The Self-Repairing Bicycle Tire Is a Reality
This page is translated from the original post "Le pneu de vélo increvable est une réalité" in French.
- 22/09/2023 16:24
The American startup Smart Tire Company has launched the commercialization of its Metl, the first puncture-proof airless tire.
Since 2020, Smart Tire Company has tirelessly promoted the exceptional qualities of its prototypes. Its patented airless tire concept leverages the unique properties of shape memory alloys. These special metals can expand, contract, bend, or unfold at a very rapid pace (like rubber) and with such force that they can move heavy objects. Even after extreme deformation, the tire recovers 100% of its shape thanks to phase transitions at the molecular level.
Technology validated by NASA
On paper, the promise is appealing, but what guarantees does the company offer? And this is where it gets genuinely interesting, because this tire’s technology was developed by NASA to equip its space rovers! The shape memory alloy (SMA) technology consists solely of interconnected springs. Without air, this tire is completely resistant to punctures.
This unique design also absorbs shocks. SMA is an alloy capable of immediately returning to its original shape. It can deform to adapt to the most extreme conditions while maintaining its shape and structural integrity.
Already the tire of tomorrow
The Metl is available today through a Kickstarter campaign in bike or scooter configurations. The shape memory spring is embedded in a transparent, brightly colored polymer rubber sleeve that houses the tread. The entire assembly has a super futuristic look. The tread has a lifespan of 10,000 km, while the nickel-titanium alloy core is guaranteed for life.
For $150, you’ll get a set of scooter wheels, while $500 is needed to equip your bike. For $1,300, your tires will be mounted on a set of aluminum rims, and for full carbon, it will cost $2,300. That’s a significant budget, but with already $150,000 raised and only $25,000 needed to start mass production, the puncture-proof tire has quickly become a reality in just a few days.
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