Yamaha XS1100 motorcycle, 1978.
© Science Museum / Science & Society Picture Library
Sectioned. When this motorcycle was first built in 1978, it was designed to be the fastest production 4-stroke in the world, combining the speed of a superbike, the nimblenes of a roadster and the comfort of a tourer. It is powered by a 4-cylinder, 4-stroke engine with a capacity of 1102cc, and was capable of 134 mph. It incorporates a 5-speed gearbox and double disc brakes on the front and single disc on the rear wheels. An electric starter motor is fitted, with a kick-starter for emergency use.