Torque Sensor vs PAS: Your Guide to Choosing the Best Option for Your Ride

When it comes to electric bikes, the choice of sensor can completely change your riding experience. But what exactly are the Torque Sensor and the PAS (Pedal Assist Sensor)? And which one fits your lifestyle best? Let's explore the differences and see how the 50 Rebels R-Series Spring Edition gives you exactly what you need, with the option to choose the sensor that best suits your lifestyle.

Close-up of a cyclist pedaling, showcasing both the Torque Sensor and PAS sensor on the pedal system.

What is a Torque Sensor?

The Torque Sensor measures the force applied to the pedals. The more force you apply, the more assistance the motor provides. This creates a very smooth, natural, and highly responsive ride, perfect for those looking for efficient riding that adapts to different types of terrain. Essentially, it's as if the bike "senses" how much you want to pedal, automatically adjusting the assistance, making it ideal for climbs and rougher terrain.

What is a PAS Sensor?

The PAS (Pedal Assist Sensor), also known as a cadence sensor, detects the rotational movement of the pedals. As soon as you start pedaling, the motor kicks in, providing consistent assistance. This system is perfect for those who prefer a straightforward riding experience without worrying about adjusting physical effort. The feeling is smoother and steadier, making it ideal for urban commutes and lighter rides.

  1. What’s the Main Difference Between Them?
    The key difference lies in how the assistance is activated:

    • Torque Sensor: Assistance is based on the force applied to the pedals. More force = more power.

    • PAS Sensor: Assistance is based on the pedal movement. Simply start pedaling, and the assistance is constant.

Both have their advantages, depending on the type of riding you're after. Let’s help you figure out which one suits you best!

How to Choose the Right Sensor?

  • Torque Sensor: If you’re looking for control, dynamism, and a more natural experience, the Torque Sensor is perfect for climbs, rough terrain, and those who want a “natural” level of effort.
  • PAS Sensor: If comfort and convenience on daily rides are your priority, especially in urban environments or when you want to pedal without thinking too much about effort, the PAS Sensor is the right choice.

Discover the R-Series Spring Edition
The 50 Rebels R-Series Spring Edition offers the best of both worlds: the ability to choose between the Torque Sensor and PAS Sensor when customizing your bike. And the best part is that all 50 Rebels bikes are highly customizable, made to adapt to the needs of those who ride them.

With 5 years of experience, the R-Series Spring Edition offers the freedom to choose the sensor that suits you, combining the best features from previous models.

  • Customization: Tailor your bike with the sensor that meets your needs.
  • Extended Range: Add two batteries for double the range and more adventure.
  • High Performance: Top-quality components for a smooth, safe ride.
  • Agility: Adjustable air suspension that adapts to your riding style, height, weight, and terrain.

If you need help adjusting your suspension, we have a dedicated blog post explaining how to make the perfect adjustment for your style. You can check it out here.

R-Series Spring Edition e-bike featuring dual batteries for extended range and enhanced performance.

Which Sensor Fits Your Lifestyle?


If you're looking for an e-bike for daily commuting or off-road adventures, choosing the right sensor will be key.

The PAS (cadence) sensor is ideal for those who prefer consistent assistance while pedaling without worrying about varying effort. It provides a quick start and is perfect for urban commutes and more relaxed rides. However, if you're cycling in a group or facing situations where stopping is frequent, this sensor may require more attention to maintain distance/safety and control the pace.

On the other hand, the Torque Sensor responds directly to the effort applied to the pedals, offering more dynamic assistance that adjusts to your pace. It's ideal for those who want to control the ride, especially when tackling climbs and quick starts. But if the goal is a light, effortless ride, the torque sensor might be a bit more demanding.

Now that you know the difference between the Torque Sensor and the PAS, the R-Series Spring Edition gives you the flexibility to customize your e-bike to fit your style and needs – ready to ride your way?

 


Find Our E-Bikes

We have 6 different models for you to explore and to customize according to your needs!