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A stroke is the action of a piston travelling the full length of its cylinder.In a two-stroke engine, one of the two strokes combines primarily the intake stroke and the combustion stroke, while the other stroke primarily combines the compression stroke and the exhaust stroke, though technically since both ports are exposed during both the combustion and compression strokes, some reversion ...
It has the Yamaha Power Valve System 'YPVS' which raises and lowers the exhaust port depending on the rpm of the engine. The YPVS servo motor starts to open at about 6,000rpm. In standard form it produced 45 hp due to the restrictive standard exhausts and ignition boxes. [2]
It had a parallel-twin two-stroke engine with identical bore and stroke of its predecessor, the Yamaha RD350LC. Yamaha debuted their breakthrough YPVS power valve system that revolutionized the two-stroke engine in the RD350 YPVS of 1983 . In some countries, like the US, the YPVS models were sold as Yamaha RZ350. It was made in Japan from 1983 ...
Two-stroke engines often have a higher power-to-weight ratio than a four-stroke engine, since their power stroke occurs twice as often. Two-stroke engines can also have fewer moving parts, and thus be cheaper to manufacture and weigh less. In countries and regions with stringent emissions regulation, two-stroke engines have been phased out in ...
Power band; Two-stroke power valve system; S. Scavenging (engine) Schnuerle porting; Split-single engine; T. Throttle response; Transfer port; Two-stroke diesel ...
It is powered by a twin-carburetted reed valve inducted, liquid-cooled, 347cc parallel-twin two-stroke engine, with a bore and stroke of 64mm x 54mm. It was the first RD series from Yamaha to receive the 'YPVS' Yamaha Power Valve System.
The unemployment rate edged up moderately to 4.2% from October's 4.1%. A new labor reading for December is due on January 10, 2025 — the first major economic report in the new year.
The Kawasaki KMX is a water-cooled 2-stroke motocross bike.There are two versions, the KMX 125 cc and the larger 200 cc model under the KMX title. They both feature front and rear disc brakes, water-cooled engines, mono link suspension (Kawasaki's Uni-Trak system) and a power valve system (KIPS).