What is e-bike pedal assist?

The e-bike pedal assist system, also known as electric pedal assist or simply PAS, is a feature in electric bicycles that provides assistance to the rider when pedaling. The system uses sensors and a motor to detect the rider's pedaling input and provide additional power accordingly.

Here's how the e-bike pedal assist system typically works:

Sensors: The e-bike is equipped with sensors that detect the rider's pedaling motion and rate. The most common sensor types are cadence sensors and torque sensors.

*Cadence Sensor: This type of sensor measures the rotation speed of the pedals. It detects whether the rider is pedaling and triggers the motor assistance based on a predefined pedal rotation speed.

*Torque Sensor: A torque sensor measures the force exerted on the pedals. It detects the rider's pedal pressure and provides assistance accordingly. Torque sensors provide more dynamic and responsive assistance based on the rider's effort.

Motor Assistance: Once the sensors detect the rider's pedaling input, the electric motor is activated and provides additional power to assist the rider's pedaling effort. The motor assistance can vary depending on the selected assist level or mode.

Assist Levels: Most Young e-bikes offer multiple assist levels ranging from 1 to 5. These levels allow the rider to choose the desired amount of assistance. Higher levels provide more assistance, while lower levels offer a more natural and less powerful boost.

Speed Limit: Young E-bikes have a maximum assisted speed limit （28mph by pedal assist while 20mph by the throttle). Once the rider reaches the speed limit, the motor assistance gradually decreases or cuts off completely.

The pedal assist system offers several advantages, including extending the rider's range, reducing fatigue, and making cycling uphill or against headwinds more manageable. It promotes a more active and engaging riding experience while still providing electric assistance when needed.