An up and down movement of the 36cm long pedal rod gives a 1:3 rotation ofcog 1, or 50cm / 3 3D 16.66cm rotation. Cog 5, fixed permanently to cog 4, isdriven by cog 1 via the unattached cogs 2, 1.388 revolutions (16.66cm cog 1 :12cm cog 5 3D 1.388). Cog 5 produces a rotation of 1.388 revs x 46cm (thecircumference of cog 4) 3D 63.85cm rotation. Cog 9 (12cm circumference),which is fixed to the back wheel of the bicycle that has a circumference of2.20m, gets 5.32 rotations from cog 4 (63.85cm / 12cm 3D 5.32 revs) x 2.20m(circumference of rear wheel) 3D 11.70m distance travelled for a single upand down motion.
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机译：36厘米长的踏板杆向上和向下移动可将齿轮1旋转1：3，或将50厘米/ 3 3D旋转16.66厘米。齿轮5永久固定在齿轮4上，由齿轮1通过未连接的齿轮2驱动1.388转（16.66厘米齿轮1:12厘米齿轮5 3D 1.388）。嵌齿轮5产生的旋转为1.388转x 46厘米（嵌齿轮4的圆周）3D旋转为63.85厘米。嵌齿轮9（周长12cm）固定在周长为2.20m的自行车后轮上，嵌齿轮4（63.85cm / 12cm 3D 5.32转）x 2.20m（后轮周长）3D旋转5.32转一次向上和向下运动需要行驶11.70m的距离。
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