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Aviation History
1929
1929 - 0297.PDF
FEBRUARY 14, 1929 THE 240-H.P. WALTER-CASTOR AERO ENGINE A Czecho-Slovak Air-Cooled Radial THE well-known Czecho-Slovak Aero Engine firm of Walter A. Spol, of Prague—who have already produced several types (60 h.p., 85 h.p., 120 h.p.. 420 h.p. and 600 h.p.) of air- cooled radial engines for aircraft, recently added yet another model to their range. This new engine, one of medium Like previous Walter engines, this new model is an air- cooled radial, with seven cylinders, 135 mm. (5-3 in.) bore by 170 mm. (6-7 in.) stroke. The cylinders are made from the solid block of forged steel, with the cooling fins and bottom flange machined. The tops of the cylinders are also THE 240 H.P. WALTER-CASTOR ENGINE: Some constructional details showing the valve gear (left), auxiliary gears and crank-shaft assembly (right). power (i.e., 240 h.p.), was recently tested under the super- vision of a committee of Public Works, having successfully passed the tests according to the international rules of the C.I.N.A. We are able this week to give a brief description with illustrations of this engine. machined to receive the separate cylinder heads. It may be of interest to note that all the steels used in the construc- tion of Walter engines are made by the well-known Poldi Steel Foundries. The cylinder heads are of aluminium, thermically treated, THE 240 H.P. WALTER-CASTOR ENGINE : Three views of the new model recently added to the wide range (60 h.p.—600 h.p.) of air-cooled radial engines produced by the well-known Czecho-Slovak firm. 115 c 2
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