would you advocate 2 chains per life of a cassette
At least, maybe more. Depends on the cassette, though. Not worth chucking a new chain on every 3 months if it's only an HG50 cassette, but on DuraAce/Red/Record you probably save more cassette money than you spend on chain money.
At least, maybe more. Depends on the cassette, though. Not worth chucking a new chain on every 3 months if it's only an HG50 cassette, but on DuraAce/Red/Record you probably save more cassette money than you spend on chain money.