Khamis, Ogos 26, 2010

Radical new tyre ; the Tweel

Subject: Radical new tyre design by Michelin

Made in South Carolina, USA 

"SEE THROUGH" TYRES !

Radical new tyre design by Michelin.
The next generation of tyres. 
Recently released at the Philadelphia car show.

Michelin Tweel 1

Those are spokeslike connections to the inner part of the tyre from the outside tread 'wrap'! Next picture shows what they look like in motion...

Michelin Tweel 2

Michelin Tweel 3

Michelin Tweel 4

These tyres are airless. They are scheduled to be on the market soon. Bad news for law enforcement as spike strips will not work on these. 

Think of the impact on existing technology: 
A. No more air valves
B. No more air compressors
C. No more flat tyres
D. No more puncture repairs
E. No more jacks or spares required. 

These are actual pictures taken in the South Carolina plant of Michelin. 


(Source : http://www.hoax-slayer.com/see-through-tyres.shtml)


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Historically Significant
"Major revolutions in mobility may come along only once in a hundred years," said Terry Gettys, president of Michelin Americas Research and Development Center in Greenville, S.C. "But a new century has dawned and Tweel has proven its potential to transform mobility. Tweel enables us to reach levels of performance that quite simply aren't possible with today's conventional pneumatic technology."
The most intriguing application may be Michelin's early prototype Tweel fitment for passenger cars. The mobility company released video of promising Tweel performance on an Audi A4.
"The Tweel automotive application, as demonstrated on the Audi, is definitely a concept, a stretch application with strong future potential," said Gettys.
"Our concentration is to enter the market with lower-speed, lower-weight Tweel applications. What we learn from our early successes will be applied to Tweel fitments for passenger cars and beyond."
Benefits of the Tweel
The heart of Tweel innovation is its deceptively simple looking hub and spoke design that replaces the need for air pressure while delivering performance previously only available from pneumatic tires.
The flexible spokes are fused with a flexible wheel that deforms to absorb shock and rebound with ease. Without the air needed by conventional tires, Tweel still delivers pneumatic-like performance in weight-carrying capacity, ride comfort, and the ability to "envelope" road hazards.
Michelin has also found that it can tune Tweel performances independently of each other, which is a significant change from conventional tires. This means that vertical stiffness (which primarily affects ride comfort) and lateral stiffness (which affects handling and cornering) can both be optimised, pushing the performance envelope in these applications and enabling new performances not possible for current inflated tires.
The Tweel prototype, demonstrated on the Audi A4, is within five percent of the rolling resistance and mass levels of current pneumatic tires. That translates to within one percent of the fuel economy of the OE fitment.
Additionally, Michelin has increased the lateral stiffness by a factor of five, making the prototype unusually responsive in its handling.
Future of Tweel Technology
For Michelin, Tweel is a long-term vision that represents the next step in a long path of industry-changing innovations. Fifty years ago, Michelin invented the radial tyre and there is no question that radial tyre technology will continue as the standard for a long time to come. Michelin continues to advance the performance of the radial tyre in areas such as rolling resistance, wear life and grip.
In the short-term, the lessons learned from Tweel research are being applied to improve those conventional tyre performances. In the future, Tweel may reinvent the way that vehicles move. Checking tyre pressure, fixing flats, highway blow-outs and balancing between traction and comfort could all fade into memory.



Brief Analysis
Such tyres do exist and have been dubbed "tweels". However, they are not new and Michelin has no immediate plans to release the tyres to consumers for use on normal vehicles. Development of the tyres over the last few years has focused on their suitability for use on low speed applications such as construction vehicles. Certainly, tyres based on the tweel concept may one day replace conventional tyres, but any such change is likely to be some years away

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