From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Page from a publication detailing various marine engines and their specifications from the 1940 show.
| Identifier | ExFiles\Box 133\3\ scan0123 | |
| Date | 1st January 1940 | |
| hibit, is a single-cylinder 3 1/8" bore by 3 3/4" stroke marine auxiliary unit rated to develop 5 hp. at 1800 r.p.m., direct-connected with a 125-volt 3 kw. electric generator. A 3-cylinder, 9 kw., 125-volt d.c. generator unit completes the display. Model MC 250 hp. Speedway The Consolidated Shipbuilding Corp., of Morris Heights, N. Y., is showing, along with its display of boat models and yacht designs, one of its Model MC 250 hp. Speedway engines. It is the company's thirty-fifth consecutive appearance at New York Motor Boat Shows and, in its booth on the mezzanine floor, officers and representatives will gather to meet the ever-growing Consolidated family. The Model MC Speedway is a 6-cylinder engine of 5 3/4" by 7" bore and stroke, turning at 1700 r.p.m., designed for fast commuters and cruisers and, for twin-screw service, is furnished in matched pairs — true right- and left-hand engines with carburetors inboard and exhaust manifolds outboard. The design is based on thirty years of marine engine building and embodies all the improvements brought out over this period of time. The cylinders of this L-head engine are cast in pairs of a special grade of iron, carefully bored and ground to size. Regular equipment includes two carburetors with flame arresters, starter, generator, voltage regulator, two single spark distributors, and all accessories essential to high-class service and economical operation. The clutch and reverse gear of this model is of the most modern design to enable the propeller to turn at 100 per cent engine speed when in reverse. The unit is mounted at the after end of the one-piece bed and is covered with an oiltight housing. The reverse drives through clutches and the self-locking cone clutch at the forward end locks tightly to the crankshaft, thus dampening out unnecessary noise and backlash. The 2-cylinder Gray Diesel is displayed for the first time at the 1940 Show. It develops 55 hp. at 2000 r.p.m. This is a 2-cycle engine of 142 cubic inches piston displacement. The Gray Light Four gasoline engine develops 16 hp. at 1800 r.p.m. Its weight is 335 pounds and its over-all length is just over 30''. Lite starting motor, with Bendix drive, is attached by a bracket to the crank-case. A steel ring gear is provided on the flywheel for Bendix engagement and both gears are covered by a guard for protection. An 8 3/4 to 10 3/4 ampere generator can be supplied to be driven by a V-belt and mounted on a special bracket. Another new feature of the Lauson line is a new inexpensive reverse and reduction gear of 2:1 ratio. This gear is available on all Lauson engines of 3 hp. and over. The smaller engines utilize the Lauson belt-driven reverse and reduction gears. The new Lauson 4-cycle outboard motor is air-cooled and is equipped with an underwater exhaust. The advantages of 4-cycle design, easy starting, great fuel economy and slow trolling speed, which have contributed so much to the popularity of the Lauson inboards, are claimed for these outboards as well. Lauson's Small Engines The Lauson Company, of New Holstein, Wis., is again showing its complete line of 4-cycle inboard motors, ranging from 3/4 to 5 1/2 hp. in air- and water-cooled models. In addition, there is a recently developed outboard motor, one of the first applications of the 4-cycle principle to this field. The little Lauson engines have been popular as power plants for skiffs, sail boats, small auxiliaries and the smaller utilities and runabouts. The featured engine at this year's Show is the 3.7 hp. air-cooled model LF. This engine is now available with electric starting and generating equipment. An Electric Auto- Wisconsin Shows New Model Again occupying space in Block Q, on the second floor, the Wisconsin Motor Corp., of Milwaukee, is exhibiting seven models of air-cooled engines, including the new Model AKM, 2 7/8" by 2 3/4" 4.2 hp. single-cylinder engine which weighs only 75 pounds with accessories. Another new and important Wisconsin development is the reduction-reverse gear unit which is entirely enclosed, running in oil, and which has a 2:1 ratio. Other models include three of the single-cylinder 3 hp. ABM, one of them shown with standard take-off shaft, one with the Wisconsin reverse-reduction assembly, and the third cut away to show the internal mechanism of both the engine and the reduction gear. Models AEM and AHM, both fitted with the new reduction gear unit, This Speedway engine, exhibited by Consolidated Shipbuilding Corporation, develops its full rated power of 250 hp. at 1800 r.p.m. It is 5 3/4" bore and 7" stroke. | ||