I highly recommend against riding without brakes on a fixed gear. Have the brake at least on there just in case. You don't have to use it, but at least have it there for emergency stops. I tried that whole no brake thing, and I was pretty dumb for doing it. Bike looks super clean without it, and love the extra space on the bullhorns, but my life is more important than the looks. Put it back on after 2 weeks and am glad that I did.