THE Continental Aircraft Engine Company of Detroit, U.S.A., show their confidence in the future of a really “light” aeroplane in announcing a new engine of low power. The A.40 engine is a 4‐cylinder, L‐head, design of the horizontally‐opposed air‐cooled type. It has a 3?‐in. bore and 3¾‐in. stroke, with a piston displacement of 115 cu. in. It develops 35‐h.p. at 2,500 r.p.m., and 38‐h.p. at 2,800 r.p.m., the weight being 138 lb. with magneto and carburettor. The cylinders, of nickel iron, are cast in pairs, with integral cooling fins, provision being made for circulation of air around each barrel. The bores are ground to a mirror finish and held to close limits. Each cylinder block is attached to the crankcase by six studs and nuts.
(1931), "A Low Horse‐Power Engine: The Four‐Cylinder Horizontally‐opposed Continental Develops 35 h.p. at 2,500 r.p.m.", Aircraft Engineering and Aerospace Technology, Vol. 3 No. 4, pp. 99-99. https://doi.org/10.1108/eb029389
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