>>1692289i want to know this too
i've seen drivetrain wear estimated at some miniscule amount, like 2-5W on a total of 250W, and 15-20W if you were to ride a dry chain (0 lubrication)
but how do i tell if my chain just looks like shit from road dirt it picks up or if it actually IS shit and needs replacement because no amount of cleaning and lube is going to get it back in shape?
it's not obviously rusting or anything, but i bet the poo i bought the bike from didn't change it so that would put 5 years on it
