FIELD: transportation.
SUBSTANCE: bicycle drive with the external arrangement of the two-shaft interaction system comprises an input shaft with a driven sprocket and an output shaft. The sprocket is a wheel in the two-shaft interaction system. On the wheel, axes are rotatably mounted along the circumference. Gears having engagement with a gear on the output shaft are fixed on the axes. A brake gear having engagement with the gears is arranged coaxially with the output shaft axis. The effect of the input shaft on the output shaft is made by braking the brake gear by means of brake couplings or brake shoes.
EFFECT: changing the gear ratio without changing the position of the sprocket and the gears, included in the device.
10 dwg
