One more step forward: one piece carbon D-box is
used in this construction. It changes the understanding of stabilizer’s
strength and weight ratio. Carbon strips lay over the ribs, trailing edge
and fit into the D-box. Completely crash-proof, covered with metallic
mylar it weights only 7-8g! 2 types offered: 4.5sqdm (fits WH 2100 wings),
4.0sqdm (for 2220, 2320) of area.