Ebike Speed Sensor vs Torque Sensor, What Are the Differences?

Ebike Speed Sensor vs Torque Sensor, What Are the Differences?

What Is a Pedal-Assist Ebike?

  • A pedal-assist ebike, also known as an electric bike or e-bike, is a bicycle equipped with an electric motor that provides assistance to the rider's pedaling efforts. It doesn't solely rely on a throttle; instead, it enhances the rider's pedaling experience by offering variable levels of motor assistance.

  • What's A Torque Sensor?

  • A torque sensor on an ebike measures the force or effort applied to the pedals by the rider. It detects how hard you're pedaling and adjusts the electric motor's assistance accordingly. The more force you apply, the more assistance you receive. This creates a natural and responsive riding feel, as if the bike is seamlessly amplifying your own pedaling power.
  • What's A Speed Sensor?

  • A speed sensor on an ebike monitors the bike's speed by counting pedal rotations or wheel revolutions per minute. It provides information about how fast you're riding. The electric system uses this data to regulate the power assistance, adjusting it based on your speed. This is beneficial for maintaining a consistent speed or adhering to speed limits.
  • Differences Between Both Sensor Types

    Torque Sensor Speed Sensor
    1 Active engagement from the rider is necessary to activate the pedal-assist system with a torque sensor. The pedal assistant in speed-sensor systems is activated by the bike's forward movement.
    2 They measure the torque generated by the rider. Speed-sensor e-bikes are more affordable and popular compared to their torque-sensor counterparts, which tend to be more expensive.
    3 Torque sensors contribute to longer rides by conserving battery power, and in some cases, torque-sensor e-bikes can recharge batteries while the rider pedals. Due to reduced pedaling and increased reliance on the electric motor, speed-sensor e-bikes tend to consume more battery power.
    4 Torque sensors provide precise control over the required pedal assist at any given moment. In speed-sensor e-bikes, pedal assist activates when the rider falls below a certain speed, and this activation is less easily adjustable compared to torque-sensor systems.
    5 Torque sensor e-bikes are better suited for active riders who are comfortable with frequent pedaling. Speed-sensor e-bikes are suitable for older individuals or those with mobility challenges who may find frequent pedaling challenging.


  • In summary, while both torque and speed sensors contribute to the overall functionality of a pedal-assist ebike, they serve different purposes. The torque sensor responds to the force you apply to the pedals, offering a personalized and dynamic riding experience. On the other hand, the speed sensor regulates assistance based on how fast you're riding, contributing to a smoother and controlled ride. Together, they enhance the efficiency, comfort, and responsiveness of the electric bike, catering to the rider's preferences and varying riding conditions.

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