J.Herris Otto, AGO and BFW Aircraft of WWI (A Centennial Perspective on Great War Airplanes 37)
In 1913 the AGO company produced a single prototype of a so-called Kalvalleris monoplane, or cavalry airplane. It was a pre-war concept; that is, it was a small, unarmed two-seater intended for fast, visual reconnaissance. Company designation E.I was given; no military serial was assigned and it was not formally an E-type.
The E.I was powered by a 120 hp Daimler D.I engine. The aircraft had a primitive brow radiator and a modest top speed of 135 km/h despite the fairly powerful engine. The aircraft was given Ago number 20 on the rudder but no fixed fin was fitted. No production ensured.
Flight, August 21, 1914.
AIRCRAFT "MADE IN GERMANY"
WHICH MAY BE EMPLOYED AGAINST THE ALLIES.
2. The Ago Racing Monoplane
is in some respects reminiscent of the Morane. It is - which is unusual for a German machine - a single-seater but otherwise incorporates many of the features of the biplane. The rectangular section fuselage tapers to a horizontal knife edge at the rear and runs to a point in the nose of the machine where is accommodated the engine - a 150 h.p. Argus. As frequently seen on modern German aeroplanes, the radiator is mounted above the engine. The chassis is of a very simple form and consists essentially of two pairs of tubes bent in the form of a U from which is slung the tubular axle. Wing warping is employed for lateral control, the warp cables being taken to a lower pylon of steel tubes whilst the upper bracing cables are secured to the top of a similar pylon resting on the upper longerons of the fuselage.