| 摘要 |
This invention concerns a bicycle to which substantial modifications concerning ergotechnic positioning have been introduced in order to obtain a man/machine combination with a velocity performance higher than that of conventional racing bicycles. The substantial modifications have been introduced to the frame, to the motion transmission system, to the handlebar assembly and to the saddle assembly. The frame has triangular geometry where in the front vertex there is the handlebar assembly, in the rear vertex the propulsion assembly, and in the intermediate vertex, that is placed upwards, the saddle assembly. Between the intermediate vertex and the rear vertex of the frame, the appendices that form the rear wheel fork are located, the same wheel is locked rotationally in an intermediate position to the appendices included between the initial part and the end of said appendices. The propulsion assembly is comprised of two separate assemblies, rotationally attached to the ends of the appendices that form the rear fork. The motion transmission and the contraposition of the pedals are guaranteed by the connection between the rear chain wheel sprocket, found in the pedal propulsion assembly, and the chainrings, found at the end of the shaft, by means of two lateral chains. The assemblies that form the pedal propulsion assembly are cantilevered with respect to the rear wheel hub. The length of the end of the appendices, forming the rear wheel fork, does not exceed the circumference of the rear wheel.
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