Patent ID: 8316709

Claim:
A method for measuring force, torque and output on an ergometer or a bicycle, comprising: transmitting torque from two pedal cranks, equipped with pedals, via a shaft to a wrap-around drive that has a belt pulley or a chain wheel connected fixedly in terms of rotation to the shaft in at least one direction of rotation, and to an ergometer flywheel or to a rear wheel of the bicycle; detecting elastic torsions of the shaft, which result from the torque transmission, via a separate sensor arranged axially on each side of the belt pulley or of the chain wheel independently of one another, as a measure of forces applied to the shaft generating corresponding sensor signals; and delivering the sensor signals generated for further processing to a storage and/or an evaluation unit to determine the torque and the output both of a left and a right leg of a user of the ergometer or the bicycle based on the elastic torsions of the shaft detected.