Build Your Own Electric Motorcycle: A Comprehensive Guide

how to build an electric motorcycle book

Build Your Own Electric Motorcycle by Carl Vogel is a comprehensive guide to constructing an electric motorcycle from scratch. The book provides detailed technical information, covering various aspects such as aerodynamics, motor, batteries, frame, and safety. It also includes visuals like pictures, diagrams, charts, and graphs to illustrate each step of the building process. The author, an alternative fuel expert, offers insights into the latest trends and speculations in the electric vehicle field. The book is ideal for those interested in building their own electric motorcycle or gaining a deeper understanding of the technology behind electric vehicles.

Characteristics Values
Author Carl Vogel
Author's Credentials President of Vogelbuilt Corporation, a research, engineering, and development company for alternative fuels and alternative-fueled vehicles; President of the Long Island Chapter of the Electrical Automotive Association; former employee at Festo Corporation and Curtis Instruments
Format Paperback, eBook
Content Step-by-step guide to building an electric motorcycle from the ground up; technical information and easy-to-follow instructions for building a two-wheeled electric vehicle, from a streamlined scooter to a full-sized motorcycle; details on every component, including motor, batteries, and frame; pictures, diagrams, charts, and graphs to illustrate each step
Additional Information Covers electric motorcycles currently on the market and explains how to convert an existing vehicle; provides an overview of electric motorcycles, technical information, trends in the electric vehicle field, and speculation on the evolution of technology; includes information on aerodynamics and its relevance to motorcyclists

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Choosing a donor bike

The first step to building an electric motorcycle is choosing a donor bike. A donor bike is an existing cycle that you will convert into an electric motorcycle. This is usually done for legal, insurance, and registration reasons. By converting a donor bike, you can avoid the hassle of registering a new vehicle and dealing with the associated paperwork.

When choosing a donor bike, it is important to consider the overall condition of the bike. Ideally, you should choose a bike that is in fairly good condition, with functioning turn signals, headlights, and horns. Avoid bikes that are rusted or in poor shape, as they will require more time and work to fix.

Another important factor to consider is the drivetrain of the donor bike. The electric motor will dramatically increase the torque, so it is crucial to ensure that the drivetrain is in good condition to handle the additional power. Using a low-quality or worn drivetrain can result in poor performance, affected shifting, or even a broken chain.

The brakes of the donor bike are also a critical consideration. The added weight and increased potential speeds of an electric motorcycle will put more stress on the brakes. It is recommended to choose a donor bike with disc brakes, as they will provide better braking performance and be more effective in curtailing momentum.

Additionally, you should consider the type of drive system the donor bike uses. Most motorcycles use a chain drive, which offers flexibility, efficiency, and ease of gear ratio changes. Electric motorcycles can also be built with a belt or driveshaft drive, but these may require more advanced projects and considerations.

Finally, ensure that the donor bike has sufficient space in its frame to accommodate the motor and batteries. You will need to make sure that the motor and batteries can fit comfortably within the bike's structure without compromising its integrity or functionality.

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Removing the ICE

Removing the internal combustion engine (ICE) from a motorcycle is a complex process that requires mechanical knowledge and expertise. While the specific steps may vary depending on the motorcycle model and type, here is a general overview of the process:

Before beginning the removal process, it is crucial to have a clear understanding of the motorcycle's components and their functions. Study the motorcycle's manual and relevant literature to gain a comprehensive knowledge of the engine and its associated systems. This step is essential for a successful ICE removal and the subsequent electric conversion.

The first step in removing the ICE is to disconnect the fuel system, which includes the fuel tank, fuel lines, and associated components. Drain the fuel tank and carefully detach the fuel lines, ensuring that you properly seal or cap them to prevent any leakage. Next, remove the exhaust system, which typically involves detaching the exhaust pipes, muffler, and any other exhaust components. This process may vary depending on the motorcycle's exhaust setup.

With the fuel and exhaust systems removed, you can now access and remove the ICE itself. This step requires extreme care and attention to detail. Start by disconnecting the engine from the transmission and drivetrain. Carefully detach all associated wiring harnesses, sensors, and components connected to the engine. It is important to label or mark these connections to facilitate proper reassembly during the electric conversion process. Once the engine is disconnected, physically remove it from the motorcycle frame, taking note of any mounting points or brackets that need to be modified or adjusted for the electric motor installation.

After removing the ICE, ensure that you properly dispose of it or recycle its components responsibly. Some parts may be reusable or refurbished for other purposes, so consider consulting with specialists in engine recycling or repurposing.

At this stage, with the ICE successfully removed, you can now prepare the motorcycle for the installation of the electric motor and associated components. This may involve modifying the frame, fabricating new mounting points, and making any necessary adjustments to accommodate the electric powertrain. Remember to refer to the literature and resources specific to the electric conversion kit or components you plan to use.

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Sourcing parts

When it comes to sourcing parts for your electric motorcycle, you have a few options. You can either buy off-the-shelf parts or source them from a junked vehicle.

If you're looking for a more affordable option, you can consider using parts from a junked electric forklift or another vehicle. For example, you could use a series-wound drive motor from a junked electric forklift. Just make sure that the motor has a male driveshaft, as some pump motors and electric golf cart motors do not.

Another option is to buy off-the-shelf parts. You can find these parts online or at your local hardware store. This option may be more convenient, but it will likely be more expensive.

When sourcing parts, it's important to consider the legal requirements for riding an electric motorcycle in your area. Make sure to register your cycle and comply with any other rules and regulations, such as insurance and licensing requirements.

Additionally, pay attention to the weight and placement of the parts. The batteries, for example, are the heaviest part of the motorcycle and should be placed as close to the center and as low as possible for optimal balance and center of gravity.

Finally, don't forget to measure the dimensions of the parts you need, especially if you're converting a traditional motorcycle to an electric one. This will ensure that your electric motor output shaft is in the correct position, avoiding potential issues with your drive chain.

For more detailed information on sourcing parts and building your own electric motorcycle, consider purchasing a guide book, such as "Build Your Own Electric Motorcycle" by Carl Vogel. This book provides step-by-step instructions, technical details, and illustrations to guide you through the process.

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Electric motor types

Electric motors are one of the most important components of an electric motorcycle. They convert electrical energy from the battery into mechanical energy, causing the wheels to rotate and propel the bike forward. The type and placement of the motor significantly impact performance, influencing power output, handling characteristics, and overall efficiency.

There are two main types of electric motors for motorcycles: hub motors and mid-drive motors. Hub motors are situated within the hub of either the front or rear wheel. They are simpler, more affordable, and require minimal maintenance, making them ideal for casual riders on flat terrain. However, they may be less powerful than mid-drive motors due to weight distribution and reduced traction on the front wheel.

Mid-drive motors, on the other hand, offer a more natural riding feel, excellent climbing ability, and a wider range of assistance levels. They are placed in the centre of the bike, providing a more balanced weight distribution. Mid-drive motors are generally more expensive and complex than hub motors, but their performance advantages make them a popular choice for riders seeking a more dynamic riding experience.

When choosing an electric motor for your motorcycle, it is important to consider your typical riding conditions. If you plan to ride on flat paths and commute in the city, a hub motor might be sufficient. However, if you intend to take on off-road adventures or climb hills, a mid-drive motor's superior torque and assistance levels might be more suitable.

In addition to the type of motor, other considerations include the motor's voltage, torque, RPM, and physical dimensions. Higher voltage will spin the motor faster, and different gearing will alter the top speed. Ensure that you select a motor that fits the available space on your motorcycle and matches your desired performance characteristics.

For those interested in building their own electric motorcycle, books like "Build Your Own Electric Motorcycle" by Carl Vogel offer a wealth of information. Vogel provides technical insights, conversion instructions, and details on various components, including motors, batteries, and frames. With diagrams, charts, and practical advice, Vogel's book can guide you through the process of creating your own electric motorcycle.

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Converting to AC/DC

AC and DC systems are both integral parts of a motorcycle's electrical system. The engine produces electricity through the rotation of the crankshaft, which powers the electricity generator. This electricity is then delivered to the ignition system, either directly or through the battery. This process is known as rectification.

In an AC system, the AC electricity generated by the power generator is delivered to the ignition system, charging the battery and powering the headlamp and tail lamp. The headlamp is a core component of the AC system, as it is connected directly to the generator, bypassing the battery. This means the battery carries a minimal load and can be lighter and cheaper. However, the low-capacity battery has limited charging capabilities, which can cause issues when converting to a DC system.

In a DC system, the engine generator produces AC power, which is then converted to DC and delivered directly to the battery. All hubs and electric equipment are then connected to the battery, providing a constant and stable electricity flow. This stable flow allows for the use of electric devices, such as the headlamp, even when the engine is not running.

Converting from an AC to a DC system is possible and relatively straightforward, requiring only a rearrangement of the motorcycle's wiring. However, it is important to consider the limitations of the low-capacity battery in the AC system. When converting the headlamp circuit to DC, the battery and bulb may need to be replaced, and the charging circuit updated, to avoid issues with the motorcycle's electrical system.

For more information on converting an existing motorcycle to electric, you may want to refer to Carl Vogel's book, "Build Your Own Electric Motorcycle". This book provides a detailed, step-by-step guide to building an electric motorcycle, with pictures, diagrams, and charts to illustrate each step. Vogel, an alternative fuel expert, covers the latest technical information, component parts and their functions, and electric motorcycles currently on the market.

Frequently asked questions

The book is a step-by-step guide to building an electric motorcycle from the ground up. It covers everything from choosing the right components to assembling them, with detailed instructions and illustrations.

The book is written by alternative fuel expert Carl Vogel, who is the president of Vogelbuilt Corporation, a research, engineering, and development company for alternative fuels and alternative-fueled vehicles.

In addition to learning how to build an electric motorcycle, readers will gain valuable insights into the fundamentals of aerodynamics and its importance in motorcycling. The book also covers electric motorcycles currently on the market and explains how to convert an existing vehicle.

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