How to Build a 3 Wheel Electric Bike?

Charles Miller
Charles Miller
Founder at - FlybyWheel

Charles Miller is a veteran bike enthusiast with over 12 years of experience dealing with bikes as a mechanic. Despite immense love and expertise for...

Did you know that over 200 million electric bikes are used daily worldwide? We're seeing a growing trend towards more sustainable and efficient modes of transportation, and building a 3 wheel electric bike is one way to contribute to this movement.

It's a project that combines the technology of electric propulsion with the stability and comfort of a tricycle. We're going to walk you through this process, discussing the necessary parts, the assembly, and the installation of the electric system.

And while it might sound complex, don't worry, we'll break it down into manageable steps. But before we start, why should you consider building your own 3 wheel electric bike instead of buying one? Well, let's just say, there's a satisfying thrill in riding something you've built with your own hands.

Key Takeaways

  • Gathering necessary components, such as a motor and drive set, rear axle, motor mount, and electronics, is the first step in building a 3 wheel electric bike.
  • Assembling the trike structure involves removing and modifying the rear axle, fitting a modified drive cog, and attaching the motor mount.
  • Installing the electric system requires removing the rear axle, mounting the motor onto the trike, and connecting the electronics to the battery.
  • The final assembly and testing phase involves gathering all necessary components, finding suitable locations for them, assembling the trike, and checking the electric system's functionality.

Gathering Necessary Components

Before we dive into the process of building our 3 wheel electric bike, let's outline the essential components we'll need to gather, starting with the motor and drive set which can be purchased for around 41 pounds 60 from various sources. This is the heart of our electric bicycle, providing the power assist we need to conquer any terrain.

Next, we'll need to access, remove, and modify the rear axle. This involves removing the subframe and tapping the axle with a rubber mallet. It's a bit technical, but we've done this before, so we know what we're doing.

We'll then mount the motor. We'll create a motor mount using a 1mm steel plate. This bit can be tricky, but with some careful adjustments using the slots in the plate, we'll get the motor in just the right position.

Finally, we'll need to gather the necessary components for final assembly and testing. This includes connecting the electronics to the battery and finding a suitable location for these components. This is where we bring our electric trike to life.

We're all in this together, so let's get started on our journey to build a 3 wheel electric bike.

Assembling the Trike Structure

Having gathered all the necessary components and prepared the motor mount, we're now ready to tackle the assembly of the trike structure.

First, let's get down to removing and modifying the rear axle. We'll need to take off the subframe, basket, mud guards, and wheels to access it. Here's a tip: loosen the brake and derailleur set cables before tapping the rear axle with a rubber mallet. That's how it actually works, guys.

Remember to keep track of the axle components' positioning as we're going to fit the modified drive cog between the gear and brake. Once that's done, we can reattach the axle with the new drive cog. It's all about precision here.

Next, we'll mount the motor. I've got a 1mm steel plate we can use to create a motor mount with slots for motor adjustment. We can either weld or bolt the motor mount onto the trike, ensuring easy motor installation and adjustment.

Installing Electric System

electrifying the building s infrastructure

Now, with the trike structure ready, let's dive into the nitty-gritty of installing the electric system – a 500-watt motor and drive set that's surprisingly affordable at just 41 pounds 60. It's time to pay a little bit of attention to the details.

Here's how to build a 3 wheel electric bike and install the electric system in just a few steps:

  1. Preparation
  • Remove the rear axle to access the drive cog and brake disc. This involves taking off the subframe, basket, mud guards, and wheels, and loosening the brake and derailleur set cables.
  1. Mount the Motor
  • Create a motor mount using a 1mm steel plate. Cut the slots for motor adjustment, and then weld or bolt it onto the trike.
  1. Reassemble and Connect
  • Once the motor is mounted, put everything back together. Connect the electronics to the battery. Find a suitable location for the electronics for road legal use in the UK.

Frequently Asked Questions

Is It Cheaper to Build or Buy an Ebike?

We've found through cost comparisons that building an e-bike can be cheaper, but it's not without DIY challenges. It requires building expertise, while purchasing offers convenience. It's a trade-off between cost and ease.

Can You Make a Tricycle Electric?

Yes, we can convert tricycles into electric with pedal assist options. We'll handle the battery placement for optimal trike stability. Our tricycle conversions are innovative, detailed, giving you a sense of belonging in our community.

How Much Does It Cost to Build an Ebike From Scratch?

We've found that DIY ebike building, while presenting challenges, offers customization benefits. Budgeting considerations and material sourcing are key. For under 300 pounds, you can create your own unique ebike from scratch.

How Fast Does a 3000w Electric Bike Go?

We've found that a 3000w electric bike can reach up to 45-50 mph. Speed regulation, battery efficiency, motor durability, and safety measures all factor into this. However, we'd advise caution due to potential safety risks.


We've done it! We've forged an extraordinary, innovative 3-wheel electric bike from scratch.

This isn't just any bike, but a cutting-edge, eco-friendly beast that roars in silence. It's truly astounding what a mere 283 pounds can transform into.

Every wire connected, every bolt tightened, it's a testament to our tenacity and technical prowess. Our hands built this marvel, and now, we ride into a cleaner, greener future.

Let's rev up, folks, the open road awaits!

Charles Miller is a veteran bike enthusiast with over 12 years of experience dealing with bikes as a mechanic. Despite immense love and expertise for his Tacoma, he rides his Trek Ebike more. Anytime you meet him, you’ll either hear him talking about Bikes, or writing about all things bikes and cars on this blog. 

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