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Airless Tyres.

Starter: SydneySinbad Posted: 12 years ago Views: 1.6K
#4764493
Lvl 30


A solid inner hub mounts to the axle. That’s surrounded by polyurethane spokes arrayed in a pattern of wedges. A shear band is stretched across the spokes, forming the outer edge of the tire. The tension of the shear band on the spokes and the strength of the spokes themselves replace the air pressure of a traditional tire. The tread is then attached to the shear band.
When on the road, the spokes absorb road impacts the same way air pressure does in pneumatic tires. The tread and shear bands deform temporarily as the spokes bend, then quickly spring back into shape. They can be made with different spoke tensions, allowing for different handling characteristics.
Michelin reports that “the prototype… is within five percent of the rolling resistance and mass levels of current pneumatic tires. That translates to mean within one percent of the fuel economy” of the tires on your own car. Since it is very early in its development, Michelin could be expected to improve those numbers.
#4764495
These are neat, and are basically the way that current generation runflat tires work, and the reason tires for my car are so damn expensive.

Really, though, this could be revolutionary for military and industrial use. Nice share.
#4764530
Lvl 27
Looks like the tire is on a Hummer, so I would assume they might be a viable alternative for my pickup, and one ton dump. But I would wonder how they would hold up to cold temps, and exposure to weather and the salt they put on the roads here in the winter...
#4764538
Lvl 22
i would think the tensioner system would wear out & fail, whereas air won't.