In 1912 came the first really successful Handley-Page monoplane, with 50 h.p. Gnome engine. The Short monoplane, was built generally on Bleriot lines. Its chassis was an original feature. The Coventry Ordnance biplane was a two-seater tractor built for the British Military Trials. It had a 100 h.p. 14-cylinder Gnome engine, with propeller geared down through a chain drive. The machine was an interesting experiment, but not an unqualified success. The Moreau "Aerostable," fitted with a 50 h.p. Gnome, was a French attempt to obtain automatic stability, but it only operated longitudinally. The pilot's nacelle was pivoted under the main planes, wires were attached to the control members so that the movements of the nacelle in its efforts to keep a level keel brought them into operation. The Mersey monoplane, an entrant for the British Military Trials, was designed to present a clear field of view and fire. The 45 h.p. Isaacson engine was connected by a shaft to a propeller mounted behind the nacelle on the top tail boom. It was a promising experiment, but came to grief. The Radley-Moorhouse monoplane was a sporting type machine on Bleriot lines, with 50 h.p. Gnome engine. It was notable for its streamlined body and disc wheels.