transmission of motion between the rear wheel and the front (four-wheel drive) for bicycles - scooters and bikes

摘要

Two-wheeler with transmission means for both front and rear drive, of the type comprising a frame (11) bearing a front wheel (12) and a rear wheel (13) driven by a chain transmission means (14), which, in its turn, is driven by driving organs (15) and which interacts with a plurality of sprocket wheels installed on a hub (17) of the rear wheel (13), wherein, between the sprocket wheels of the rear wheel (13) and a hub (38) of said front wheel (12), there is interposed a drive transmission means, of disengageable type, which transmits the driving motion also the front wheel (12). IMAGE