Man you guys have some talent. I wanted to build one of these but just never found the engine that would satisfy. This might not be a bicycle but its what I got to quench my thirst.
Its a Honda cb50r "dream" Not street legal. track only, no lights or ignition, bump start only and a six speed tranny rounds it out. I live in Chicago. We have a strip of highway along our lake called Lake shore Drive. Its about 30 miles in length and speed limit is 40mph. This bike tops out at 55mph with the wind at my back. It puts out about 8hp at 14,000 rpm! With a full tank of fuel it weighs about 150lbs. I live at one end and work 6 miles down. I use this bike exclusively for that commute. To make it "street legal" I put bike lights front and rear and an air horn.