You will have the safest and most comfortable riding position if you adjust the saddle height so that you can straighten your leg with your heel resting on the pedal at its closest point to the ground (see left).
وعندما تفرشخون فوق القضيب الممتد امام المقعد ،‏ ينبغي ان تصل قدماكم الى الارض (‏ انظروا اعلاه )‏ .‏