
Electric bikes are becoming increasingly popular, and many people are looking to convert their standard folding bicycles into e-bikes. There are several reasons why someone might want to make this conversion. For example, they might want to reduce their carbon footprint, improve their fitness, or simply enjoy the experience of riding an e-bike. However, it's important to consider the compromises that come with folding e-bikes, as they tend to be heavier and more expensive than their non-electric counterparts. Additionally, the process of converting a folding bike to electric can be complex and may require purchasing additional parts and seeking professional assistance. Nevertheless, with the right tools, knowledge, and motivation, it is possible to join the e-mobility revolution and experience the benefits of riding an e-bike.
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What You'll Learn

Front-wheel conversion kits
If you're looking to convert your folding bike to electric, one option is to use a front-wheel conversion kit. This involves replacing your front wheel with an electric motor wheel, which will provide power to your bike while you pedal.
There are several companies that offer front-wheel conversion kits, such as Swytchbike, Ebikeling, and E-BikeKit. These kits typically come with everything you need to convert your bike, including a battery, charger, pedal sensor, and motor wheel. The installation process is usually straightforward and can be done in a few hours or less, depending on your technical expertise and the specific kit you choose.
One advantage of front-wheel conversion kits is that they are generally easier to install than rear or central motor alternatives. This is because there are no gears or drivetrain components to work around. The only parts that may need adjustment are the brakes. Additionally, front-wheel drive can help prevent flat tires on the back wheel, as it is not burdened with extra weight.
When choosing a front-wheel conversion kit, it's important to consider the compatibility with your bike. Most front-wheel kits are designed for standard 100mm front fork spacing, which is the standard for most bikes. However, it's always a good idea to double-check the compatibility of your specific bike model with the kit you're interested in.
Overall, a front-wheel conversion kit can be a great option for those looking to convert their folding bike to electric, offering a relatively simple and cost-effective solution.
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Central hub kits
There are several options for converting a folding bike to electric using a central hub kit. The first option is the Swytch Kit, which is a universal electric bike conversion kit that uses a motor at the front hub. The kit includes a battery, charger, pedal sensor, motor wheel, and more. The battery can be easily disconnected and stored, and the Swytch Kit is compatible with cable brakes, hydraulic brakes, and disc brakes. The second option is the Bafang mid-drive conversion kit, which can be purchased on Amazon and is easy to install with a few tools. The third option is the TongSheng mid-motor system, also available on Amazon, which claims to fit 95% of standard bike frames and is 30% lighter than the Bafang unit. The fourth option is the Cytronex electric bike conversion kit, which can be used with a Brompton folding bike. This kit is well-engineered and can be installed with Allen keys, but the purchasing process can be complicated. The fifth option is the Magic Pie direct-drive hub motor, which is powerful and can be purchased with a range of voltages and battery packs. The sixth option is the Pendix mid-drive system, which can be fitted to folding bikes and has a range of 28km.
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Rear hub kits
Rear hub motors are generally more powerful than front-wheel alternatives. The motor sits on top of the rear tyre and a roller pushes it around from above. There is also a wireless cadence sensor, as this is a cadence-based system that adjusts based on pedalling cadence, rather than torque.
One of the most popular rear hub kits is the Leaf 20-inch electric hub motor bike conversion kit. This kit converts your 20-inch original bike to an e-bike with a 60V 2000W rear hub motor. The Leaf kit also comes in a 36V 750W version.
Another popular option is the Swytch Kit, which includes everything you need to convert your bike to electric, including a wheel, power pack, pedal sensor, charger, and all necessary cables. The power pack can be strapped anywhere on your frame and plugged in with a single cable.
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$369.99

DIY conversion kits
Electric bike conversion kits are a great way to give your old bike a boost and introduce you to a new world of electrically-assisted fun. They are also a cheaper and greener form of transport.
There are three main types of e-bike conversion kits, from least to most complex in terms of installation: Front hub, rear hub, and mid-drive. The front hub process involves swapping in a new front wheel with a motor at its centre. The rear hub process is similar, but for your rear wheel. The mid-drive system involves replacing your crank and chainring with the one provided in the kit. You will also need a battery hooked up to the motor and an LCD display for your handlebars.
When choosing a kit, it is important to consider the various motor and battery options available. Reputable battery makers and e-bike kit sellers use the best-quality cells from brand names like LG, Panasonic, and Samsung. It is also important to consider the range you want to get out of your battery. As a rule of thumb, around 10Ah will give a range of 29km/18 miles, whereas 18Ah will give around 53km/33 miles.
There are a variety of DIY electric bike conversion kits available on the market. The Swytch eBike Conversion Kit is highly rated and recognized in 2023 by Red Dot as 'an environmentally friendly, easy-to-install solution.' The kit includes everything you need to convert your bike, including a battery, charger, pedal sensor, and motor wheel. The Cytronex e-bike conversion kit is another well-thought-out kit with great specs and top-notch engineering. The Voilamart kit is also an option, which comes with six main parts: the replacement rear wheel, replacement brake levers, control screen, pedal sensor, throttle, and control box. However, it does not come with a battery.
If you are looking for a cheaper option, you can find generic e-bike conversion kits on sites like Amazon. One reviewer on Electrek performed an e-bike conversion on a simple mountain bike using a $469 Amazon e-bike kit that came with the motor, controller, battery, accessories, and a bag to hide away the wiring.
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Buying a pre-converted electric folding bike
If you are considering buying a pre-converted electric folding bike, there are a few things to keep in mind. Firstly, electric folding bikes are becoming increasingly popular, and for good reason. They offer a convenient and eco-friendly way to get around, especially if you need to cover longer distances or tackle hills.
However, it is important to consider the trade-offs between a folding bike and an electric bike. Folding bikes are most practical when they are very light and easy to carry. Once you add the weight of a motor and battery, you could be looking at a 40-lb bike, which may become cumbersome to carry, especially up and down stairs.
If you decide that the benefits of an electric folding bike outweigh the potential drawbacks, there are a few options available to you. You could consider the electric Brompton, which is a well-known folding electric bike option. However, it may not be the most budget-friendly choice. Another option is to convert a full-sized or mini-velo bike using a conversion kit, which can save you money.
There are several electric bike conversion kits on the market that can help you transform your folding bike into an electric one. These kits typically include a battery, charger, pedal sensor, motor wheel, and other necessary components. Some popular options include the Swytch Kit, which is known for its lightweight and easy installation, and the Brompton Foldable Bicycle Conversion Kit, which offers adjustable power and speed settings.
When choosing a conversion kit, it is important to consider factors such as ease of installation, range, power, and cost. It may be helpful to read reviews and watch installation videos online to get a sense of the process and whether it is something you feel comfortable doing yourself. Additionally, consider the state of your current bike and whether it is in reasonable repair to make the conversion worth your while.
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Frequently asked questions
Electric bikes can be motivating and enjoyable. They can be especially useful for medium-distance travel, helping you to arrive at your destination without getting sweaty. They can also be useful for longer journeys, making the climbs and headwind more tolerable.
Folding bikes are designed to be light and practical. Once you add motors and batteries, the bike becomes heavier and more awkward to carry.
There are several electric bike conversion kits available on the market, including the Swytch Kit, the Cytronex kit, the Rubbee X, and the Grin kit.
It is important to assess the state of your current bike. If your bike is in reasonable repair, then the value for money and effort will be greater. You should also consider the ease of installation, as some kits are more complicated to install than others.
Electric bike conversion kits typically include a motor, battery, controller, and display. The motor power can range from 350W to 500W, and the battery can provide a max speed of 25-32 km/h and a range of up to 40 km. The display may show information such as charge level, speed, distance, and temperature.










































