Belt-driven bicycle with a compact design that, like STRiDA, featured a belt drive. Other folding-bike manufacturers that have implemented a belt drive include U.S. company Bike Friday and Netherlands-based Bernds. In 2007, Gates Corporation developed a high-modulus synchronous belt and sprocket system called the Carbon Drive System. The belt’s pitch allowed for lower tension requirements to help prevent skipping. Lightweight, patent-pending sprockets have mud ports, openings under each tooth, which work to slough off debris. In 2009, an increasing number of bicycle companies, including Trek and "f"8 Cycles, offered belt-driven bicycles. While builders initially focused on single-speeds and internal hubs, in early
Schwinn Bicycle Company with Schwinn-designed chrome-molybdenum alloy steel frames. Supplied by manufacturers in Asia, the new arrangement enabled Schwinn to reduce costs and stay competitive with Asian bicycle companies. In Taiwan, Schwinn was able to conclude a new production agreement with Giant Bicycles, transferring Schwinn's frame design and manufacturing expertise to Giant in the process. With this partnership, Schwinn increased their bicycle sales to 500,000 per year by 1985. Schwinn annual sales soon neared the million mark, and the company turned a profit in the late 1980s. However, after unsuccessfully attempting to purchase a minority share in Giant Bicycles, Edward Schwinn Jr. negotiated