Airplane Engine Encyclopedia
Trebert
The Trebert Engine Works constructed two types of airplane engines about 1912.
The air-cooled rotary type, rated at 60 h.p., had six cylinders arranged with axes parallel to the central shaft. The bore was 3.75 in., the stroke 4.25 in., and the total displacement 281.64 cu. in. The propeller speed was reduced one-half by small bevel gears at the inner end of each shaft meshing with a large central gear.
The cylinders wre of cast-iron construction and employed rotary type valves. A Panhard carburetor supplied the mixture, and Mea magnetos the ignition. The weight (completely equipped) was said to be 230 lbs., or 3.83 lbs. Per rated h.p. The overall length was 22 in., and the outside diameter 15.5 in.
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An eight-cylinder water cooled Vee type engine of 4.875 in. bore, 5 in. stroke and 746.6 cu. in total displacement, was rated at 100 h.p. at 1200 r.p.m. One of the outstanding features of this engine was the piston valve design. The "L" head cylinders with integral water jackets were made from cast iron. The crankshaft was supported in five bearings, and the articulated type connecting rods employed "H" sections. The pistons were made from cast iron and fitted with three rings.
Panhard carburetors supplied the mixture, and Mea magnetos the ingnition. A splash system of lubrication was employed, the valves being lubricated by introducing oil into the fuel. The weight was said to be 350 lbs, or 3.5 lbs . per rated h.p, The overall dimensions were as follows: length 48 in., width 26.5 in., and height 30 in.
The preceding information is from the "Airplane Engine Encyclopedia" by Glenn D. Angle, published in 1921. Mr. Angle was in chrage of the design of airplane engines for the United States Air Service.