The French folding bicycle of 1896, this folding mechanism is designed so that the beams and diagonal beams can be folded and carried directly on the back. However, the frame was definitely a steel frame, and the weight would not be light.
author:Small column bike
The French folding bicycle of 1896, this folding mechanism is designed so that the beams and diagonal beams can be folded and carried directly on the back. However, the frame was definitely a steel frame, and the weight would not be light. It is mainly used for rapid deployment, reconnaissance and delivery of letters.
Such a design has been adopted by manufacturers until now, and it is used on folding bicycles with large wheel diameters, and it is easy to carry them with a car bag.