Design and Fabrication of Chainless Bicycle

In this paper, design and fabrication of chainless bicycle is discussed with the concept to provide a dynamic change to primarily existed bicycles with chain drives which helped the people to cover the paths or distances on wheels, after understanding the need & use of wheels. And recently, bicycles with shaft drives have been developed with unique advantages & better efficiencies. For project-making, the conventional shaft-drive was better suited over its cost & flexibility. The shaft drive uses a shaft instead of a chain to transmit power from pedals to wheels. Here the mechanism is equipped with ball bearings connected with shaft-drive, for high power transmission to wheels. Bearings along with the characteristic of minimizing friction save the energies of people. Pedaling works at a smooth pace to transmit the power from forward sprocket to backward sprocket with bearing-shaft-bearing network. This system will also achieve the variable speeds like internal-gearing systems, but it is better than those systems in several manners. Our work is aimed to reduce the power wastage (human energy) by using light weight drive shaft connecting with ball bearings to make the design standardized.