My ignorance at the design phase many years ago has not produced a lighter aluminum wing than the original wood wing. Perhaps a professional stress man could have done it....The original wing was 75-80 lb....Mine will be at least 140 lb. I will let you know when I finish the fix I am working on. ....I think my concept is valid,....But perhaps would need to have the web designed with holes, cap strips without bolted splices, and maybe a fabric leading edge instead of the aluminum..... probably drag-anti drag structure or some other replacement instead of a aluminum leading edge D tube.I've also been following the guy building the 'Aluminium Dragon', with a view of building a better (and maybe lighter) wing
I really liked your design.....perhaps just need to get a better controller.....there has been lots of improvement over the years.