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Basic parts of an outboard motor
An outboard is a boat propulsion system, consisting of a separate unit that includes the engine, gearbox or similar and the propeller or propeller, designed to be placed on the outside of the crossbar. They are the most common method of motorization for a small boat. In addition to providing the propulsion, the outboard motors provide steering control as they are designed to pivot on their mounts and therefore control the thrust direction. The tail also acts as a rudder when the engine is not running. Unlike inboard engines, outboard motors can be easily removed for storage or repair.
In order to eliminate the background possibility with an outboard engine, the engine can be tilted to an elevated position, either electronically or manually. This helps when traveling through shallow water where there may be debris that could damage the engine as well as the propeller. If you have the electrical system needed to move the pistons to raise or lower the engine and it is malfunctioning, each outboard is equipped with a manual release system that will allow the operator to lower the engine to the lowest position.
Great Outboard Motors
Outboard engines are usually bolted to the transom (or on aft stud bracket), and are tied to controls at the rudder. These range from the 2 and 4 and 4-cylinder models and generate 15 to 135 horsepower, suitable for helmets up to 5 m in length, to powerful V6 and V8 engine blocks with a horsepower of up to 557 horsepower 415 KW), with enough power to be used on 37-foot (11 m) boats or more.
Small outboard engines, up to 15 hp more or less are easy to carry. They are attached to the boat through the clamps, and therefore easily fit the boat. These engines usually use a manual start system, with acceleration controls and a gear shifting in the engine body or they can carry (centrifugal clutch instead of gearbox) and a steering rudder. The smallest of these weigh just 8 kilograms (18 pounds), have integral fuel tanks and provide enough energy to move a small auxiliary vessel to about 8 knots (15 km / h 9.2 mph). This type of motor is normally used:
Provide auxiliary power for sailboats, for slow drags, such as small outboard motors typically more efficient at crawl speeds. In this application, the motor is often installed in the crossbar and connects to the primary outboard motor to allow steering of the rudder.
These engines are commonly used in very small engines or in small lakes where gasoline engines are prohibited as a secondary means of propulsion for larger vessels and as auxiliary propellers for fishing for seabass and other freshwater species, bottom trolling and Any other application where the tranquility, comfort of use and zero emissions overcome the deficiencies of speed and performance.
Jet propulsion is available as an option on most outboard engines. 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 dangers of laceration of an open propeller.
The height of the engine on the crossbar is an important factor in achieving optimum performance. The engine should be as high as possible. This minimizes the effect of hydrodynamic resistance during navigation, allowing greater speed. Generally, the anti-cavitation plate should be about the same height as the keel, with the adjustment in neutral setting.
Trim is the angle of the motor relative to the hull. The ideal angle is one in which the boat sails level, with most of the hull on the surface instead of plowing through the water.
The adjustment of the optimal setting will vary depending on many factors such as speed, hull design, weight and balance, and conditions in the water (wind and waves). Many of the large outboard engines are equipped with hydraulic trim, an electric motor in the engine mount, with a switch at the helm that allows the operator to adjust the angle on the fly. Engines not fitted with hydraulic trim are manually adjustable using a locking pin called the Topper.