The most straightforward way to tell if an e-bike is using a torque sensor is to try pedalling continuously with the lightest gear ratio. Generally speaking if the bike is just using a pedal sensor, the power output will not correlate with the pedalling effort, i.e. the bike will keep accelerating.

Torque is a fundamental parameter in the performance of a mechanical transmission system [1]. The use of appropriate torque measurement devices to measure and control torque online and in real time is of great importance to ensure the stable operation of the whole system. Most of the current electric bicycles are driven by hub motors, which are placed at the front or rear wheels of the bicycle, causing the centre of gravity to lean forward or backward, which is not in line with people's riding style, and the speed of the bicycle is completely dependent on the handlebar control, which is a major traffic hazard.

Speed Sensor vs Torque Sensor, What Are the Differences? If you are to purchase an ebike and are doing research on which one you should own, you may hear about two kinds of sensors — speed sensor and torque sensor. Different ebikes for sale apply different sensors. As it is an essential component of an ebike, you must understand which one of them fits you and meet your requirements. In this article, we will share with you all the details about both the speed and torque sensors, including their pros and cons and advice for making a choice between them, just stick with us.What Are Ebike Sensors? Whether it is torque or speed sensor, both of them are all about PAS(pedal assist system). They send a signal to ebike motors to activate the PAS, but how they determine the output of PAS is different, which can have a huge impact on ebike performance. We will talk about exactly how they work in detailA speed sensor is called a cadence sensor as well. Basically, an electric bike with a speed sensor is a better choice for amateurs as it requires fewer efforts to reach a higher speed. It determines the output of PAS by setting it on the display. A speed sensor could be pretty flexible as it determines the power output of the PAS based on the display settings. However, if you want to gain more comfort with it, it is recommended to shift to a lower gear because it will take fewer efforts to pedal to send the signal. Taking  an example, it has 7 levels of PAS, and the output of each of them can be set on the display. Once you start to pedal, the speed sensor will send a signal to the motor, making it provide the set power output to the ebike.