![]() ![]() The first commercial introduction of sterndrives was the Volvo Penta "Aquamatic" at the 1959 New York Motor Boat Show. In 1959 Wynne left Kiekhaefer and in less than 90 days developed his own stern drive, which he subsequently patented. During the 1950s, he and fellow engineer Jim Wynne worked at Mercury under founder Carl Kiekhaefer, who was initially dismissive of and opposed to a technology that would later capture 80% of the market. In 1948, Mercury Marine engineer Charlie Strang mated an aluminum car racing engine to the lower unit of an outboard motor, creating a marine propulsion system more powerful than the outboard motors available at the time. The history of stern drive power begins in the First World War with the production of the MAS of Isotta Fraschini, with two counter-rotating propellers. Mercruiser have a slightly larger market share in the US, while in Europe Volvo Penta has an approximate 80% market share. Other brands of sterndrive include MerCruiser (produced by Brunswick Corporation's Mercury Marine, which also manufactures outboard motors). In Europe diesel engines are more popular, ranging up to 400 hp in models such as the Volvo Penta D6A-400. Historically the most popular in North America were " marinised" versions of Chevrolet and Ford V-8 automotive engines. Sterndrive engines are similar to those used in true inboard systems. The outdrive can be matched with a variety of engines in the appropriate power range upper and lower units can often be purchased separately to customize gear ratios and propeller RPM, and lower units are also available with counter-rotating gearing to provide balanced torque in dual-drive installations. ![]() The outdrive is pivoted up for trailer travel and between uses to avoid fouling. The boat is steered by pivoting the outdrive, as on an outboard motor no rudder is needed. The outdrive resembles the bottom half of an outboard motor and is composed of two sub-units: an upper containing a driveshaft connected through the transom to an engine which transmits power to a 90-degree-angle gearbox and the lower containing a vertical driveshaft receiving power from the upper unit gearbox, transmitted through another 90-degree-angle gearbox to the propeller shaft. The drive unit (outdrive) carries power from the inboard engine, typically mounted above the waterline, outboard through the transom and downward to the propeller below the waterline. The engine sits just forward of the transom while the drive unit ( outdrive or drive leg) lies outside the hull. Order the parts you need today and you will have the products at home tomorrow.The outdrive unit of a boat with sterndriveĪ sterndrive or inboard/outboard drive ( I/O) is a form of marine propulsion which combines inboard power with outboard drive. And that makes sailing even more fun! Because we purchase sharply and in large volumes, we are always able to offer you the best price. With us you will find a wide range of parts for brands of engines including Yamaha, Mercury, Evinrude Johnson, Suzuki, Honda, Force, Tohatsu, Selva, Parsun, Volvo Penta, Yanmar, Mercruiser and more. More than 40,000 parts available from stock for the best priceĪllesmarine offers you more than 40,000 watersports parts available from stock. When we are online you can find the chat function at the bottom right of your screen. Both private individuals and business clients can easily order parts online with us.Ĭan't find products or do you need advice? You can easily consult our specialists via our chat function. We are the platform for all your new outboard engine parts, new inboard engine parts and water sport accessories. With us you will find boat parts, engine parts and water sport accessories. ![]() Allesmarine your # 1 specialist in watersports articlesĪ is the online water sport store for all your water sport articles. ![]()
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