Pocket Bicycles: Portable Bicycle, Massachusetts, Down Tube, Small Wheel Bicycle, Bicycle Suspension

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pocket Bicycles was the name of a manufacturer of portable bicycles located in Massachusetts in the 1970s. While resembling many of the small-wheel folding designs of the time, the bicycle was distinctive in having no down tube, merely a cable that was kept under tension by the weight of the rider, thus saving weight and space. In addition, the cable provided a degree of vertical flex in the frame which acted as a suspension system, thereby absorbing much of the bumpiness of the ride normally associated with small wheel bicycles. A portable bicycle is a folding bicycle that is small and light enough to be easily carried afoot or in a cramped vehicle. Portable bicycles compromise riding capability for portability. The technology of portable bicycles constantly evolves, as new concepts and materials are proposed every few years.