Gavin Trippe

Gavin Trippe (1940 – 2 July 2018) was a motorcycle racing promoter, journalist, and publisher who was inducted to the Motorcycle Hall of Fame in 2005. He died following an automobile accident in California.

Trippe was a motorcycling journalist in the UK until he founded a motorcycling magazine, Motor Cycle Weekly, in the United States in 1969. Since 2007 Trippe worked to create a single cylinder racing class with low barriers to entry for amateur racers and young riders.

Race classes Trippe started the Carlsbad United States Grand Prix in 1973, and invented supermoto in 1979. Trippe also helped create the AMA Superbike Championship in 1976. Other events Trippe promoted included the Trans-AMA motocross series, the Trans-Atlantic Match Races, and Ascot half-mile dirt track racing. In 2007 he proposed a new American single cylinder class based on the success of European supermono. creating an event at Carlsbad, California which grew into a major international venue. The 1971 motocross race at Carlsbad Raceway attracted 21,000 spectators and 15 million television viewers. and the event became the Hang Ten Carlsbad United States Grand Prix (USGP), run under the auspices of the American Motorcyclist Association (AMA), and sanctioned as a Grand Prix event by the Fédération Internationale de Motocyclisme (FIM). It was the 7th round of the 1973 Trans-AMA, the only US event at the time to pay points in the FIM World 500 cc Championship. For second year of the event, 1974, the course was lengthened by ¼ mile, to , with the new section having a left turning uphill corner followed by a sharp right turn into a ravine. The 1974 purse grew to US$30,000, and 60 riders from 13 countries competed in the race, by then the eighth stop on the race circuit earning points to the 500 cc championship. Motocross popularity declined in the 90s, and by 1995 there was no motocross Grand Prix in the US, until the FIM championship returned in 2010. In 1984 Trippe began to worry that development was encroaching on Carlsbad Raceway, and that the site would be sold when his lease expired.

Supermoto

Trippe was the inventor and early promoter of supermoto, which combines on a single course three genres of motorcycle racing: the hard-packed, flat dirt of track racing, the uneven obstacles and jumps of motocross, and the high speed straights and turns of paved road racing. The original purpose was to find out who was the best overall motorcycle racer from the three disciplines. Trippe began thinking that, "The huge mass doesn't know the difference between dirt track, motocross and road racing." The ten best riders from each discipline, motocross, dirt track and road racing, would be race together because, "All these riders know one another and respect one another, but they never race one another. This is a way we can pitch them all in together. We've tried to lay out a course where all branches will be competitive," said Trippe. Besides combining road racing with dirt racing, Superbikers brought together top riders from different specialties, like an all-star game. After the end of Superbikers television run, supermoto declined in the US but grew in Europe, until 2003 when AMA Pro Racing began a supermoto championship.

Formula 450 series Trippe proposed the creation of a new US single cylinder road racing class based on repurposed motocross bikes. It was to be called "Super Single" but later the proposed name was changed to Formula 450, or F450. Trippe had been lobbying for the creation of a Formula 450 class because it would be more affordable to rookie and under-21-year-old riders, compared to 600 cc supersport sport bike racing.

After a few years of development and testing, Formula 450s became motocross bikes which had been converted to road racing by installing 17-inch wheels, larger front brakes, clip on handlebars and aerodynamic fairings. Replacing the forks with parts from supersport sport bikes was unsuccessful because the forks were too short, leading to too little trail. The USGPRU also published a detailed technical account of how to build Formula 450 racer from a donor motocross bike. Formula 450 was not run in 2010 or scheduled for 2011.

Inspired by Trippe's development and promotion of this idea, the AMA announced in July 2009 there would be a single cylinder series to be called Formula 450, but as a spec series, with identical bikes built, owned, and maintained by single manufacturer provided to all riders, rather than bikes adapted by riders from motocross bikes. Two months later, AMA Pro Road Racing announced that the new class would be called GT3, an expansion of the SunTrust Moto-GT.