Green Wheel Turns Makes Any Bicycle Electric

Scientists at the MIT (USA) have developed the Green Wheel, a system that can power a bike with electricity and can be installed on any bike frame or wheel size.  The Green Wheel can provide enough power to travel approximately 35 km without pedaling and if pedaling, the range of miles can double if the traveler's speed is below 30 km per hour, the developers said. The Green Wheel can generate, store and propel power and can be charged by pedaling or by plugging it into the electric grid. It is composed of three main elements, an electric generator, batteries and an electric motor. It has the radius of a "small dinner plate" and 2 inches thick.