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Yamaha started development of the OX66 in 1984 [1] as a design concept for a lightweight and compact Formula Two engine with a wide power band.. At the time of development, both BMW and Honda provided engines for F2 (in the form of the M12/7 inline-four and the RA260E V6 respectively), but Honda's engine yielded superior results despite limited use.
The first known outboard motor was a small 11 pound (5 kg) electric unit designed around 1870 by Gustave Trouvé, [9] and patented in May 1880 (Patent N° 136,560). [10] Later about 25 petrol powered outboards may have been produced in 1896 by American Motors Co [9] —but neither of these two pioneering efforts appear to have had much impact.
The high bow provides buoyancy for retrieving heavy nets, and minimizes spray coming over the bow. The narrow beam allows the hull to be propelled by a modest outboard motor. [citation needed] The original Yamaha panga design had a length of 22 feet (6.7 m), and a waterline beam of approximately 5 feet 6 inches (1.7 m).
Another use of the V4 engine is in outboard motors for boats. The V4 configuration is popular for outboard marine applications due to its short engine length. In 1958, both Johnson and Evinrude introduced 70.7 cu in (1,159 cc) V4 outboards rated at 50 hp (37 kW) and weighing 200 lb (91 kg). [24]
The Yamaha V-Max, (or VMAX) is a cruiser motorcycle produced by Yamaha from 1985 through 2020. Known for its 70° V4 engine , shaft drive, and distinctive styling, the V-Max was discontinued following the 2020 model year.
Yamaha bucked this trend and continued to refine and sell two-strokes for the street into the 1980s. These bikes were performance oriented, water-cooled twin cylinder machines, designed to achieve excellent performance taking advantage of the lower weight of two strokes. The RZ-250 of 1980 [14] was the progenitor of this series.
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