Gear Inches question
I'm upgrading my drive-train. Right now I'm @ 72 gi's (48/18) - and I have no problems with that, but I want to go a bit faster and spin a bit slower. My daily ride is mostly flat, but it gets windy sometimes and my house is on a hill.
My shop guy suggested I go up to 81 (48/16). I decided not to and went one size down from his suggestion (46/16). So when my stuff comes in, I'll be @ 77 gi's.
I'll probably throw a 17 cog on the other side for windy days and that will be 1 more gear inch from where I'm at now. I'm just curious about the consensus of whether 5 gear inches is a significant jump on a fixed gear.
I'm also shortening my crank length form 172.5mm to 170 btw.