Have some downtime at work and I wanted to start looking around for freewheel gears for my Kilo TT (the soreness of a FG from the weekend may also fuel my decision too haha).

Basically, this weekend I found myself loving the FG, but on my last leg of the ride I would have really liked to be able to switch over to a SS (I live in Queens, NY by the way), which would have made my life a little easier. So I began to look around the forum and came up with a few ideas that I wanted to see what you guys thought.

So I started to calculate my GI for my Kilo TT as it comes from BDL

69GI = 23 x (48/16) (the equation I pulled from Wikipedia so hopefully its right).

I like this gearing however and find myself only ever using the single speed if I was incredibly tired. So I wanted to stay somewhat close to this and was considered a 17T or even keeping it at a 16T (I really think being able to coast would be a huge improvement for me when I was tired). I calculated a 17T to be a 64.9 GI. Somewhat close still.

Again with me living in NYC (not too many hills - just the bridges would be the "hilliest") do you think a 16T would be the right choice or would a 17T be a better fit? I was reading guys having 18Ts with a 48T chain ring, but I think that is way too low for my surroundings/riding.

Thanks guys.