Arm propulsion system for bicycles which can be combined with conventional leg propulsion

摘要

This is a new arm propulsion system for bicycles which can be combined with conventional leg propulsion. The system comprises two cranks alongside each other applied to the handlebar attachment by means of a support, rotating in a vertical plane parallel to the axis of the wheel. The handles of the cranks are alongside each other in such a way as to perform a movement of the rowing type. The cranks are connected to the front wheel by means of a gear wheel and chain fitted with a chain tensioner and chain guide. IMAGE