I was already very satisfied with the weight of the "WinDIY Wing Mark1". A little over 500 grams was less than I initially expected.

The whole construction consisted of four 15 cm long middle parts, an end cap and the base piece with which the wing was later to be connected to the hub. The whole is held together by two M3 threaded rods. The connection to the hub is made using a 10cm M6 screw.

This screw is part of which I am still not quite sure whether it is correctly dimensioned. Because it doesn't just have to endure the power of the wind from the front. In addition there is the centrifugal force due to the rotation. In addition, the angle of attack of the wing should also be adjustable via this screw.