These photos were kindly provided by Knut Erik Hagen. The photos were taken in Feb 2003 at the Royal Army and Military History Museum (Musée Royal de l'Armée et d'Histoire Militaire / Koninklijk Museum van het Leger en de Krijgsgeschiedenis) in Brussels , Belgium.
This is the HF.20 in the Musée de l'Air, le Bourget.
The pictures were taken in "Le musée du Bourget" the 11th of february 2004, with Shane Weier.
This plane is an original one, restored in 1956. It is powered by a Gnome engine 80hp.
The full set of Eric's photos is available as a zip file.
"As F.7 but booms and control horns are painted metal, not wood. Elevator control quadrant black metal - paint? Note elevator and rudder control wires led to center-rear interplane strut where pulleys convey them to the control horns. Throttle handle (or spark advance?) natural brass. Gas tank copper. Note interior painted white or pale gray. Undersurface of nacelle is clear fabric, attached to side walls with grommets over studs. Fabric portion of nacelle lashed to tubular framework at rear."
Len Smith adds:
"The Longhorn can never be called pretty, but it was useful. An overall look, a view of the rear of the nacelle and a close up of the engine."
These photos were taken by Mike Muth in August, 2000.