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).
New marine engines from Waukesha, Red Wing, and Arnolt, with images and specifications.
| Identifier | ExFiles\Box 133\3\ scan0128 | |
| Date | 1st January 1940 guessed | |
| Waukesha Shows New Hesselman Type Engine The Waukesha Motor Company, of Waukesha, Wis., returned to the marine field in time to exhibit at the Motor Boat Show last year. This year its exhibit includes the Waukesha-Hesselman marine engines "Wanderer" and the "Defender," both of which were shown last year. The name Hesselman, as applied to engines, indicates the Hesselman principle of semi-Diesel construction, where fuel is injected solidly into the cylinders but is ignited by the use of spark plugs. In other words, a compromise between the gasoline type and full Diesel type of motor. The advantages claimed for his principle are the use of low cost, comparatively safe Diesel fuel oil, without the weight required for an engine of the full Diesel type. To a pinch, these engines will run on gasoline mixed with a little lubricating oil. The "Wanderer" is a 6-cylinder engine with a bore and stroke of 7" by 8½", and develops 215 hp. at 1050 r.p.m. It is equipped with Dynamic electric transmission, which permits a wide range of speeds, both forward and reverse, without mechanical friction clutches between the engine and the shaft. The Dynamic reverse gear operates on the induction motor principle, employing the magnetic fields of the electric motors to transmit power from crankshaft to propeller shaft. "Defender" is a smaller engine, also 6-cylinder, with a bore and stroke of 6¼" by 6½", developing 88 hp. at 1600 r.p.m. and equipped with Twin Disc reverse and reduction gears. The Red Wing "Meteor," a light weight 4-cylinder engine rated 7-18 hp. Bore is 2½" and stroke 3⅛". Its length is 27 5/8" and the weight, with iron base, 258 pounds. At the show, it is connected to the "Knee Action" drive. Another new model, the "Vigilant," is being announced at the Show, although it is not on display. Arnolt Shows Sea-Mite Engine Among the new exhibitors of small gasoline engines at the Show this year is the Arnolt Motor Company of Warsaw, Indiana. This company displays two models of its light and compact Sea-Mite engine which first appeared last spring. The 4-cylinder Sea-Mite weighs only 200 lbs. yet produces slightly over 20 hp. at 2800 r.p.m. It has a bore and stroke of 2½" by 3⅛" and a cylinder displacement of 61 cubic inches. The over all length is 29⅝" and the width between bolt centers is 16". Accessories are made by well-known manufacturers and include a 2-unit 6-volt electric system, built-in reverse gear, carburetor with approved type flame arrestor, electric fuel pump, water cooled combination manifold, bronze gear water pump, etc. The Sea-Mite, in direct drive, has been installed in several fast, small runabouts. With 2:1, 3:1 and 4:1 reduction gears, it, of course, gives shaft speeds of as little as 700 r.p.m. at full power. Its light weight and extreme compactness even in the high ratio reduction gear models makes the Sea-Mite an excellent engine for installation in small auxiliaries. The New England Marine Company's Adventurer, on display at the Show, has a Sea-Mite engine equipped with reduction gear. Image Captions: Right, the Arnolt Sea-Mite is a 4-cylinder engine weighing only 200 pounds but developing 20 hp. at 2800 r.p.m. Its piston displacement is 61 cubic inches. Built-in reverse gear is standard Below, the "Defender," a Hesselman cycle engine built by the Waukesha Motor Company. It is a 6-cylinder engine of 6¼" bore and 6½" stroke, developing 88 hp. at 1600 r.p.m. Twin Disc reverse and reduction gears | ||