Each wheel incorporates a regular hub, with a hub brake and hub gearing. Instead of spokes, however, three looped carbon composite springs run from the hub to the rim. Whenever the wheel hits a bump in the road, the energy is absorbed by those springs.
The spring system between the hub and the rim of the wheel cushions the user from bumps and potholes in the road. The springs absorb road noise, reducing vibration through the frame and into the rider’s arms and body. High-pressure or puncture-resistant tyres can be used.
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They won a £24,000 Innovate UK grant in 2013 that helped them to develop the loopwheel for wheelchairs. A further £240,000 grant in 2017 allowed them to work with 2 companies, Strategic Simulation and Analysis (SSA) and Composite Braiding, to further develop the loopwheel to go faster and for use off road and on rough terrain.
Stand back. A performance-tuned dual exhaust system uses two resonance-free pipes to emit an enthralling growl from the massive 5-inch matte-black exhaust tips.
Measure your peak horsepower, torque and boost pressure on any run with an integrated dynamometer. Then compare it to previous records.
Rear Loopwheels are about twice as stiff as front installations, and wheels can be used both separately with a spoked wheel, or as a set, plus as the lone form of bike suspension, or in addition to suspension forks. At only around 0.7 pounds heavier than spoked equivalents, Loopwheels make for particularly appealing add-ons to folding bikes, most of which don't bother with suspension systems due to the weight and bulk they pile on.
In fact, this varied terrain is one of the factors contributing to wheelchair discomfort and inefficiency. A wheel designed for the smooth floor inside a house or a public building is completely inappropriate for traveling on a rocky field or bumpy road.
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In 2013 we raised funding to get loopwheels into production by running a Kickstarter campaign. 178 lovely people pledged their support; some are listed here.
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Also, that the e-tron runs at its lowest from the factory while in efficiency mode means there are likely efficiency gains going on.
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'Then I had a spare afternoon and remembered the idea, so decided to make a model with springs made from plastic guttering I bought from B&Q and a pencil as a hub - and it worked perfectly'.
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Full-suspension mountain bikes just don’t cut it for designer Hojun Lee. So he created a solution within the wheels. In place of standard spokes are three sets of shock absorbing coils in his concept renderings.