oh boy, heres one to get people crazy.
latest on my current fast bike ( tarmac )..
130 crank but 50/ 39
cassette ..finally bumped from 12-23 to a 12-25.
i totally love the 50t big ring..
i have always used a 52 only.
now i can use the 50 for whole club rides.. just use the middle of the cassette mostly.
easy can pedal up to around 32mph in the 50-12... never go above that anyway.
digging it big time.