In this article, we’re diving into what the PAS system is — the pedal assist system on electric bikes. We’ll explain why Delfast includes it in our designs and whether it’s really necessary for riders.

Electric bikes are a unique hybrid between traditional bicycles and motorized vehicles. Without human effort, they’d just be scooters. But with pedaling, they become something more efficient and eco-friendly. The idea of combining human power with an electric motor was born out of necessity, not just convenience.

Back in the early days of motorized bikes, motors were weak and unreliable. So, cyclists needed to pedal to keep moving when the engine failed or when climbing hills. As technology improved, motors became stronger and more reliable, making pedals seem less essential. However, pedal assist systems (PAS) have continued to evolve and remain a key feature in modern e-bikes.

Today, electric bikes are more than just transportation — they're smart devices that use advanced electronics to optimize performance. PAS helps you ride more efficiently by syncing the motor's power with your pedaling. This means you can go further on one charge and enjoy a smoother ride without overworking your legs.

One of the main reasons many countries require PAS on e-bikes is safety and integration into existing cycling infrastructure. It allows e-bikes to function like regular bikes, which makes them easier to regulate and use on shared roads and paths.

There are different types of PAS systems. Some use simple sensors that detect pedaling motion and activate the motor accordingly. Others use torque sensors to measure how hard you're pushing the pedals and adjust the motor support in real time. These systems are especially common on mountain e-bikes where efficiency and control matter most.

At Delfast, we believe that pedal assist isn’t just a feature — it’s a game-changer. It extends battery life, reduces strain on the motor, and gives riders more control over their ride. Plus, it makes the experience more natural and enjoyable, bridging the gap between traditional cycling and electric mobility.

Whether you're commuting through the city or exploring off-road trails, a pedal assist e-bike offers the best of both worlds. And that’s exactly why Delfast continues to develop and improve this technology for every rider.