differential located near the centre of the car, which then transferred drive to the rear axle via roller chains. This system allowed for a relatively simple design which could accommodate the vertical axle movement associated with the rear suspension system. Frazer Nash were strong proponents of this system using one chain per gear selected by dog clutches. Their chain drive system, (designed for the GN Cyclecar Company) was very effective, allowing for fast gear selections. This system was used in many racing cars of the 1920s and 1930s. The last popular chain drive automobile was the Honda S600 of the 1960s. Motorcycles Chain drive versus belt drive or use of a driveshaft is a fundamental design decision in motorcycle design; nearly all motorcycles use one of these three designs. See also Bicycle chain Chain pump Chainsaw Gear Rolling mills References Bibliography Needham, Joseph (1986). Science and Civilization in China: Volume 4, Chemistry and Chemical Technology, Part 2, Mechanical Engineering. Taipei: Caves Books Ltd. Sclater, Neil. (2011). "Chain and belt devices and mechanisms." Mechanisms and Mechanical Devices Sourcebook. 5th ed. New York: McGraw Hill. pp. 262–277. . Drawings and designs of various drives. External links The Complete Guide to Chain Motorcycle primary and drive chains explained Mechanics Automotive transmission technologies Chinese inventions Mechanical power control Mechanical power transmission