Boulder City, Nevada - Desert Research Technology Inc. (DRT) is to make paddle-type sand tyres using polyurethane elastomer chemicals and technology from Amerityre Corp. Tempe, Arizona-based maker of sand tyres DRT will intially use the technology to make polyurethane treads/paddles on conventional rubber tyre casings, said a 14 Sept announcement from Amerityre. The company's eventual goal is to manufacture the complete tyre from polyurethane materials, the statement added. "Using high horsepower vehicles in a harsh desert environment is the perfect proving ground for our polyurethane materials and processes," explained Gary Benninger, Amerityre's president & ceo, in the company announcement. According to PU elastomer tyre developer Amerityre, DRT is developing these tyres for sand cars, which are race vehicles adapted for use on sand dunes, deserts or beaches. Traditionally, sand tyres are made using rubber compounds, and have large "paddles" to help raise traction. Amerityre said "DRT's engineers believe that new materials and paddle designs are critical to improving tyre performance and durability." The two companies have been involved in a joint development programme: "Our collaboration with Amerityre allowed us to achieve all of our goals. These included developing processes for rapid prototyping, improving tyre performance, and lengthening the life of a tyre. From our vantage point, this project has been an important success for DRT," said Bill Oliver, DRT's president, in the statement from Amerityre. "Our successful testing of these sand tyres opens up a wide range of potential applications in prospectively extreme conditions, from recreational to industrial, and to even military uses," added Benninger. DRT's PU sand tyres will be on show at the Sand Sport Super Show, 14 - 16 Sept, at the Orange County Fair Grounds in Costa Mesa, California. DRT aims to partner with a major sand car manufacturer to bring this technology to market, including the first coloured sand tyre, made possible by the collaboration with Amerityre. "