World's first 3D-printed titanium bike is super strong and incredibly light

Empire Cycles' MX-6 prototype is a third lighter than normal metal bike frames, and four times stronger than the most stringent tests demand – this is the future of pedal power

3D printing isn't just for churning out plastic doodads, oh no.

You just need to think bigger. Like Bolton-based Empire Cycles, who've teamed up with 3D printing wizards Renishaw to create the world's first 3D-printed titanium alloy bicycle frame.

The MX-6 bicycle isn't the first 3D-printed bike – there have been some rather chunky plastic efforts, and Australian-based Flying Machine has created a bike using off-the-shelf tubes with 3D-printed lugs. But Empire Cycles has taken things a step further and printed the entire frame – in several sections – using laser sintering.

Going organic

World's first 3D-printed titanium bike is super strong and incredibly light  - Going organic 2World's first 3D-printed titanium bike is super strong and incredibly light  - Going organic 3

Using a process called topological optimisation, the CAD models of the bike were refined to remove unnecessary weight, while still retaining structural strength. The result is a series of lattice-like joints with almost organic forms – and a bike frame that's a third lighter than a conventionally-manufactured metal frame.

It's a technique that aircraft manufacturers are experimenting with to create strong, light airframes – indeed, much of Renishaw's work has been with the aviation industry.

READ MORE: 12 surprising reasons you need a 3D printer

"Because it's essentially grown, you can create shapes and forms that you can't create using any other manufacturing method," explains Chris Williams, MD of Empire Cycles. "So you can do lots of of undercuts and intricate shapes that would be impossible with solid machining or casting." That also means it's more efficient; rather than carving into a solid piece of metal, you use only as much material as you need.

But does 3D-printed metal hold up to conventionally-cast components? The bike's been strength tested, and the results are startling. "We've tested the seat tower in a test lab, and it's extremely strong," says Williams. "It quadrupled the European standard requirement for the component."

More after the break...

This isn't even my final form

Because 3D printing means you can quickly tweak and produce a design, it's still being revised. "We're currently growing a new one, because we've made some changes," says Williams. "It's on the machine now, being built."

The latest version of the MX-6 will be on display at the London Bike Show, before a three-day stint on display at the Science Museum. What are you waiting for? On yer bike.

READ MORE: The Mark One is the world's first 3D printer that can make objects out of carbon fibre

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