Bicycle and spider capable of measuring power

A bicycle capable of measuring power is disclosed. The bicycle comprises a spider including a torque input section and at least one torque output section; a crank assembly coupled with the spider through the torque input section and applying an input torque to the spider; a chainring mounted to the spider through the at least one torque output section and receiving an output torque from the spider; a gauge disposed and oriented generally along a tangential direction or a quasi-tangential direction with respect to the torque input section and the at least one torque output section; and a circuitry coupled to the gauge and receiving a signal from the gauge. 本发明提供一种可测量功率的自行车。所述自行车包含爪盘，具有力矩输入部与至少一力矩输出部；曲柄组件，通过所述力矩输入部与所述爪盘耦接，并向所述爪盘施予输入力矩；链轮，通过所述至少一力矩输出部安装至所述爪盘，并自所述爪盘接收输出力矩；量规，设置于大致朝着所述力矩输入部与所述至少一力矩输出部的切线方向或准切线方向；以及电路，与所述量规耦接，并接受由所述量规所产生的信号。