Windtech Quarx
The Windtech Quarx is a Spanish single-place paraglider that was designed and produced by Windtech Parapentes of Gijón. It is now out of production. Design and development. The aircraft was designed as an advanced intermediate glider and was produced in two generations, the Quarx1 and Quarx2. The models are each named for their approximate wing area in square metres. The design was optimized for a wide speed range and was marketed to pilots "from the weekend recreational flyer to the competition pilot". The glider wing is made from Porcher Marine Skytex 44 g/m2 nylon fabric. The  rib reinforcements are 310 g/m2 Dacron, with the trailing edge reinforcement fabricated of 175 g/m2 polyester. The lines are all sheathed Kevlar and 1.1 and 1.7 mm in diameter or, optionally, 0.6 and 0.9 mm micro unsheathed lines. The risers are made from 20 mm wide Polyamida strapping. Reviewer Noel Bertrand noted in a 2003 review that the Quarx2 had been "very successful".