Sada
Sada Bike is a hubless folding bicycle with 26 inch wheels. The large wheels support a comfortable riding posture similar to that of a standard bicycle. Each wheel is held at three points: the front points are set in the fender structure, while the rear points sit inside the rim. A chain transmits motion to a lower wheel, which transfers torque to the rear rim. The frame turns around a single central fulcrum, so the whole structure closes with one movement into a shape close to the size of an umbrella. The folded bicycle can be carried on the shoulder or moved as a trolley.
