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The Yamaha DT250 was preceded by the 1968 DT-1. The DT250 began production in 1971 and was produced through 1982. Other models produced in the DT250 group were the DT250F and DT250MX. [2] The DT250 was released three years earlier than the Yamaha DT125. The DT250 was one of the leading dual-sport machines in the 1970s. [3]
The Yamaha DT is a series of motorcycles and mopeds produced by the Yamaha Motor Corporation. Models in the DT series feature an engine displacement of 50 to 400 cc (3.1 to 24.4 cu in). The first DT model, the DT-1, was released in 1968 and quickly sold through its initial 12,000 production run.
The first bike manufactured by Yamaha was actually a copy of the German DKW RT 125; it had an air-cooled, two-stroke, single cylinder 125 cc engine [1] YC-1 (1956) was the second bike manufactured by Yamaha; it was a 175 cc single cylinder two-stroke. [1] YD-1 (1957) Yamaha began production of its first 250 cc, two-stroke twin, the YD1. [1]
Yamaha produced the enduro DT1 250 in 1968. The motorcycle was embraced and Yamaha learned that, in America riders were interested in motorcycles which could operate off-road, and on road. Yamaha experimented with larger displacement and in 1975 they created the DT400B. The DT400B did not initially sell well, and Yamaha reduced the price.
The carbs were increased to 28 mm in 1975 and were rubber mounted. [2] The carbs were reduced to 26 mm on the X7 to increase mid-range power. [7] The engine was lubricated by Suzuki's CCI system. [2] Primary drive was by helical gears to a multi-plate wet clutch. [2] The six speed gearbox received revised second and third gear ratios in 1976.
Yamaha was the first to build a production monoshock motocross bike (1975 for 250 and 400, 1976 for 125) and one of the first to have a water-cooled motocross production bike (1977 in works bikes, 1981 in off-the-shelf bikes). Yamaha's first Motocross competition four-stroke bike, the YZ400F, won the 1998 USA outdoor national Championship with ...
The Yamaha RD250 is a 250 cc (15 cu in) two-stroke motorcycle produced by Yamaha Motor Corporation between 1973 and 1987.. Four generations of RD (also known as the RZ250 in the Japanese and Australian markets) were produced: the air-cooled models from 1973 up to 1979, and from 1980 until 1987 the liquid cooled models; known as the RD250LC, RD250LC-II and RD250 YPVS.
The Yamaha TZ 250 was a commercially available racing motorcycle with a watercooled, two-stroke, 250 cc engine produced by the Japanese manufacturer Yamaha. The basis of the production-volume racer was the OW17 factory machine from Yamaha, which was used in the motorcycle world championship from 1973 to 1990, and with which Dieter Braun became ...