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Two-stroke chainsaws require about 2–5% of oil in the fuel to lubricate the engine, while the motor in electrical chain-saws is normally lubricated for life. Most modern gasoline-operated saws today require a fuel mix of 2% (1:50).
A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes of the piston (one up and one down movement) in one revolution of the crankshaft.
The only moving parts inside simple two-stroke engines are the crankshaft, the connecting rod, and the piston. It is the same simplicity in design, however, that causes a two-stroke engine to be less fuel-efficient and produce high specific levels of undesirable exhaust gas emissions. At the bottom of the power stroke, the transfer ports, which ...
“For some reason, it all seems like it’s compartmentalized,” she said. “And sports shouldn’t be that. It should be the best sportsperson out there.
A Hawaiian Airlines flight approaches Ellison Onizuka Kona International Airport at Keahole on the island of Hawaii on January 18, 2024. A 2022 incident of turbulence aboard a Hawaiian Airlines ...
Meet Gout Gout, the 16-year-old Australian sprinter who recorded the fourth-fastest time by an Australian in the 100-meter race on Friday, Dec. 6. Gout, largely touted as the next Usain Bolt ...
The gas-generator cycle, also called open cycle, is one of the most commonly used power cycles in bipropellant liquid rocket engines. Propellant is burned in a gas generator (or "preburner") and the resulting hot gas is used to power the propellant pumps before being exhausted overboard and lost.
Brazil expects the South American trade bloc Mercosur to speed up more free trade negotiations after clinching a deal with the European Union, as the threat of U.S. tariffs forces countries to ...