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Prior to the late 2010s, forced induction was only used on a handful of production motorcycles, all from Japanese Big Four manufacturers in the early 1980s. [1] [2] [3] Honda 1982 CX 500 Turbo / 1983 650 Turbo; Yamaha 1982-1983 XJ 650 Seca Turbo; Suzuki 1983 XN 85 Turbo; Kawasaki 1983-1985 GPZ750 Turbo; Honda CX650 Turbo had a 674 CC, 100 BHP V ...
"Cutaway of Yamaha Genesis inline-four 20-valve engine" The DOHC Genesis engine has five valves per cylinder and downdraft carburetors. Yamaha adopted the 5-valve concept, using three intake valves and two exhaust valves per cylinder, because it allowed both excellent volumetric efficiency and high RPM. As designers began to appreciate the ...
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 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]
A "twingle" is a four-stroke twin-cylinder engine with an altered firing order designed to give power pulses similar to a single-cylinder four-stroke engine. Inline twins with a 360° crankpin offset or flat-twins can be easily converted into twingles by firing both of the cylinders at the same time and installing a camshaft or camshafts that ...
The Yamaha YZF1000R Thunderace was a motorcycle produced by Yamaha from 1996 until 2005. The YZF1000R was a stop-gap bike from the FZR1000 to the YZF-R1 and produced from existing parts bins. [4] [3] [permanent dead link ] The Thunderace five-valve four-cylinder engine was derived from the FZR1000, and the frame was adapted from the YZF750R. [5]
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The company also entered motorcycle racing and won a number of titles. [1] In 1990 the company began a business relationship with Yamaha. Five years later it employed 350 people and engine production had reached 450,000 units a year. In 2002, following changes in the world motorcycle market, Motori Minarelli became a member of the Yamaha Group.