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The Evinrude E-TEC was the first outboard engine technology to win the US Environmental Protection Agency's Clean Air Excellence Award, which recognizes low emission levels. According to the EPA, when compared to a similar four-stroke engine at the time of the award, carbon monoxide emissions with Evinrude E-TEC were typically 30 to 50 percent ...
The first two engines built by Mengin were designed by René Poinsard and are often referred to by his name The Mengin B or Poinsard 25 hp was the first and smaller of the two. Aimed at very small, single seat sport aircraft it went into production from about 1933. Production ceased when France was invaded in 1940. [1]
In 2008 Ski-Doo introduced the XP chassis, which moved the rider further forward with major weight reduction. The XP was the lightest machine available, with power-to-weight ratios in the Summit models for the first time under 3 lb per HP. For the 2017 snow year, Ski-Doo will release its most powerful engine. The Rotax 850 cc "Etec" engine.
They started building inboard 2-cycle marine engines in 1903 in a barn behind the house, along with matching boats. By 1908, they were making V4, V6, V8, and V12 aircraft and marine engines. In 1910, they built the first U.S. monoplane to exhibit their aircraft engines. By 1912, their V-12 was making 180 hp, when disaster struck the factory.
Typically in smaller (less than 10 hp or 7.5 kW) and older engines, a narrow shear pin through the drive shaft and propeller hub transmits the power of the engine at normal loads. The pin is designed to shear when the propeller is put under a load that could damage the engine.
Contra-rotating propellers Contra-rotating propellers on the Rolls-Royce Griffon-powered P-51XR Mustang Precious Metal at the 2014 Reno Air Races. Aircraft equipped with contra-rotating propellers (CRP) [1] coaxial contra-rotating propellers, or high-speed propellers, apply the maximum power of usually a single piston engine or turboprop engine to drive a pair of coaxial propellers in contra ...