tires, brakes, wheel truing, etc. It's going to be more costly than my car and I rarely use the bike for commute. Sounds like I better learn to do more maintenance myself!
Replacing after 1800 miles seems excessive to me. I've never really monitored avg miles I get out of a chain, but I would be surprised if I got less that 3k out of the SRAM and shimano chains I have used. At 10000 miles a year, with a cleaned , well lube drive train, I would say two chain changes , with one change of the casette and rings. But miles will vary depending on weather, maintenance, and riding conditions.