Converted my Miyata 110 to a fixed last night and went for a 5 mile maiden voyage in the rolling hills of Eastern PA. Nothing but swapping in a flip flop rear wheel for a 42/16 combo and adjusting the chain. I didn't even take off the shifters and derailleurs just in case it wasn't fun. I had one forgetful moment that I was on a fixie as I attempted to coast around a curve and promptly got tossed above the saddle but landed back on safely. Definitely requires some adjustment to the thought process. I could not imagine fixed without brakes and my clipless shoes/pedals. However, it was fun enough that fixed may be my commuter of choice this week.