Manfred Weiss was a prominent industrialist in Hungary, manufacturing machinery, vehicles, armaments, and aircraft engines.

- Gnome-Rhone KJ-14 engines, manufactured under license with the designation WM K-14, are known to have been produced around 1935.

- This twin-row, 14-cylinder engine produced 900 hp at 2,400 rpm.

- An engine of this type is located at the Budapest Museum.

"Front view of a WM-14"

“Reduction gear of a WM-14”

The WM-14 engines were intended for the Reggiane aircraft of the Hungarian Air Force.

- However, earlier sport aircraft engines, such as the 120 hp Sport II, known as the "WM Sport II," were also produced.

-They were simple and lightweight inverted inline four-cylinder sport engines. Air-cooled.

“WM Sport II”

-From 1931 onwards, the Sport III was built, producing 130 hp at 2,300 rpm.

“Nice appearance of the Sport III”