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A straight-twin engine, also known as an inline-twin, vertical-twin, inline-2, or parallel-twin, is a two-cylinder piston engine whose cylinders are arranged in a line along a common crankshaft. Straight-twin engines are primarily used in motorcycles; other uses include automobiles, marine vessels, snowmobiles, jet skis , all-terrain vehicles ...
Pages in category "Motorcycles powered by straight-twin engines" ... Ducati parallel twins; H. Honda 500 twins; Honda C71, C76, C72, C77 Dream; Honda C92, CB92, C95 ...
The Ducati parallel twins are a series of 350 cc (21 cu in) and 500 cc (31 cu in) parallel twin SOHC motorcycles produced by the Italian manufacturer Ducati from 1975 to 1981, although 67 Sports Desmos were supplied to Australian importer Frazers in 1983.
The original Triumph Bonneville was a 650 cc parallel-twin motorcycle manufactured by Triumph Engineering and later by Norton Villiers Triumph between 1959 and 1974. It was based on the company's Triumph Tiger T110 and was fitted with the Tiger's optional twin 1 3/16 in Amal monobloc carburettors as standard, along with that model's high-performance inlet camshaft.
Motorcycles with a V-twin engine mounted with its crankshaft mounted in line with the frame, e.g. the Honda CX series, are said to have "transverse" engines, [1] [2] while motorcycles with a V-twin mounted with its crankshaft mounted perpendicular to the frame, e.g. most Harley-Davidsons, are said to have "longitudinal" engines.
The KTM 790 Duke is a naked parallel-twin motorcycle, manufactured by KTM from 2017. The Duke's 799 cc (48.8 cu in) liquid cooled eight-valve DOHC engine uses a 285° crankshaft in order to mimic KTM's 75° V-Twins. Its power output is 95 bhp in Europe (2023–present), and 105 bhp for the rest of the world.
Both models, Interceptor and Continental GT, share the same engine, frame, suspension, wheels, brakes, exhausts and mufflers. The engine is a wet-sump, 648 cc, air/oil cooled SOHC, 8v, parallel twin. Fuelling is via Bosch injection and engine management. The low 9.5:1 compression ratio will help the engine tolerate lower-octane fuel.
Parallel twin. Predates the "Turner Twins". Scrapped when Turner came in, the design later resurfaced, modified, as the BSA A10. 2H, 2H, 3S, 3SC, 3SE, 3H, 5H, 6S, 1937-1940 Tiger 70 249 1937-1940 OHV single Tiger 80: 349 1937-1940 OHV single Tiger 90 497 1937-1940 OHV single 5T Speed Twin: 498 1937-40,1946–58 parallel twin, OHV Tiger 100: 498