BMW X (engine)

The BMW X is a small five-cylinder radial engine for sport and training aircraft. Although this engine proved successful at several large-scale events in 1930, including that year's round-Europe flight, only a few were built.

The successor model to the BMW X five-cylinder radial engine, the BMW Xa, was introduced in 1931, with the swept volume increased from 2.2 L to 2.9 L. Power output went up from 50 to 68 hp. The Xa was also not built in any quantity and was mainly installed in training and sport aircraft.

Variants

 * X:Bore:83 mm, Stroke:80 mm
 * Xa:Bore:90 mm, Stroke:92.5 mm

Applications

 * BFW M.23
 * BFW M.31
 * Gerner G.IIR
 * Klemm L25