Originally Posted by beng1

The biggest factor in bicycle speed is the rider, followed by the rider getting horizontal on the bike, and a distant third is having specially shaped bicycle parts and clothing. You do not need a "TT" bike to get horizontal, riders of standard road bikes have been doing this the last century by simply having a properly sized bike so that they can put the seat up high enough in relation to the handlebars to get their body into a horizontal position. You would be able to go 22mph or faster on your "road" bike if you adjusted it's riding position, or if it were properly sized to allow you to get into a good position. 1973 Huffy Scout ten-speed: