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In 1915 Cleveland introduced a 221 cc (13.5 cu in) [3] displacement two-stroke single-cylinder engine with a longitudinal crankshaft orientation, necessitating a worm drive to turn the axis of rotation of the drive to the transmission by 90°. [1] The transmission was a two speed with a sprocket turning a chain final drive.
The original YZ250 of 1974 used an air-cooled 250cc two-stroke engine of 70 mm bore and a 64 mm stroke, which was improved semi-annually. The air-cooled motor was replaced in 1982 with a 249 cc liquid-cooled two-stroke reed-valved engine with a mechanical, rather than servo-driven, YPVS exhaust valve for a wider spread of power.
The Yamaha YZ125 is a motocross racing motorcycle with a two-stroke 124.9 cc (7.62 cu in) displacement single-cylinder engine made by Yamaha since 1974. It is available to the public. For the first two years it was made with dual rear shocks, then changing to a monoshock. [3]
This is an accepted version of this page This is the latest accepted revision, reviewed on 12 February 2025. Classified advertisements website Craigslist Inc. Logo used since 1995 Screenshot of the main page on January 26, 2008 Type of business Private Type of site Classifieds, forums Available in English, French, German, Dutch, Spanish, Italian, Portuguese Founded 1995 ; 30 years ago (1995 ...
In internal combustion engines, a split-single design is a type of two-stroke where two cylinders share a single combustion chamber. The first production split-single engine was built in 1918 and the design was used on several motorcycles and cars until the mid-1950s, although Puch continued producing split-single engines for motorcycles until ...
Yamaha Y125Z or better known as Yamaha Z (in Europe, Thailand and Vietnam) is a 125 cc two-stroke moped or underbone motorcycle produced by Yamaha. Debuted in 1998 as a successor of Yamaha Y110SS , the Y125Z was the first two-stroke underbone motorcycle with an YEIS catalytic converter .
499 cc (30 cu in), 2-stroke, four-cylinder, liquid-cooled, reed valve induction with YPVS Bore Stroke 56.4 mm × 50.0 mm (2.22 in × 1.97 in) Compression Ratio 6.6:1 Fuel System Mikuni VM26SS 26 mm (1.0 in) carburettor x 4 Lubrication Yamaha Autolube two stroke injection, transmission gear pump. Ignition
Prina (1949–1954) 125cc two-stroke scooter, in 1952 the 175cc JLO-powered Orix-Prina in conjunction with Orix — Italy [56] [97] Prior (1950s), Rebadged German Hercules scooters by Industria Ltd of London for the UK and Commonwealth markets, models included the Viscount — United Kingdom/West Germany [98] Puch — Austria