Pedal pendulum (pedal pendulum)
The pedal pendulum serves to minimize the bending of one of the knees, by reducing the pedaling circle and moving its center away from the cyclist.
In the image you can see, drawn in black, the circle that describes a normal pedal. A pedal fixed to the pendulum describes the circle seen in red.
The new model is adjustable in angle and allows you to compensate the angle in cranks that are not completely parallel to the frame.
DEMONSTRATION VIDEO (in English)