How to change motorcycle engine chain drive into shaft drive

This is very difficult. The power output end of the auxiliary shaft of the engine can refer to the conversion structure of a three-wheeled motorcycle and be converted into a shaft transmission mode. The key is the rear wheel. It is difficult to have a large and small figure-eight wheel to transmit power to the rear wheel. For similar structures, please refer to the lower MX50 rear wheel drive structure for imitation.