The most appropriate saddle height is calculated by statistics (under the stock size x 0.885). The formula of the pedal axis center to distance, as well as the sole thickness into account, so the difference between the amplitude of 10 ~ 20 mm should be taken into account....

Actually the frame size usually refers to the bottom bracket (axial and the location of the foot) is to install center to the front of the frame on the triangle tube electric contact center height. ...

​Select box, high high carbon fiber wheel conforms to the aerodynamic and light and fast is the characteristics of it. But as a result of carbon fiber car frame is through manual laminated carbon fiber cloth......