The ORLO Motor Co. of Rochester, N. Y., built three water cooled engines during 1916.
B-4. The Model B-4 Orlo engine was a four-cylinder vertical type, rated 50 h.p. at 1300 r.p.m. The bore was 4.5 in., the stroke 6 in., and the total displacement 381.69 cu. in. The cylinders were cast separately and employed overhead valves. Dual ignition was provided, and a Schebler carburetor furnished the mixture. The bare weight of the engine was reported as 220 lbs., or 4.4 lbs. per rated h.p.
B-6. The Orlo Model B-6 was rated 75 h.p. at 1300 r.p.m. The cylinders were identical to those of the B-4 type, hence the total displacement was 572.54 cu. in. The weight of the bare engine was said to be 270 lbs., or 3.6 lbs. per rated h.p.
B-8. An eight-cylinder 90 degree Vee type engine, known as the Model B-8, was rated 100 h.p. at 1300 r.p.m. This engine employed the same cylinders as the B-4 and B-6 models, the total displacement being 763.37 cu. in. The bare weight was reported to be 480 lbs., or 4.8 lbs. per rated h.p.
100 h.p. 8 Cylinder Orlo B-8 Motor
References
- Rochester City Directories, 1916-1918
- Monroe County Clerks Office Electronic Index
- Airplane Engine Encyclopedia, P. 371; by Glenn D. Engle; Pub. 1921 (Mr. Angle was in charge of the design of airplane engines for the United States Air Service.
