here some infos which I got from Manfred yesterday:

surface area (SA), projected area (PA), wing span (WS), aspect ratio (AR), weight in kg (W)


7.0 - 7.12 SA - 4.54 PA - 6.44 WS - 5.42 AR - 1.85

9.0 - 9.1 SA - 5.74 PA - 7.24 WS - 5.55 AR - 2.34

12.0 - 12.25 SA - 7.79 PA - 8.43 WS - 5.83 AR - 3.17

15.0 - 15.25 SA - 9.73 PA - 9.42 WS - 5.83 AR - 3.96


Sail material:
Dacron Polyester 170 g/m², Chikara 41 g/m²

Bladder material:
Polyurethane / Polyether film