I used to ride 48/16 on my stock Kilo TT. Everytime I try a hill, i feel like dying. But today, i put on a 19t surly cog in the back and the quickness of the bike is absolutely superb. I havent tried any downhill runs yet, so I don't about the spinning yet but that's why I have brakes.

oh, and its a ******ed idea to take off the front brakes if you already have them on. IMO