![]() ![]() ![]() We do want to note that when choosing outboards, you’ll further have to choose between two-stroke and four-stroke models. Outboard engines hold a number of advantages over other power systems. Finally, if an outboard engine needs replacement it’s a far simpler job than replacing any other type of power source. ![]() And a new option with outboards is joystick control, which greatly enhances dockside maneuverability. They also tend to have excellent efficiency, even while attaining speeds in excess of other power systems. Today’s outboards are smoke-free, quiet, and don’t create nearly as much vibration as those of yesteryear. Start with their newfound reliability while you could count on those old-tech outboards to break down with depressing regularity, these days, it’s common to go for five or six seasons without lifting a finger beyond regular maintenance. Outboard Motors Modern outboards have a long list of advantages. Boat Engine Advantages Different types of boat engines and propulsion systems have unique plusses and minuses, so let’s look at each in detail. That means you don’t need calculus or a super-computer to make good boat-buying decisions, and your job is merely picking the best power options from those offered for a given boat that meet your needs. So naturally, the type and size boat you’re considering will, to some degree, dictate the engine choices you’re presented with. Naval architects and engineers use complex formulas to determine the correct range of engine options for a given boat, and then you get to choose. Different options work better with different types of boats, and limited choices are offered with most boat models. Even electric or hybrid power may be in the running. Powerboats can run on several types of engines or engine packages and in addition to those we’ve already mentioned you may also need to choose between single and twin engines, or between gasoline or diesel. A stern drive IO, also known as an inboard outboard, has an outboard lower unit connected through the transom of a boat to an inboard gas/petrol or diesel engine.What kind of boat engine and drive system is best for your needs? The answer depends on a number of variables. Widely available on boats under 30 feet (or 9 meters), sterndrive inboard outboards have a lot of advantages when compared to inboard boat motors. Performance: An inboard outboard motor is known for more speed and boat trim ability while cruising.The outdrive positioning in the far back of the boat (as opposed to further forward like inboards) helps improve the performance. Maintenance: One of the biggest disadvantages of an IO drive is the higher maintenance requirements.While not as big of an issue in freshwater, a sterndrive IO exposed to salt or brackish water is prone to corrosion. To minimize the damage, zinc anodes should be replaced often and antifouling outdrive boat paint should be used annually. Reliability: Due to the potential corrosion issues, a sterndrive IO may have a shorter lifespan than an inboard boat motor.Convenience: The tilt mechanisms on an IO outdrive enables a boat to go into shallower water than an inboard engine boat.Ī sterndrive replacement is a likely repair with an older boat. ![]() Maneuverability is also easier for a boat with inboard outboard drives.
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