It has been over 40 years since I last scratch built a plane and then it was balsa and tissue, and it crashed… So this time not wanting to make life easy, I printed a A4 version of a foam plane, scaled the general proportions and used a flight test method of construction. The general specification:
Wing span: 840mm
Target weight: 1400gm
Wing area circa: 35dm2
Motor: 3536/1100/7 – 470watts
To give you an idea of the current build state, I have (I think) attached a couple of photos. During the ongoing build, I will provide updates, but do not intend to maiden it until the weather is better and I have mastered the RIOT!!!
Hi all, now for a quick update; as can be seen from the pictures, the BiPlane is basically finished, however I do want to replace the wheels as I’m not happy with the current foam board version. I am trying a bit of an experiment with the sprung under carriage to help with landings on rougher ground (not that I would miss the landing strip).
At the start of this project, I had some target design figures with the key target being weight which has come in at 1.29kg fully loaded with battery. The result of this shows in its ability to not only lift itself vertically, but also pulls my arm up… All we need now is better weather so I can practice with the Riot before risking this plane.
OK… The first maiden flight lasted a couple of seconds… the last maiden flight was a few seconds longer as shown in this clip
All is not lost, the parts have evolved into the FlighTest Spitfire, a little over powered, but still within the FT design weight at 830 grams including battery