He dubbed it the RW750 (RW standing for Road Warrior). During testing at Talladega, AL, the RW750 was clocked at a top speed of . He raced in the 500 cc-dominated Formula One class (the Barton engine was designed prior to 1978 and was grandfathered into this class by AMA rules). He found some success at the local club levels despite the grossly overpowered, unrefined engine. In 1982, Barton closed, and Buell was given the option to purchase the entire stock of spare engines and parts, drawings, and the rights to produce and sell the engine. Buell did so, but the shipment was delayed, and he missed the opportunity to make use of this new equipment and knowledge for the 1983 racing season. This delayed the development of the engine. Leaving Harley-Davidson With the stunted development, Buell's inquiry with his employer to gain engineering and financial support was declined due to reliability problems with the Barton engine. Buell then quit his job at Harley-Davidson to devote more time to his racing effort. The Buell Motor Company By late 1984, Yamaha TZs were scarce (Yamaha had ceased production of the TZ series) and the competing Hondas were selling for around $30,000. Buell offered his RW750s under the 'Buell Motor Company' marque for $15,900 to press accolades. The American Machinist's Union Racing Team bought, tested and raced the first publicly sold RW750 (commonly known as 'RW750 number 2'), and gave it glowing marks. In the Spring of 1985 the AMA announced that the Superbike class would supplant Formula One as the premier road racing class for the 1986 racing season, and the Formula One class would be discontinued, leaving Buell with no market for his creation. Innovation Despite this setback, Buell forged ahead and designed his first entry into the sportbike market, the RR1000. Using his connections at Harley-Davidson, he acquired a sizeable cache of unused XR1000 racing engines, the powerplant of a model he had ridden to a podium finish at the 1983 Road America Battle of the Twins National, so he had confidence in this engine's potential in the sport market. Around this powerhouse, he designed a stiff, extremely light chassis that incorporated the unconventional rubber-mounting system known as "the Uniplanar" that became a patented engineering trademark of Buell sport bikes. The wrap-around fairing design had lower aerodynamic drag than a few 21st century sportbikes. Buell's design incorporated the engine