How to make an electric bike with a starter motor?


A mechanized bike with an incorporated electric motor for movement is known as an electric bike. There are several different types of electric bikes marketed across the community. Still, they typically fall into two subgroups: those that help the rider’s pedaling power and those with a controller and moped-style capabilities.

A classic bicycle is a complicated feat of technology with or without an engine or batteries. Bicycles aren’t cheap every day, but the price may skyrocket when you add an engine and a power supply.

Homemade electric bike

With the most excellent e-bikes ranging between $1,400 and $3,000, constructing your e-bike might be more reasonable than purchasing one. Fortunately, those of you who are handy with the tool can combine the strengths of premium bicycles with luxury electric bike supplies to create your own high-quality, budget-friendly electric bike.

It’s essentially a passion for so many DIY e-bike aficionados. But there’s also an unspoken agreement that if they do a fantastic job and strike that transition, they’ll gain some popularity and possibly start receiving bookings from other individuals. We’ll walk you through the entire process of building an electric bike with a starting motor in this tutorial.

DIY Electric bike Making process

Parts Required for the Process

Before we begin making an electric bike with a starter motor, let’s get to know what items we will need to begin with. You can quickly get these items at a local hardware store.

  • One self-starter motor
  • Gear 11t
  • Two iron plates [(L=23 cm, B=6cm),(L=12cm, B=2cm)]
  • Bicycle Chain
  • Nut Bolt 4pc (2.5 inches each)
  • Wire and Switch
  • Compressor

Now that we know all the parts let us start with making this fantastic e-bike equipped with a starter motor. Stated further is a step-by-step process to ease this whole DIY project for you.

Step #1: Pick a Bicycle

To create an electric bike, you’ll need a regular bicycle first. There is no requirement for a particular bicycle, and even a mountain bike will suffice. However, because it must carry some weight and speed, it is preferable to buy a bicycle with a robust frame. As a result, choosing a bicycle that can handle some extra weight is preferable.

Also, check if the chassis of the bicycle that will be changed seems to have sufficient room for the engine and batteries to be attached. For the engine, use the vacant area in the center of the framework between the driver’s leg, and for the batteries, use the back area with a handlebar mount or carriage.

Step #2: Connecting the batteries

The second step in creating your electric bicycle is to connect the batteries. A sequence of batteries can be linked. The positive (+) terminals of one battery must be linked to the other’s negative terminal (-) connectors. You may also interconnect the batteries in a parallel configuration. It’s finished once you’ve connected all of the positive and negative ports in distinct manners.

Your electric bike’s source of power will be batteries. Before actually purchasing batteries, you need to determine the necessary strength for the motor and other components of your bicycle. Electric bikes typically use a voltage range of 24 to 36 volts. It is essential to employ numerous batteries rather than one to provide the appropriate voltage, even if it occupies quite a bit more room.

Step #3: Attaching the Bicycle Body to the Starter Motor

The engine must now be attached to the frame. The frame’s triangular space is ideal for setting up everything, especially the engine. Make some holes with a drill to install the motor where it won’t contact your body to ensure a hassle-free e-bike ride.

Step #4: Ensure that the starter motor is adequately attached

By stretching the engine independently with the chain across the crankshaft wheel, you may evaluate it. In most cases, the primary link is employed to interconnect the two endpoints of a bike chain. As a result, make sure the motor is positioned correctly. It should not be modified, but it should be dependable. If it remains unsecured or unstable, it might fall at any point while riding.

You may use an indicator to indicate the spot on your bicycle where you desire the motor and generator to go. To retain the engine secure, screw it to the bracket connected to the bike frame’s tubes a minimum of four times. Place an additional plate on top of the motor to keep it in place.

Step #5: Putting the Accelerator in Place

An accelerator is simple to install. Choose a thin and rigid section around the grip and handlebar subsequently stream a water solution with dishwashing detergent via the coat rack. The fluid will be drawn downwards into the handlebar.

Step #6: The Compressor being pushed to the handlebar

The instructions for pushing and attaching the compressor may be found in the handbook that came with it.

Step #7: The Throttle Cable, as well as the Cable Motor Get, Connected

Flipping the bicycle upside down and starting the motor to test if it works is the initial step to conduct after establishing the connection. Then establish a link between the generator and the battery. If you have difficulty with chain synchronization, you can always use washers.

Why Use Starter motors in an e-bike?

Starters protect DC motors from damages induced by powerful current and torque upon startup. They achieve this by connecting outside opposition to the motor’s armature winding in parallel, limiting the current to a safe amount.

In other words, because there is no back emf when starting a DC motor, a large quantity of current may be delivered to the windings. The current may increase 4-6 magnitudes more extraordinary than the winding wire’s specified load current. As a result, it may cause harm to the motor’s winding at the initial start. In DC motors, starters are employed to avoid such a massive current surge. A starter is made up of a changeable series resistance provided to the motor’s armature. Its purpose is to lower the beginning power throughout the winding. The starting resistance steadily decreases as the motor powers up.

Is It Worth It Building an e bike at Home?

Transforming your bicycle into an e-bike has several benefits over purchasing an e-bike at a store. When you opt to modify your regular bicycle into an electric bike, you eliminate all of the increased expenses. You only pay for the bike components, saving a lot of money. You have complete influence over the functionality of your e-bike when you pick your preferred parts. Another fantastic incentive to convert your electric bicycle is that you may start with a considerably higher-quality bicycle than you would with an average retail e-bike. Finally, and most importantly, changing your existing bicycle to electric propulsion will give you a sense of achievement.

You are aware of your situation. You begin with a bicycle. You finish with the identical bike but with extra parts, either those you install or those you repair, such as the bottom bracket. It’s self-evident what’s what. When the motor is in the center or the bottom bracket, the power transfer from the batteries to the motor is clear. Cabling for brake controls, clutch, or monitors is present. You can’t put a bike properly without understanding how it operates.

Can Hybrid e-bike be Made at Home?

Nothing can be made at home these days, especially when you have tons of resources on Google and Youtube videos. Such e-bikes can be made at home; however, it might require a little more parts, investment, and a whole lot of effort to be put in. So, if you’re ready for that kind of commitment, you can start working on your hybrid e-bike.

Hybrid bicycles combine the best features of road bikes, traveling bikes, and mountain bicycles. The resultant “hybrid” is a versatile bike that can handle various riding situations and purposes.

Does A Bike Conversion Kit Make The Process Easier?

An electric bike conversion kit is usually a good investment. Kits are less expensive than purchasing a new e-bike. This allows you to spend more cash on a higher-powered, higher-quality conversion kit. Generally, new e-bikes require some setup. Conversion kits are often simple to assemble with only a few tools. This is often the simplest and most smooth method of conversion. In the end, while a conversion kit can help you modify your bike quickly and easily, many riders have discovered that nothing compares to the exceptional degree of performance afforded by a whole electric bike.

Frequently Asked Questions

What type of motors is ideal for a homemade e-bike?

Despite having the same fundamental technology, the motors used on today’s e-bikes are divided into three categories. Mid-drive motors are located in the central part of the bike’s frame, where the bottom bracket would ordinarily be. Hub motors are found in the front or rear hubs of e-bikes, and there are two kinds of hub motors. Mid-drive motors are more lightweight than hub motors, making climbing slopes more straightforward and starting from a stop. They also make changing your tires a lot easier. On the other hand, Hub motors are far less costly, more durable, and gentler on your chains. It is entirely dependent on your requirements and preferences.

Which battery arrangement, series or parallel, is preferable for excellent backup?

Parallel. If you connect them in a series motor, it will all die when one of them dies. In addition, the voltage in parallel will be the same, unlike the series motor.

Do I need a license to make or ride an e-bike?

Typically you do not require a license to convert your standard bike into an electric one. You don’t even need a license to ride one in most states. However, it is always advised to check with the rules and regulations of your area to be double sure and avoid breaking any laws.

What motor size is suggested for an electric bike?

Any motor with a power rating of 250W or above will suffice for an electric bike. However, if you intend to use it while riding up hills or if you are heavier, you may require a larger-sized motor.

What can I do to make my e-bike gain more speed?

If your regulator can take it, you can raise the volts of the batteries. It will boost your bike’s acceleration and top speed. However, if you boost the voltage over the specified level, the speed may become uncontrollable, and riding it may become dangerous.

Benefits of Riding electric bike

Cycling an e-bike is similar to riding a traditional bike but with the extra benefit of power. Additionally, having a motor with pedaling help has several benefits. Also, with pedal aid, cyclists must nonetheless pedal, resulting in calorie loss. It’s a beautiful cardiovascular workout that may help you gain muscle and stamina.

Pedal assistance provides a lift to cyclists. It assists with slopes, steep hills, and rocky terrain by making the ride easier and lowering joint tension. In addition, you may ride with more speed and accuracy than on a standard bike. It also encourages those to ride bikes who might otherwise be unable to do so due to physical limitations. You can also bike for extended periods without becoming physically exhausted.

E-bikes make riding more approachable, and individuals are more inclined to implement them since they are simpler to operate and provide a similar workout with less exertion. Cycling an e-bike gets people moving and out in nature, even if otherwise inactive. This movement, change of environment, and fresh air can help you enhance your attitude, reduce stress, have a better night’s sleep, and be more productive.

E-bikes are ideal for doing chores and traveling to the workplace a few kilometers away. Since it’s designated as a bicycle, you may ride it on pavements, bike lanes, and parks in many municipalities. Your journey might be quicker than a car trapped in a jam if you use alternate modes of transportation to get to your destination. People who ride an e-bike rather than driving save money and benefit the environment by reducing gas use and pollution.

The typical speed of most riders is 10 to 12 mph, while an e-bike can reach 20 mph. You can arrive more quickly at your desired location on an e-bike than on a traditional bike. E-bikes aren’t any riskier than ordinary bicycles. They pose different dangers. Since you can sprint to move out of the path quicker and go at different velocities while keeping up with traffic, e-bikes are generally safer than traditional bikes.


That’s all there is to know about building an electric bike with a starting motor. We hope it proves to be a valuable resource for you while working on your electric bike. However, it is suggested that you seek professional assistance because the construction process needs a great deal of experience and knowledge, but doing it on your own is not impossible—best of luck with your e-bike construction and riding.

Recent Posts