Let’s dive in.

When it comes to long-range electric bikes and high-speed models, using traditional bicycle frames has always been a challenge. It's like trying to fit a gasoline engine into a horse-drawn cart. While Carl Benz managed to do it successfully, the design wasn't exactly built for durability—just look at Bertha Benz’s famous trip with her kids. In the photo, you can see what that original model looked like.

Courtesy of Mercedes Benz

It doesn’t really resemble a modern vehicle, does it? That’s because early inventors used what was available. Benz used a cart, and today’s engineers use standard bike frames. But as time went on, it became clear that adapting these frames for e-bikes often led to failure—just like those old horse carriages couldn’t handle the power of gasoline engines.

The problem lies in the distribution of mechanical stress. E-bikes require large batteries and powerful motors, which create much more strain than regular bikes. Unlike traditional bikes, where the force comes from human muscles, e-bikes rely on electric torque that can be significantly stronger. This puts extra pressure on wheels, rims, and spokes, especially when using aluminum frames or forks. Even with improvements, many frames still break down over time—similar to how bolts and welds can fail under constant stress.

That’s why we developed our own unique frame design, one that's specifically built for e-bikes. But let’s talk about the battery for a moment.

A high-capacity battery pack isn’t just a single unit—it's made up of multiple cells connected together, forming a heavy and bulky structure. Here’s what it looks like:

Size directly affects capacity, so making the battery smaller means less range. And for an e-bike, range is everything. Who wants a bike that only goes 20 km? The image above shows the actual battery we use in our e-bikes. But there’s another important factor: lithium-ion batteries are highly flammable, and safety is crucial. Traditional bike frames aren’t designed to protect such a large and heavy component, which makes them unsuitable for high-capacity systems.

For urban riders, small batteries placed in the water bottle area might work. But for serious long-range e-bikes, that’s not enough. As you can see in the photo below, this setup is very limited in both space and protection:

This looks a bit like the first cars—small, basic, and not built for real performance. For larger, more powerful batteries, we needed something different. The reasons were simple:

• Traditional frames don’t have enough space for a large battery.
• Smaller batteries mean shorter range, which defeats the purpose of an e-bike.

So, we designed a special frame that acts as a protective housing for the battery and control electronics. It’s similar to a computer’s system unit, offering both protection and stability. Here’s how it looks:

This frame not only protects the battery but also lowers the center of gravity, making the bike more stable and easier to handle. The size of the frame depends on the battery and motor specs, but its shape remains consistent—like a motorcycle frame built around the power source, rather than a traditional bike.

Now, how do you choose the right size? It’s actually quite simple. By adjusting the wheel size or saddle height, the frame can be adapted to suit cyclists between 166 cm and 180 cm or taller. Just consult your sales manager when purchasing your e-bike, and they’ll help you find the perfect fit.