Gyronaut X-1

Gyronaut X-1 was a streamliner motorcycle that set the motorcycle land-speed record of 245.667 mph (395.363 km/h) in 1966, ridden by Detroit Triumph dealer Bob Leppan.^[1] It was powered by two 650 cc Triumph TR6 Trophy motorcycle engines.^[1][2]

Gyronaut X-1 displayed at Quail Motorcycle Gathering, Carmel, California during 2015

The streamlined body was designed by Alex Tremulis, who designed automobiles including the Tucker automobile and Ford Gyron.^[2][3][4]

It had innovative safety equipment including a cromoly steel roll cage and fire suppression equipment.^[2]

Gyronaut crashed in 1970 at over 280 mph (450 km/h).^[5] Four decades later, Steve Tremulis, nephew of the designer, displayed the partially restored Gyronaut to the public for the first time in early 2012.^[3] It was shown fully restored at Speed Week in 2013,^[6] and won a special award at the 2014 Quail Motorcycle Gathering.^[4]

See also

• List of motorcycles by type of engine