We've had several threads on the subject of designing and building an ultralight but nothing has ever come of them. I believe the main reason for those failures was due to an unstructured approach and too many people going off at tangents. What I have done here, is put forward a project, which may or may not be viable, but one to which anyone can have an input. Now, before you all go off with negative comments, let me say that this model is a design concept only, nothing is to scale. The model is incomplete for simplicity at this stage. Besides which, I'm only just coming to grips with GoogleSketchup (a free download if you want it) There are a few rules, love them or hate them but they're set in concrete. 1. This project it to be treated with respect at all times. 2. The aim is to, hopefully, produce a single seat aircraft that has appeal to the adventurous and perhaps younger flyers amongst us. A plane that is different from the rest. 3. Only a few hand tools and no specialist skills needed to assemble the final design. 4. Whilest cost is to be kept to a minimum, the engine, drive train and prop will always be the most expensive part of any build. To this end, only aircooled, auto, motorbike or aircraft engines are to be considered (80hp max). The availability of same being dependent on the builders powers of discovery. (The Prop housing and bearings are a specialized piece of engineering but need'nt be overly expensive if designed properly). I hope. Now, my preferred build method would be all Alloy tube, square and round, with plywood/foam sandwich ribs, plywood leading edge and rag skins. No welding Wing construction would be two tubes, leading edge and main spar with a full length aileron mounting spar and a suitable trailing edge. Foam sandwich ribs epoxied onto all spars and ply caps and bottoms to match leading edge thickness. I've chosen this method as, apart from being relatively easy, it will be quick enough to build and interest maintained. The plywood leading edge would provide additional stiffness and prevent the scalloping effect as seen on Thrusters etc. Now I realize some of you might think that I'm just after some free engineering advice, and you'd be right. I want to see my dream come to fulfillment. But at the same time, I want to give the same to any members of these forums who would like to share that dream. So, who's gunna start the ball rolling?