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I got this from another board..... A Great Big Thanks to COB From the ATVQuadSquad for this Most Excellent Find Thought this was a interesting article. Honda ATV History 101 The 1960s: Prototyping the ATC If necessity was the mother of the first ATV, Honda engineer Osamu Takeuchi was its father. In 1967, American Honda asked Honda R&D Ltd. for a new product dealers could sell when motorcycle sales cooled off in the winter. Mr. Takeuchi was assigned to lead the project, along with a small group of Honda engineers. This was clearly the group for the job, since Takeuchi and company had been working to develop other new recreational vehicles that never saw production. These projects gave Takeuchi the tools to develop Honda's first ATV, the US90. Forget the proverbial blank sheet of paper. Takeuchi started in the shop with a head full of ideas and an eclectic assortment of components. Two-, three-, four-, five- and even six-wheeled configurations were examined, but the three-wheel concept delivered the best combination for the machine's intended mission. It dealt with snow, mud and assorted slippery conditions a two-wheeler couldn't, while providing more maneuverability than other configurations. In the early stages, a Honda ST™70 motorcycle gave up its 70cc four-stroke single-cylinder engine for the cause, along with assorted chassis parts. An extended rear axle carried cultivator wheels designed to handle rough terrain. Two driving wheels in the rear worked well. Cultivator tires didn't. The biggest challenge would be finding a tire capable of getting a grip on soft, changeable terrain such as snow, sand and mud. Two wheels, three wheels, four wheels or more? Motorcycle tires weren't an option. The design process quickened when American Honda sent Takeuchi an American invention called the Amphi-Cat& that rolled on six 20-inch low-pressure, high-flotation balloon tires. The light bulb went on. Revamping his ST70-based prototype to accept the new low-pressure rolling stock, he went to work on his own tire design, ending up with a 22-inch tire inflated to 2.2 psi. With the tire dilemma solved, the 70cc engine lacked the muscle necessary to push a full-sized rider through snow or mud. A 90cc engine running through a special dual-range four-speed gearbox added the requisite flexibility over varied terrain. continued...
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JOHNSON VALLEY, CA, OCTOBER 10, 2009: The Pit Bull Tires UTV King of the Hammers race will be held on Thursday February 11th, 2009 as part of the week long Hammerking Productions event in Johnson Valley, CA. The first place purse for this stand alone race will be $5,000. There will also be multiple contingency opportunities. Pit Bull Tires has stepped up to the challenge and is proud to be More...