Honda CB100

The Honda CB100 is a small single-cylinder four-stroke motorcycle from Honda that was produced from 1971 to 1985. It was designed to replace the S 90, which looked too similar to the 50 cc bikes, and its cylinder is tilted 20 degrees forward. The engine reaches a piston speed of 17.3 metres a second at 10,500 revolutions a minute, a value that shortly before its appearance was still treated as a limit meant only for racing machines, yet the engine pulls well from 6,000 revolutions. The well matched gearbox lets it reach 100 kilometres an hour in 21 to 22 seconds, and top speed was about 110 kilometres an hour. Its full designation is Honda CB 100 Super Sports, and its specific output of 115 PS per litre compares with about 89 PS per litre for the 1969 Honda CB 750 Four.