The Concept: A pneumatic system that replaces the chain. With every crank of the pedals, compressed air is pushed through the chain stays, which then turns the rear wheel, similar to the cannonade jack knife concept. However, one main difference in my concept (other than the pneumatic/hydraulic difference) is that when the rider is coasting downhill the bike will store up air inside the main chamber of the frame through a flywheel system. This also acts as an air brake and the stored compressed air can be released while pedaling uphill as an added boost (not meant for long propulsions or to replace actually pedaling). The frame of the bike can be manufactured through a process called super forming, which is essentially vacuum forming metal that is heated to very high temperatures, the tubing of the bike can be made lighter and completely air tight.
Compressor pneumatic bike from James Breaux
