All-terrain bicycle for e.g. sports practice, has frame with hole receiving bottom bracket shell having pedals of size equal to that of foot and elliptical chain wheel, where pedal has short bent in middle of plain and horizontal part

摘要

The bicycle has a frame (1) disposing a steering column receiving a fork (2) equipped with a front wheel (10) and a stem (11) with a handlebar (12). The frame has a hole in the middle to receive a bottom bracket shell with larger pedals (16) and a chain wheel (5) of elliptical shape. The pedals have a size equal to that of a foot, a main plain and horizontal part to place the foot and a short bent in middle of the horizontal part. The short bent is formed in the middle of the main plain and horizontal part at an angle of 15 degree in the direction of dispatcher of the pedal.