Outboard motor Wikipedia. Basic parts of an outboard motor. An outboard motor is a propulsion system for boats, consisting of a self contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom. They are the most common motorized method of propelling small watercraft. As well as providing propulsion, outboards provide steering control, as they are designed to pivot over their mountings and thus control the direction of thrust. The skeg also acts as a rudder when the engine is not running. Unlike inboard motors, outboard motors can be easily removed for storage or repairs. An outboard motor is a propulsion system for boats, consisting of a selfcontained unit that includes engine, gearbox and propeller or jet drive, designed to be. PCBAltiunAltium. Motown Album Discography, Part 1 19611981 by David Edwards and Mike Callahan Last update August 7, 2012 The first two dozen albums 600624, have been originally. 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In order to eliminate the chances of hitting bottom with an outboard motor, the motor can be tilted up to an elevated position either electronically or manually. This helps when traveling through shallow waters where there may be debris that could potentially damage the motor as well as the propeller. If the electric motor required to move the pistons which raise or lower the engine is malfunctioning, every outboard motor is equipped with a manual piston release which will allow the operator to drop the motor down to its lowest setting. General usesedit. A motorboat with an outboard motor attached to it. Large OutboardseditLarge outboards are usually bolted to the transom or to a bracket bolted to the transom, and are linked to controls at the helm. These range from 2, 3 and 4 cylinder models generating 1. V6 and V8 cylinder blocks rated up to 5. Rogue States By Noam Chomsky Pdf. W. ,2 with sufficient power to be used on boats of 3. PortableeditSmall outboard motors, up to 1. They are affixed to the boat via clamps, and thus easily moved from boat to boat. These motors typically use a manual start system, with throttle and gearshift controls mounted on the body of the motor, and a tiller for steering. The smallest of these weigh as little as 1. Finding Halfway Between Two Numbers Game there. This type of motor is typically used to power small craft such as jon boats, dinghies, canoes, etc. In this application, the motor is frequently installed on the transom alongside and connected to the primary outboard to enable helm steering. In addition many small motor manufacturers have begun offering variants with power trimtilt and electric starting functions so that they may be completely controlled remotely. Electric powerededitCommonly referred to as trolling motors or electric outboard motors, electric outboards are usedon very small craft or on small lakes where gasoline motors are prohibited,as a secondary means of propulsion on larger craft, andas repositioning thrusters while fishing for bass and other freshwater species,and any other application where their quietness, and ease of operation and zero emissions outweigh the speed and range deficiencies. Pump jeteditPump jet propulsion is available as an option on most outboard motors. Although less efficient than an open propeller, they are particularly useful in applications where the ability to operate in very shallow water is important. They also eliminate the laceration dangers of an open propeller. PropaneeditPropane outboard motors are available from several manufacturers. These products have several advantages such as lower emissions, lower cost of fuel, and no need for choke once the system is pressurized. History and developmentseditThe first known outboard motor was a small 5 kilogram 1. Gustave Trouv,4 and patented in May 1. Patent N 1. 36,5. Later about 2. 5 petrol powered outboards may have been produced in 1. American Motors Co4but neither of these two pioneering efforts appear to have had much impact. The Waterman outboard engine appears to be the first real gasoline powered outboard offered for sale. Developed by Cameron Waterman,7 a young Yale Engineering student, it was developed from 1. Starting in 1. 90. Porto Motor1. 1 units,1. The inboard boat motor firm of Caille Motor Company of Detroit were instrumental in making the cylinder and engines. The most successful early outboard motor,1. Norwegian American inventor Ole Evinrude in 1. Between 1. 90. 9 and 1. Evinrude made thousands of his outboards and the three horse units were sold around the world. His Evinrude Outboard Co. ELTO company to produce a two cylinder motor ELTO stood for Evinrude Light Twin Outboard. The 1. 92. 0s were the first high water mark for the outboard with Evinrude, Johnson, ELTO, Atwater Lockwood and dozens of other makers in the field. Historically, a majority of outboards have been two stroke powerheads fitted with a carburetor due to the designs inherent simplicity, reliability, low cost and light weight. Drawbacks include increased pollution, due to the high volume of unburned gasoline and oil in their exhaust, and louder noise. Four stroke outboardseditAlthough four stroke outboards have been sold since the late 1. Typing Master Full Version With Crack For Windows 8. Roness and Sharland, in 1. Homelite introduced a commercially viable four cycle outboard a 5. Crosley automobile engine. This was called the Bearcat that was later purchased by Fischer Pierce who are the makers of Boston Whaler for use in their boats because of their technical superiority and efficiency over two strokes. In 1. 96. 4, Honda Motor Co. In 1. 98. 4, Yamaha introduced their first four stroke powerhead. These motors were only available in the smaller horsepower range. In 1. 99. 0 Honda released 3. They continued to lead in the development of four stroke engines throughout the 1. US and European exhaust emissions regulations such as CARB California Air Resources Board led to the proliferation of four stroke outboards. At first, North American manufacturers such as Mercury and OMC used engine technology from Japanese manufacturers such as Yamaha and Suzuki until they were able to develop their own four stroke engine. The inherent advantages of four stroke motors included lower pollution especially oil in the water, noise reduction, increase fuel economy, increased low end torque, and smoother operation. Honda Marine Group, Mercury Marine, Mercury Racing, Nissan Marine, Suzuki Marine, Tohatsu Outboards, Yamaha Marine, and China Oshen Hyfong marine have all developed new four stroke engines. Some are carburetted, usually the smaller engines. The balance are electronically fuel injected. Depending on the manufacturer, newer engines benefit from advanced technology such as multiple valves per cylinder, variable camshaft timing Hondas VTEC, boosted low end torque Hondas BLAST, 3 way cooling systems, and closed loop fuel injection. Mercury Verado four strokes are unique in that they are supercharged. Mercury Marine, Mercury Racing, Tohatsu, Yamaha Marine, Nissan and Evinrude each developed computer controlled direct injected two stroke engines. Each brand boasts a different method of DI. Fuel economy on both direct injected and four stroke outboards measures from a 1. Depending on rpm and load at cruising speeds, figure on about a 3. Propane OutboardseditIn 2. Lehr inc. Produced the first line of propane powered outboards. Designer Bernardo J. Herzer marked these outboards as low cost, green, and low maintenance. The first models included a 5 hp option and a 2. Since their introduction, Tohatsu has released their own 5hp versions. The Lehr original currently offers sizes ranging from the original 2. Propanes advantages over gasoline include increased fuel stability, lower emissions, and reliability.