The only side by side fully aerobatic (+6, -4)Biplane! Carries 40 gallons and 80 lbs of baggage.The fuselage creates 20% of the lift. Ailerons all droop as flaps (flaperons). New wings in 2006. Enlarged the ailerons (40%)and the rudder (50%). I also own the (SNS 7) design.I recently entered into an agreement to sell the SNS-7 design to Ron Jones of Thunderbird Av. He already owns the ultra-light SNS-8 and 9 designs.