I am wondering is there is some calculation to relate reletive effort vs power for different size rings.
I ran a 30x9-46 cassette last year and the granny was just right for high Alpine +10,000ft rides. Maybe a bit excessively deep down low.
If my FTP bumps up 10 %, does that = a 2 tooth bigger ring to keep the reletive effort on the climbs the same? Is there a way to guess that without swapping rings back and forth in the spring?
I ask because I want to take a stab at sorting out the drivetrain over the winter and not waste a few hundred dollars on rings and chains jumping up 2 teeth at a time.
Maybe I am just a nut job😋