A bicycle without wheels might sound like a strange concept—but it’s now a real, working prototype.

A bicycle without wheels might sound like a strange concept—but it’s now a real, working prototype.

Instead of traditional round wheels, this unusual bike moves using a continuous track system, similar to what you’d find on a tank. It can still roll forward, but steering is noticeably more difficult, especially on uneven or rough surfaces.

The idea comes from Sergii Gordieiev, the Ukrainian engineer behind the YouTube channel The Q. He’s known for building unconventional bicycle designs that challenge how we think about everyday objects. His creativity and hands-on skills show that even the simplest things can be reimagined in surprising ways.

The bike’s propulsion system is quite unique. Instead of a standard wheel-and-chain setup, it uses a track driven by a chain positioned at an unusual angle relative to the frame. When the rider pedals, the chain moves and pushes the track forward, allowing the bike to travel much like a conventional bicycle.

To build it, Gordieiev started with a standard bike frame—minus the wheels. In place of circular wheels, he installed long metal axles fitted with gears and a looping track, then added a tire-like outer layer to mimic a tank tread. To connect the pedals to this system, he added a secondary chain that links the pedals to the upper section of the rear axle. Both the front and rear assemblies are fixed at specific points to maintain their angled position while riding.

Once completed, he took the bike out for a test ride. While it moves forward fairly smoothly, several design limitations quickly became clear. Steering is challenging, and the bike struggles on rough terrain or when encountering everyday obstacles like potholes or road grooves.

Even so, Gordieiev emphasizes that this wheel-less bike is purely an experimental and fun project—more about exploring bold ideas than creating something practical for everyday use.