Thank you again for your nice
I ended the downside rigging who was colled fly rings (haubans de vol).they kept the wings in the air. The upside rings were called landing ring (haubans d'atterrissage) and the kept the wing in the ground, as Sodium explain me.
the ring size were 5mm , and was thinner upside.
I used 0,1mm nylon fishline, adn I will use 0,008mm in upside.
Well here are the pictures:



Xan