Hanriot HD-1. Radio control scale model.
Quote: "Hanriot HD1. Famous French WWI biplane design developed into a fine flying model by Bob Wright. 56 in winhgspan, one sixth scale model for 25 to 40 engines and two to four function radio.
Rene Hanriot and Emil Dupont were responsible for this lovely little rotary powered fighter which first appeared in the summer of 1916. Eventually it found its way into the Belgian and Italian Air Forces and a small number went to America where they were modified and served with the US Navy. These latter were designated HD-2 but as far as I can see the only visible difference to the HD1 was an enlarged rudder and fin. Of the many colour schemes the US Navy seemed the simplest, so I covered the model in silver Polytex and only had to paint wing insignia rudder stripes and fuselage numbers.
Over the years I have had success in scale model flying by following my motto of: built light and trim for free flight. Of course it follows that to achieve the 'light' part, one uses the minimum of radio gear, a modest engine and as little paint as possible. My Hanriot, to 2in. scale, weighs just 3 lb 12 oz ready for takeoff and this gives a realistic flying speed. The engine is an Irvine 25 Blackhead with 'dustbin' type silencer which fits into the Flair cowling well.
The model is of simple construction. The drawing and the various notes on it should enable the modeller to produce an interesting and good looking 'sports scale' model. However, a few additional notes may be helpful.
Cut out the pair of 1/4 in sheet sides which form the front fuselage and also the associated formers. Drill all the necessary holes for engine mount, fuel lines and so on. Don't forget to cut the grooves into which the centre section wires fit. Put these parts together and glue up checking all is square. Make up a pair of rear fuselage frames and carefully mate them to the front fuselage 'box.'
Now you have something to look at and if it is all square you will be encouraged to go on to the next stage. It is best now to do all the wire cutting and bending..."
Hanriot HD-1, RCM&E, January 1990.
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