W. Schwinn, grandson Frank Valentine Schwinn took over management of the company. Schwinn was soon sponsoring a bicycle racing team headed by Emil Wastyn, who designed the team bikes, and the company competed in six-day racing across the United States with riders such as Jerry Rodman and Russell Allen. Developed from experiences gained in racing, Schwinn established Paramount as their answer to high-end, professional competition bicycles. The Paramount used high-strength chrome-molybdenum steel alloy tubing and expensive brass lug-brazed construction. During the next twenty years, most of the Paramount bikes would be built in limited numbers at a small frame shop headed by Wastyn, in spite of Schwinn’s continued efforts to bring all frame production into the factory. At the close of the 1920s, the stock market crash decimated the American motorcycle industry, taking Excelsior-Henderson with it.
While the Paramount still sold in limited numbers to this market, the model’s customer base began to age, changing from primarily bike racers to older, wealthier riders looking for the ultimate bicycle. Schwinn sold an impressive 1.5 million bicycles in 1974, but would pay the price for failing to keep up with new developments in bicycle technology and buying trends. While every large bicycle manufacturer sponsored or participated in bicycle racing competition of some sort to keep up with the newest trends in technology, Schwinn had restricted its racing activities to events inside the United States, where Schwinn bicycles predominated. As a result, Schwinns became increasingly dated in both styling and technology. By 1957, the Paramount series, once a premier racing bicycle, had atrophied from a lack of attention and modernization. Aside from some new frame lug designs, the designs, methods and tooling were the same as had been used in the 1930s.
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. Another problem was Schwinn’s failure to design and market its bicycles to specific, identifiable buyers, especially the growing number of cyclists interested in road racing or touring. Instead, most Schwinn derailleur bikes were marketed to the general leisure market, equipped with heavy “old timer” accessories such as kickstands that cycling aficionados had long since abandoned. More and more cyclists, especially younger buyers, began to insist on stronger steel alloys (which allowed for lighter frames), responsive frame geometry, aluminum components, advanced derailleur shifting, and multiple gears.[8][30] When they failed to find what they wanted at Schwinn, they went elsewhere.
During this period, bicycle sales enjoyed relatively slow growth, with the bulk of sales going to youth models. In 1900, during the height of the first bicycle boom, annual United States sales by all bicycle manufacturers had briefly topped one million. By 1960, annual sales had reached just 4.4 million.[10] Nevertheless, Schwinn’s share of the market was increasing, and would reach in excess of 1 million bicycles per year by the end of the decade. In late 1997, Questor Partners Fund, led by Jay Alix and Dan Lufkin, purchased schwinn bicycles. Questor/Schwinn later purchased GT Bicycles in 1998 for $8 a share in cash, roughly $80 million.
Starting in 1960, for the rest of the market, Schwinn offered the Schwinn Varsity, Continental, and LeTour — now equipped as multi-geared sport bikes (10-speeds), and designed to imitate the style of the new narrow-tired ‘racing’ and sport bikes from Europe, though not their performance.[27] The 1960 Varsity was introduced as an 8-speed bike, but in mid-1961 was upgraded to 10 speeds. Other road bikes were introduced by Schwinn in the early and mid 1960s, such as the Superior, Sierra, and Super Continental, but these were only produced for a few years. The Varsity and Continental sold in large numbers through the 1960s and early 1970s, becoming Scwhinn’s leading models. The major difference between the two models was the use of a tubular front fork on the Continental — both bikes used the same frame design, a lugless, steel unit, using Schwinn’s standard Ashtabula cranksets and welded in such a way that the joints were smoothly filled (similar to the joints in 21st-century composite frames). The wheel rims were likewise robust, chromed, stamped steel with a unique profile designed to hold the tire bead securely, even if pressure were low or lost. By 1975, bicycle customers interested in medium-priced road and touring bicycles had largely gravitated towards Japanese or European brands.