I was thinking of asking a question similar to the OP. I’m not sure if percent change answers my question. I use the same calculator, but in the flatlands we can have a narrower range as hills are minor. I won’t be going 35 mph down any hills, so any thing over 90 gear inches is not really necessary.
Asking a similar question; How many mph difference between gears do you like? In the flatlands with a closer ratio 2X7 it wouldn’t be too difficult to have mere 1 mph jumps between gears. I used to be interested in doing it that way. Now I am happy if gaps are maybe up to 1.5 mph, as anything closer feels like a shifting fixation. If it’s there I will do it, but 1.5 mph gaps seem okay, at least for now.
As an aside, I ran a 144 bcd as a half step 42-45 6 speed for awhile on my Trek and now have it as a 42-46 with a 5 speed 14-32 on my vintage Frejus.
Last edited by sd5782; 07-14-21 at 04:24 PM.
Reason: More info