of mountain bikes with frames made out of modern butted chrome-molybdenum alloy steel. When the sport's original inventors demonstrated their new frame design, Schwinn marketing personnel initially discounted the growing popularity of the mountain bike, concluding that it would become a short-lived fad. The company briefly (1978–1979) produced a bicycle styled after the California mountain bikes, the Klunker 5. Using the standard electro-forged cantilever frame, and fitted with five-speed derailleur gears and knobby tires, the Klunker 5 was never heavily marketed, and was not even listed in the Schwinn product catalog. Unlike its progenitors, the Klunker proved incapable of withstanding hard off-road use, and after an unsuccessful attempt to reintroduce the model as the Spitfire 5, it was dropped from production. The company's next answer to requests for a Schwinn mountain bike was the King Sting and the Sidewinder, inexpensive BMX-derived bicycles fabricated from existing electro-forged frame designs, and using off-the-shelf BMX parts. This proved to be a major miscalculation, as several new United States startup companies began producing high-quality frames designed from the ground up, and sourced from new, modern plants in Japan and Taiwan using new mass-production technologies such as TIG welding. Schwinn fielded a mountain bike racing team in the United States where their team rider Ned Overend won two consecutive NORBA Mountain Biking National Championships for the team in 1986 and 1987. Schwinn's new competitors such as Specialized and Fisher MountainBikes were soon selling hundreds of thousands of mountain bikes at competitive prices to eager customers, setting sales records in a market niche that soon grew to enormous proportions. Factory and retooling issues By this time, Schwinn's bicycle factory was completely outmoded in comparison to modern bicycle manufacturing centers in Japan and Taiwan, who had continually invested in new and up-to-date manufacturing techniques and materials, including new joinery techniques and the latest lightweight chrome-molybdenum alloy steel, and later, aluminum. The company considered relocating to a single facility in Tulsa, Oklahoma, but financing the project would have required outside investors, perhaps even foreign ones. Schwinn's board of directors rejected the new plant in 1978. Labor troubles, bankruptcy and demise In October 1979, Edward R. Schwinn, Jr. took over the presidency of Schwinn from his uncle Frank, ensuring continuity of Schwinn family in the operations of the company. However, worker dissatisfaction, seldom a problem in the early years, grew with steep increases in inflation. In late 1980, the