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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.
Yamaha YA-1 at the Tokyo Motor Show in 2005. In the early-1950s, Yamaha had to replace its musical instrument factories as they were severely damaged during the war. Yamaha was also facing the industrial conversion of factory machine tools that had been used during the war for the production of fuel tanks, wing parts, and propellers for aircraft of the Imperial Japanese Navy, such as the ...
Yamaha decided to differentiate itself from its previous YA1 design by creating a new engine with two in-line cylinders, 2 strokes, and 247 cubic centimeters, cooled by air. This innovative approach signified Yamaha's entry into the 2.5 cubic centimeter category, hence earning it the title “the first two and a half for Yamaha.”
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 XS Eleven was the first four-cylinder four-stroke motorcycle from Yamaha. [4] It built on technology first used by Yamaha in their earlier XS 750 four-stroke triple, but was an entirely new development and design. The XS 1100 engine was a new clean-sheet design with several innovative and relatively unconventional elements compared to other ...
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 Yamaha Virago was Yamaha's first V-twin cruiser motorcycle, and one of the earliest mass-produced motorcycles with a mono-shock rear suspension. Originally sold with a 750 cc (46 cu in) engine in 1981, Yamaha soon added 500 cc (31 cu in) and 920 cubic centimetres (56 cu in) versions.
Yamaha claimed this was the world's first mass-produced four-valve motorcycle engine. [3] The TX500 was also claimed to be the first motorcycle to use an integrated circuit-based voltage regulator. [8] The air/fuel mixture was delivered by two 32 mm Keihin constant-velocity (CV) carburetors in early models and by 38 mm Mikunis beginning in 1976.