How To Make An Electric Bike Go Faster?

Electric bikes have revolutionized the world of cycling. They offer an environmentally friendly, efficient, and enjoyable mode of transportation.

If you’re using an e-bike for commuting, leisurely rides, or fitness, there’s one common desire among riders: how to make their electric bike go faster.

In this comprehensive guide, we will explore various methods to unlock the full-speed potential of your e-bike. From simple adjustments to more advanced modifications, we’ll cover it all.

Understanding the need for speed

Before delving into ways to make your electric bike faster, it’s essential to understand the factors that influence an e-bike’s speed.

The speed of an electric bike primarily depends on the power and efficiency of its motor, the capacity and voltage of its battery, and the bike’s overall design.

Additionally, speed limits on e-bikes are often set to ensure rider safety and regulatory compliance. These speed limits can vary by region and e-bike class, so it’s crucial to be aware of local laws and regulations.

Classifying E-bikes

E-bikes are typically classified into different categories, each with its own set of regulations. These classifications help determine where and how e-bikes can be used. The three main e-bike classes are:

Class 1 E-bike

These e-bikes provide pedal assistance without a throttle and have a top-powered speed limit of 20 mph (32 km/h).

Class 2 E-bike

Class 2 e-bikes can be powered solely by the motor, with a maximum powered speed of 20 mph (32 km/h). They also do not feature a throttle.

Class 3 E-bike

Similar to Class 1 e-bikes, Class 3 e-bikes provide pedal assist only, but with a higher top-powered speed limit of 28 mph (45 km/h) and no throttle.

It’s essential to know the classification of your e-bike, as it directly impacts its speed capabilities and where you can legally ride it. Modifying your e-bike to exceed its class-specific speed limits may require additional licensing, registration, and insurance.

Simple Ways to Electric Bike Go Faster

1. Battery Maintenance

Ensuring your e-bike’s battery is always fully charged is the simplest way to enhance speed. A fully charged battery provides the highest voltage output, resulting in increased speed.

As the battery discharges during a ride, its voltage drops, reducing speed. Top off your battery before each ride to maximize speed.

2. Tire Choice

The type of tire on your e-bike plays a significant role in speed. If your e-bike is equipped with off-road or mountain bike tires, swapping them for road tires with lower rolling resistance can boost speed. Slick tires with a smoother tread pattern reduce resistance and increase your e-bike’s speed.

3. Tire Pressure

Increasing the air pressure in your e-bike’s tires can reduce rolling resistance and enhance speed. Higher tire pressure also increases the wheel’s diameter, allowing your e-bike to cover more ground with each rotation. However, be cautious not to overinflate your tires, as it can result in a rougher ride and decreased traction.

4. Disable Speed Limiter

Some e-bikes come with built-in speed limiters, which can be turned off or adjusted. By disabling the speed limiter, you can unlock your e-bike’s full-speed potential.

The process of disabling the speed limiter can vary by e-bike model, so consult your user manual or seek professional assistance.

5. Trick the Speed Sensor

E-bikes with mid-drive motors often use a wheel speed sensor located on the rear wheel. You can trick the sensor into reading at a slower speed by moving it to the crank, which typically rotates at a slower pace. This modification can eliminate the speed limiter, although it may affect your speedometer’s accuracy.

6. Software Settings and Firmware Updates

Some e-bikes have speed limiters programmed into their software or settings. You can increase your e-bike’s speed by adjusting these settings or uploading different firmware. The process can vary based on your e-bike’s make and model.

Advanced Hacks for Electric Bikes Go Faster

If you’re looking to push your e-bike’s speed even further, there are advanced methods to consider.

7. Increase the motor K-value.

To achieve higher speed with the same battery voltage, you need a motor with a higher Kv (velocity constant) value. Kv is measured in RPM per volt, and a higher Kv motor will spin faster with the same voltage. There are two ways to accomplish this:

Replace the Motor: Some e-bikes allow motor replacement, but this can be complex and may require purchasing a new motor and making significant modifications.

Rewind the Motor: Alternatively, you can rewind the existing motor, reducing the number of windings to increase the Kv value. This modification will result in higher speed but also lead to increased current consumption, heat generation, and a reduced range.

8. Increase Voltage: Upgrade the Battery

Another way to boost speed is by increasing the battery voltage. You can achieve this in two ways:

Replace the Battery: Swapping your existing battery with one of higher voltage can increase your e-bike’s speed. Ensure that the new battery is compatible with your e-bike’s electrical system.

Modify the Battery: If your e-bike has space inside the battery housing, you can add more cells to increase voltage. However, this is a complex task that may affect charging compatibility and the motor controller.

9. Adjust Bike Gearing (Mid-Drive Motors)

If your e-bike features a mid-drive motor, adjusting the gearing can enhance speed. Changing to a larger chainring will increase your e-bike’s top speed while sacrificing some low-end torque. This modification is ideal for flat terrain.

Understanding Electric Motor Basics

Electric motors play a pivotal role in determining an e-bike’s speed. To comprehend how to make your e-bike faster, it’s essential to grasp some fundamental electric motor concepts:

1. Motor KV Value

The Kv value, expressed in RPM per volt, dictates a motor’s rotational speed for a given voltage. A motor with a higher Kv value spins faster for the same voltage.

2. Motor Controllers

Motor controllers act as on/off switches, controlling the motor’s speed by rapidly turning it on and off. Speed is adjusted by altering the ratio of on-time to off-time. However, a motor controller cannot make a motor spin faster than its Kv value allows.

Safety and legal considerations

While increasing your e-bike’s speed can be exhilarating, it’s crucial to prioritize safety and legality. Here are some key considerations:

• Modifying your e-bike may void its warranty and affect its legal classification.
• Exceeding local speed limits for e-bikes may require additional licenses, registration, and insurance.
• Ensure your modifications align with local regulations and safety guidelines.

Final Words

Making your electric bike go faster is an achievable goal, but it requires careful consideration and, in some cases, technical expertise. Whether you opt for simple adjustments or more advanced modifications, the thrill of cruising at higher speeds on your e-bike is sure to add an extra layer of excitement to your journeys.