Thicker skin and spar cap added.

Skin switched into thicker and wing walk added..thicker spar cap. Also the spar web went through a major change. The wing walk also serves as a stiffener/reinforcement for the main wheel structure. I have a pretty good feeling about this now...it is 5600 grams...and only few kilos of structure only uncounted for. This could be the lightest ever motor plane detachable wheel + wing design. The 170 mm thick wing root and 1 metre wide and the planform is really paying off now as I expected as does the foam, thin plywood and carbon structure.