This is my first fixed gear. Bought the frame and then scavenged most of the parts from my spares bin. I'm running a 44 x 18 for now...seems fine for general use and is kind to my legs which are not used to having just one gear!
I didn't appreciate how much clearance there was in the 1x1 frame or I would have probably have used some 700c wheels.
I've swapped in some smaller pedals for more clearance on turns and ditched the bar ends because they tweaked my wrists on that angled bar. Other than that the bike is running nicely.