The Alfa Romeo 115 is an Italian six-cylinder air-cooled inverted inline engine for aircraft use, mainly for training and light planes, based on the de Havilland Gipsy Six engine.

Derivatives of the 115 include the -1, bis, ter and Alfa Romeo 116.

[1] The Alfa Romeo 115 series of engines closely follows the original de Havilland Gipsy Six engines in having one-piece Elektron casting crankcases with cover plates, steel cylinders, finned for cooling, and detachable aluminium alloy cylinder heads.

The six-throw one-piece counterbalanced crankshaft is carried in seven plain journal bearings and the propeller is driven directly by the crankshaft.

Data from Jane's All The World's Aircraft 1938,[2] Italian Civil and Military aircraft 1930–1945,[1] and Aircraft Engines of the World 1945 [4] Comparable engines Related lists