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The SR400 has an air-cooled 4-stroke single cylinder SOHC 2-valve engine with a dry-sump, with the downtubes of the motorcycle's frame serving as the engine's oil reservoir and cooling system, [6] thereby eliminating the need for an external oil cooler, reducing engine pumping losses, and allowing increased ground clearance as well as reduced ...
The 2019 model has a new rear swingarm, changes to the frame and bodywork, a new engine with Variable Valve Actuation (VVA). [clarification needed] There is a small 2021 update, that adds a vapor canister to the fuel system, presumably to help the bike comply with the more strict Euro 5 emission standard.
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]
"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 ...
Yamaha YZR500. The RD500LC (Race Developed 500CC Liquid Cooled motorcycle) uses a 50-degree, twin-crankshaft V4 engine layout.Linked Yamaha YPVS exhaust power valves are controlled by a single electronic unit and servo motor and are designed to give a broader power band.
The Yamaha MT-09 is a street motorcycle of the MT series with an 847–890 cc (51.7–54.3 cu in) liquid-cooled four-stroke 12-valve DOHC inline-three engine with crossplane crankshaft [1] [9] and a lightweight cast alloy frame. [5] For 2018, the bike is now designated MT-09 in all markets. [10]
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Yamaha RS-100T Torque induction series, also known as RS-100 series, is a series of two-stroke motorcycle models manufactured by Yamaha Motors Co. Ltd as a successor of the Philippines' most popular 2T motorcycle/tricycle model. It debuted in 1977 especially for the Asian market (although it is identical with the original design of the RS-100 ...