Turning a Bike into an E-Bike – What Do I Need?

Turning a Bike into an E-Bike

Did you know that one of the latest mobility trends is turning a regular bike into an e-bike? Betting on electric models is a win-win; however, you can have your own e-bike without the need to invest a lot of money. Keep reading and find out how you can become greener!


What you should know before turning your bike into an e-bike

It’s essential that you plan ahead before starting your bike’s transformation, as you’ll need it to be profitable. In order to prevent any kind of problem, let’s dive into some things you must take into account ahead of starting.


Once you have your e-bike, it’s compulsory to have it certified by an institution coordinated with your country’s government. Thus, it shall be stated that it complies with the UNE-EN 15194:2009 standard, which states, among other things, that the bike must be equipped with an auxiliary electric motor and have a continuous power rating of 0.25 kW.


Electric bikes don’t generally need to be insured. However, if they feature a motor with a power over 250 W, they will be considered motorcycles. Thus, riding one will require a driving license, a plate number and insurance. Thus, be careful when choosing your e-bike, as its power will determine what you will need to do once you have it.

Power consumption

Electric bikes must not only be advantageous pollution-wise, but it mustn’t either become an economic burden. You can find motors with a power output ranging from 250 W up to 1500 W. A higher power logically means a higher power consumption.


As we will later discuss, the basic components to convert your bike are the motor and the battery. Both are heavy, and will influence your riding style (until you get used to it, obviously). Thankfully, most kits are lighter than they used to be and won’t prevent you from riding comfortably.

convert bike to electric

What do you need to turn your bike into an e-bike?

Here we will discuss the different ways of integrating an electric system into your bike.

Electric conversion kit

If you want to convert your standard bike into an electric one, we recommend that you purchase a specific conversion kit. Here you will find a variety of kits for different wheel sizes and battery powers. Includes a water bottle-shaped battery, torque sensor, and a wheel with a motor.
Electric conversion kit


Electric wheel

This is a simple and straightforward way to transform your bike, as you’ll only have to exchange one of the wheels with one that’s equipped with a motor. Then, simply connect your battery to the wheel. You can choose either the front or rear wheel, but please note this will affect your bike’s weight distribution (which may be the only drawback this method has).

Electric wheel



Friction drive motor

Friction drive motors allow you to transform a bike into an e-bike without the need to change any of its wheels. You will only need a motor and a friction belt, which will transmit power continually while rolling. This setup is only valid if installed on the rear wheel, and makes driving slightly more difficult, but can be as efficient as any other method.

Motor + battery under the seat

From an aesthetic point of bien, this method is one of the best. Moreover, it dodges all previous options’ main drawback – weight distribution. As the motor is placed right under the saddle, together with the battery, the bike is more balanced.

Motor + battery under the seat


What other components can you get?

There are components that, even if they’re not essential for turning your standard bike into an e-bike, should not be looked over. We have included them because of how your cycling experience can improve thanks to them. Let’s check them out.

Torque sensor

Also known as movement, cadence or pedaling sensor, it registers pedal movement thanks to a pair of magnets placed under each pedal. It thus detects when you’re starting to pedal, and uses this info to produce an assisting electric pulse.

Sine wave controller

This component is slightly more sophisticated than the rest, but it won’t be hard to find. Its main aim is to stabilise driving, avoiding abrupt speed changes and improving brake sensitivity. It also makes direction changes smoother and thus increases both the cyclist and their environment’s safety.

LCD screen

These kinds of screens are common in many systems and vehicles. Depending on each brand, more or less complete models are available. In order that choosing is easier, here are the features and abilities that, from our point of view, any LCD screen should have if it’s going to be used with an electric bike.

  • Turning electrical systems on/off: When connected to your motor, this one can be turned on thanks to the screen.
  • Turning your lights on/off: Through the same panel, front and rear lights can be turned on or off.
  • Weather prediction: Recommended if you’re a professional cyclist or a sportsperson.
  • Speed sensor: It estimates your speed while on the bike. Ideal for training.
  • Other data: The panel should show additional information, such as reached power or motor temperature.

What about buying an electric bike?

Throughout this post, we have shown you how you can turn your regular bike into an e-bike, and the differences between both of them. As it couldn’t be otherwise, our advice is that you bet on green means of transport. Thus, why not just buying an electric bike?

Spinta Viale 2.0 Electric Bicycle


At Santafixie, you’ll find several models for amateur and professoinal cyclists. One of them is the electric E-Raval Matte Black bike, which has everything necessary to become an ideal partner for you and for the environment.


Manufactured in Barcelona, it features an aluminium frameset for lightness, as well as front and rear brakes. It also includes a highly efficient electrical system and a rechargeable battery. Even if it sounds crazy, its weight is of only 12.5 Kg, much less than other similar bikes.

To sum up, turning a bike into an e-bike is the perfect way to get that boost you need when pedaling. No matter the reason why you want to get one, the most important thing is that you know whether you should adapt your bike or get a new one. On our blog you’ll find interesting posts about cycling. Set off and start pedaling!

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