A-7-R is 7-cylinder, static, radial, air-cooled engine developing 150 hp. at 1800 r.p.m.; compensating rocker boxes maintain given tappet clearances regardless of temperature; cam rollers installed in roller arms to eliminate side thrust; push-rod housings and other accessories mounted on rear of engine to reduce wind resistance; weights 430 lb. without propeller hub; 4 1/2-in. bore and 5 1/2-in. stroke with 612.15 cu. in. displacement; 8.6 gal. gasoline and .35 gal. oil per hour. (see also Aero Digest, vol. 12, no. 3, Mar. 1928, p. 382, 1 fig.; and West. Flying, vol. 4, no. 3, Mar. 1928, pp. 32 and 93, 1 fig.)
The Floco aviation engine
Aviation
Aviation ; 24 , n 10
1928
2 pages
3 Figs.
Article (Journal)
English
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