I've never understood why people like to slog along slowly in a mammoth gear on a fixed-gear bike on the road. For fixed-gear road riding, I've been using a 72-inch gear since I got my first track bike, in 1964. I believe that that's about the same as the Brits used for most of their fixed-gear riding in the 1950's. I got very good at spinning while training with my teammates, who were all riding road bikes.