By David Smith 
  Updated:October 9, 2023

Are you an electric bike enthusiast looking to customize your riding experience? Electric bikes equipped with pedal assist systems (PAS) offer a convenient way to boost your pedaling power. However, there may come a time when you want to take control and bypass the PAS.

In this article, we’ll explore the reasons behind bypassing pedal assist, the methods to do so, and the crucial safety measures to keep in mind. Whether you’re troubleshooting issues or seeking a tailored riding experience, understanding how to bypass pedal assist safely is key. Let’s dive into this electrifying journey of customization and control.

Understanding Pedal Assist System

Pedal Assist System

Pedal assist is a popular feature in electric bikes (e-bikes) that provides assistance to the rider’s pedaling effort. It is also known as PAS (Pedal Assist System). The pedal assist system works by measuring the rider’s pedaling speed and force and providing a corresponding amount of power to the electric motor. This allows the rider to go further and faster with less effort.

There are different types of sensors used in pedal assist systems. The most common ones are cadence sensors and torque sensors. Cadence sensors measure the speed at which the rider is pedaling, while torque sensors measure the force applied to the pedals. Some e-bikes use a combination of both sensors to provide a more accurate and responsive pedal assist system.

The pedal assist system works by measuring the rider’s pedaling speed and force and providing a corresponding amount of power to the electric motor.

The power provided by the motor varies depending on the assist level selected by the rider. Most e-bikes offer several levels of assistance, ranging from low to high. The higher the assist level, the more power is provided by the motor, and the easier it is to pedal.

The PAS level can be adjusted using the bike’s display or control panel. Some e-bikes also allow the rider to customize the assist levels to their preference. This can be useful for riders who want more control over the amount of assistance provided by the motor.

It is important to note that pedal assist systems are designed to provide assistance to the rider’s pedaling effort, not replace it entirely. The rider still needs to pedal to make the bike move. Additionally, some e-bikes have a maximum speed limit that is determined by the motor’s power output and the local regulations. It is important to follow these regulations to ensure safe and legal use of the e-bike.

In summary, the pedal assist system is a useful feature in e-bikes that provides assistance to the rider’s pedaling effort. It works by measuring the rider’s pedaling speed and force and providing a corresponding amount of power to the electric motor.

The power provided by the motor varies depending on the assist level selected by the rider. It is important to follow local regulations and use the pedal assist system responsibly.

Components of Pedal Assist System

Components of Pedal Assist System

The Pedal Assist System (PAS) is a crucial component of an electric bike that provides power assistance to the rider while pedaling. It consists of several parts that work together to provide a smooth and efficient riding experience. Here are the main components of the PAS:

Sensor

The PAS sensor is the component that detects the pedaling motion of the rider. It is usually located near the bottom bracket or on the chainstay of the bike. There are different types of sensors, including cadence sensors, which detect the speed of pedaling, and torque sensors, which measure the force applied to the pedals. The sensor sends signals to the controller, which then adjusts the power output of the motor.

Controller

The controller is the brain of the PAS system. It receives signals from the sensor and adjusts the power output of the motor accordingly. It also monitors the battery voltage, current, and temperature to ensure safe and efficient operation. The controller is usually located near the battery and is connected to the motor, sensor, and display.

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Motor

The motor is the component that provides power assistance to the rider. It is usually located in the hub of the front or rear wheel or in the bottom bracket of the bike. The motor receives power from the battery and converts it into mechanical power to assist the rider’s pedaling. The power output of the motor is controlled by the controller, which adjusts it based on the signals from the sensor.

Battery

The battery is the component that provides power to the motor and controller. It is usually located on the frame of the bike and can be removable or integrated. The battery capacity and voltage determine the range and power output of the electric bike. The battery is connected to the controller via wires or connectors.

Display

The display is the component that shows the rider the status of the PAS system, including the power level, speed, distance, and battery level. It is usually located on the handlebar of the bike and can be a simple LED display or a more advanced LCD display with multiple functions.

Throttle

The throttle is the component that allows the rider to control the power output of the motor without pedaling. It is usually located on the handlebar of the bike and can be a thumb throttle or a grip throttle. The throttle is connected to the controller via wires or connectors.

Brake Sensor

The brake sensor is the component that detects when the rider applies the brakes. It is usually located near the brake lever of the bike and sends signals to the controller to cut off the power output of the motor. This ensures safe and reliable operation of the electric bike.

In summary, the PAS system is a complex system that consists of several components that work together to provide power assistance to the rider while pedaling. Understanding the different parts of the PAS system can help you diagnose and fix any issues that may arise.

How Pedal Assist Works

How Pedal Assist Works

Pedal assist, also known as PAS (Pedal Assist System), is a feature found in many electric bikes (ebikes) that helps you to pedal with less effort. The system uses a sensor to detect the movement of your pedals and then activates the motor to provide additional power.

As you pedal, the PAS system continuously monitors your speed and adjusts the power assist accordingly.

When you start pedaling, the PAS sensor sends a signal to the motor, which then kicks in to provide extra assistance. The amount of power provided depends on the PAS level you have selected. Most ebikes have several PAS levels, which allow you to adjust the level of assistance to suit your needs.

As you pedal, the PAS system continuously monitors your speed and adjusts the power assist accordingly. This means that if you start pedaling faster, the system will provide more assistance, and if you slow down, it will provide less assistance.

It’s worth noting that the PAS system only provides assistance when you are pedaling. If you stop pedaling, the motor will stop providing power. This is an important safety feature that helps to prevent accidents and ensures that you remain in control of the bike at all times.

In summary, the PAS system is a great feature that makes cycling easier and more enjoyable. It provides additional power when you need it most and helps to reduce the effort required to pedal. With multiple modes and assist levels, you can customize the PAS level to suit your needs and preferences.

Why Bypass Pedal Assist

Pedal assist is a great feature that can help you ride your electric bike with ease. It provides assistance to your pedaling, making it easier for you to climb hills and ride longer distances. However, there may be times when you want to bypass pedal assist. In this section, we will discuss why you might want to do so.

Damage or Malfunction

One reason you might want to bypass pedal assist is if the system is damaged or malfunctioning. If the pedal assist system is not working properly, it can cause a lot of problems. For example, it might not provide enough assistance, or it might provide too much assistance, which can be dangerous. In some cases, the pedal assist system might even stop working altogether. If you suspect that your pedal assist system is damaged or malfunctioning, it’s best to bypass it until you can get it fixed.

Whether you’re dealing with a damaged or malfunctioning system, want to control the level of assistance you receive, or need to tweak your speed limit, bypassing pedal assist can be a useful tool.

Assistance Level

Another reason you might want to bypass pedal assist is if you want to control the level of assistance you receive. With pedal assist, the level of assistance is determined by the speed at which you pedal (in most cases). If you want more assistance, you need to pedal faster. If you want less assistance, you need to pedal slower.

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However, this can be inconvenient if you want to maintain a certain speed or if you want to conserve your energy. By bypassing pedal assist, you can control the level of assistance you receive using a throttle or other mechanism.

Speed Limit

Pedal assist systems are often designed to limit the speed of the bike. This is to ensure that the bike is safe and easy to ride. However, if you want to ride faster than the speed limit, you might want to bypass pedal assist. By doing so, you can ride as fast as you want without any restrictions.

In conclusion, there are many reasons why you might want to bypass pedal assist. Whether you’re dealing with a damaged or malfunctioning system, want to control the level of assistance you receive, or need to tweak your speed limit, bypassing pedal assist can be a useful tool.

However, it’s important to use caution when doing so and to ensure that you’re not causing any damage to your bike or putting yourself in danger.

How to Bypass Pedal Assist

If you have an electric bike with a pedal assist system (PAS) and you want to bypass it, there are a few ways to do so. Here are three methods that you can try:

Method 1: Disconnect the PAS sensor wire

The PAS sensor is the part of the bike that detects when you are pedaling and sends a signal to the motor to provide power. To bypass the PAS, you can disconnect the wire that connects the sensor to the motor. This will allow you to use the throttle to control the power output instead of relying on pedaling.

To do this, you will need to locate the PAS sensor wire. This wire is usually located near the bottom bracket of the bike. Once you have found the wire, you can disconnect it from the motor. This will effectively disable the PAS system, allowing you to use the throttle to control the power output.

Method 2: Change the location of the PAS sensor

Another way to bypass the PAS system is to change the location of the sensor. By moving the sensor to the wheel that does not have the motor, you can effectively disable the PAS system and use the throttle to control the power output.

To do this, you will need to disconnect the sensor wire from the motor and connect it to the wheel that does not have the motor. You will also need to adjust the settings on the controller to ensure that the motor is still able to provide power.

Method 3: Cut the PAS wires connected to the controller

If you want to completely remove the PAS system from your bike, you can cut the wires that are connected to the controller. This will effectively disable the PAS system and allow you to use the throttle to control the power output.

Before you do this, however, it is important to understand that cutting the wires may also affect other parts of the bike, such as the display and the throttle. You will need to make sure that you are comfortable with the potential consequences before you proceed.

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In conclusion, bypassing the pedal assist system on your electric bike can be done in a few different ways. Whether you choose to disconnect the PAS sensor wire, change the location of the sensor, or cut the PAS wires connected to the controller, it is important to make sure that you understand the potential consequences of your actions before you proceed.

Safety Measures While Bypassing Pedal Assist

Safety Measures Bypassing Pedal Assist

Bypassing the Pedal Assist System (PAS) on your electric bicycle can be a risky endeavor. It is important to follow safety measures to avoid damage to your bike and ensure your safety. In this section, we will discuss some safety measures that you should consider while bypassing the PAS.

Braking and Stopping

It is important to remember that bypassing the PAS will affect your bike’s braking and stopping abilities. Without the PAS, your bike will not automatically slow down when you stop pedaling. Therefore, you should be cautious and use your brakes to slow down and stop your bike.

Thumb Throttle and Twist Throttle

When bypassing the PAS, you can use a thumb throttle or twist throttle to control your bike’s speed. It is important to familiarize yourself with the throttle mode and practice using it before going on a ride. You should also ensure that the throttle is functioning properly before riding.

Speedometer

Without the PAS, your bike’s speedometer may not function properly. You should be aware of your speed and adjust your riding accordingly. It is also a good idea to use a GPS device or smartphone app to track your speed.

Damage

Bypassing the PAS may cause damage to your bike’s motor or controller. To avoid damage, you should ensure that the bypass method you choose is appropriate for your bike’s make and model. You should also follow the manufacturer’s instructions carefully.

In conclusion, bypassing the PAS on your electric bicycle can be a useful modification. However, it is important to take safety measures to avoid damage to your bike and ensure your safety. By following the tips outlined in this section, you can bypass the PAS safely and enjoy your ride.

Electric Assist System Classification

Class of E-bike

Electric assist systems are classified into three categories: Class 1, Class 2, and Class 3. Each class has different speed and power limits, and it is important to understand the classification of your electric assist system to ensure compliance with local laws and regulations.

Class 1

Class 1 electric assist systems provide assistance only when the rider is pedaling and stop assisting when the bike reaches 20 mph. These systems are allowed on bike paths, streets, and other public places.

Class 2

Class 2 electric assist systems have a throttle that can be used to activate the motor without pedaling. The motor stops assisting when the bike reaches 20 mph. These systems are also allowed on bike paths, streets, and other public places.

Class 3

Class 3 electric assist systems are similar to Class 1 systems, but they provide assistance up to 28 mph. These systems are not allowed on bike paths and are only allowed on streets and other public places.

It is important to note that the classification of your electric assist system may vary depending on your location. Always check local laws and regulations before using your electric bike.

Many manufacturers produce electric assist systems for electric bikes, and it is important to choose a system that meets your needs and complies with local laws. When choosing a electric assist system, consider factors such as speed, power, and range.

Overall, understanding the classification of your electric assist system is crucial for safe and legal use of your electric bike.

Conclusion

In conclusion, there are various ways to bypass pedal assist on your electric bicycle. The most common methods include disconnecting the PAS wire, moving the PAS to the front or rear wheels, or removing the PAS wires from the controller.

It’s important to note that bypassing pedal assist can have negative consequences, such as reducing the range of your battery, decreasing the lifespan of your motor, and potentially voiding your warranty.

However, it’s important to note that bypassing pedal assist can have negative consequences, such as reducing the range of your battery, decreasing the lifespan of your motor, and potentially voiding your warranty. Therefore, it’s recommended to only bypass pedal assist if you have a specific reason to do so, such as addressing sensor-related issues or customizing power delivery.

If you’re unsure about how to bypass pedal assist on your specific electric bicycle, it’s always best to consult with a professional or refer to the manufacturer’s instructions. Additionally, it’s important to prioritize safety while riding your electric bicycle, regardless of whether you choose to bypass pedal assist or not.

Experienced industry enthusiast with a keen interest in technology, renewable energy, micro-mobility, and electric cars. Noticed in some cool publications and tech magazines along the way.

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