Loopwheels are currently available in a 20-inch size for bikes and a larger size for wheelchairs. They are working on 26- and 29-inch wheels for bicycles. They are currently available as a retrofit for Dahon or Tern foldingbikes and have a 100mm front fork for the changeover. The wheels themselves cost $462 US while a Loopwheels folding bike will set you back $1,493.
Basically, the steering system allows the driver to guide the vehicle. The steering wheel is connected, via the steering column and a series of pivoted joints, to the suspension system. This allows the wheels to move up and down as required by the road surface without changing the steering angle. This system also ensures that the wheels turn as required, for example the inner front wheel (which has a tighter curve than the outer one) is more sharply angled when cornering. Like the suspension system, the steering system also requires precise adjustment, as any looseness in the joints can make the steering dangerous.
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on flat ground due to the hub always being nearer the ground than the top of the wheel, all three “loops” have to flex and return for each revolution of the wheel, meaning it would be like going up a gentle hill all the time (work wise)? (unlike conventional suspension that will flex due to riders weight and stop regardless of revolutions.
Loopwheels fit most manual wheelchairs. Choose spoke colour, sticker colour on black wheels, add tyres and pushrim type.
Are there drawbacks? Yes. In the lowest suspension settings, mainly efficiency and dynamic, the ride is bouncy. On a very smooth highway, these lower settings handle very well. However, on more imperfect pavement, you’ll want to move to a higher setting. We find ourselves using comfort the most. To our eye, it’s just below the factory-height dynamic setting, low and sporting but with much less pronounced rebound.
The suspension effect also makes it much easier for a wheelchair user to negotiate steep curbs, both nosing down and backing up, as the suspension effect takes much of the steepness out of the exercise.
'We're at preproduction - we've made wheels, but we're now hoping to get funding for tooling so we can mass product them, and we are planning to spend the next two months getting production ready.'
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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'.
'I've now been working on making it a product for 4 years, and we've made 40 wheels and 200 springs to get it right.
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I spent about 20 minutes out with Sam on the 20″ wheels, coupled up with the Dahon folding bike, and immediately there is something special about them.
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When you provide the correct make, model (and version if applicable), and year information about the vehicle we do verify bolt pattern, TPMS sensors and lug nuts (these items we guarantee fitment).
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Surprised at the baseless negativity this morning. Wait, no, I’m not. Maybe it’s not the simplest suspension solution, but a cool alternative when everything else is homogenizing. bazookasean on May 20th, 2016 - 9:48am