I don't know about "tremendous drag"... An OverSize PulleyWheel mech cage replacement saves 2-5 watts by almost doubling the size of one pulley, and adding a few teeth to the other for a total of twice as many teeth. That's not exactly "tremendous", and the equivalent of just below middle of a 12 speed the cassette to the smallest cog.
Sept. 7, 2023, 3:35 p.m. - Justin White
I don't know about "tremendous drag"... An OverSize PulleyWheel mech cage replacement saves 2-5 watts by almost doubling the size of one pulley, and adding a few teeth to the other for a total of twice as many teeth. That's not exactly "tremendous", and the equivalent of just below middle of a 12 speed the cassette to the smallest cog.