Richard Neve 1 Posted June 22, 2013 Share Posted June 22, 2013 Hi Simon, What a brilliant model, well done Sir! I'm very interested in the wing construction you've used as I've been trying to form a wrap-around leading edge also in 3mm depron for a 1m symmetrical section wing and I cannot for the life of me get a smooth curve around the leading edge. I've tried pre-crushing the foam for about an inch either side of the le centre with a teaspoon so it bends rather than snaps but it doesn't bend evenly and I get random creases along the span. What is your secret please! Cheers, Richard Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted June 24, 2013 Author Share Posted June 24, 2013 Richard I have tried several method but eventually resorted to the simplest - a solid Depron leading edge sanded carefully to shape, just as you would on a balsa wing. This shows the Cessna wing built but without its leading edge. The LE consisted of two strips of 3mm Depron glued on and sanded to shape by 'eye' taking care not to damage the surface of the Depron sheet on the wing. After sanding the leading edge has very 'open' structure compared to the smooth skin of the Depron sheet so I use thick PVA glue carefully brushed onto the surface to fill the 'grain'. When hard just a light sand to smooth it down. On the very thin scale wing sections used on my EDF jets the leading edge is done exactly the same way but with a single strip of 2 or 3mm hard balsa to give a measure of 'ding' resistance! I hope this helps. Quote Link to comment Share on other sites More sharing options...
Richard Neve 1 Posted June 26, 2013 Share Posted June 26, 2013 Hi Simon, Thanks very much for that info, it definitely was very helpful and confirms that I haven't entirely lost the plot Cheers, Richard Quote Link to comment Share on other sites More sharing options...
Terry Warner Posted July 1, 2013 Share Posted July 1, 2013 HI Simon Great looking model, here is mine, 6 foot wingspan all balsa built from the Royal Plans, hope to get it in the air for its first filght this week or next weekend. It is also electric running on 2 Tunrigy G45's 3300 4 s. Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted July 1, 2013 Author Share Posted July 1, 2013 Terry Very nice but rather beyond my 'park flyer' field! Hope the maiden goes well. Quote Link to comment Share on other sites More sharing options...
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