I am spending the week end doing the final paint on the surfaces already covered. I was on a business trip for 4 days so I spent my evenings designing the revised wing. The new wing will be all wood. I have decided not to use the Graphlite rods and straps. I wanted to design a spar that could be assembled separately as a sub assembly, then bonded to a shear web. The problem I ran into is a lack of bond area on the inboard spar. The carbon picks up so much load that it becomes impossible to shear the running load out without interleaving shear ply's. I know I could built that type of design, but I think it is too complicated for the plans builder. I will continue to use them in my Landing gear, there is no issue with bond shear area there. Here are some images of the new spar root,the shear webs are removed for clarity. I have some more pictures on my Blog
http://robinultralight.blogspot.com/