Includes: Front Wing, Cover, Titanium Screw Pack F (M8x30mm) North Sonar SF-Series Front Wings Prone Surf / Surf / Downwind / Dock Start / Wing Surf North has engineered their Sonar Surf Series for super low stall speeds, effortless pumping and surf-style carving. Ideal for riders wanting more from surf and downwind swells (with or without a wing). The foils insensitivity to angle of attack change forgiveness means you don’t have to be an expert or have perfect pumping technique. A refined balance of roll stability and maneuverability that gives you confidence during pumping and take-offs, and the ability to initiate powerful rail-to-rail carves. Push it harder, lip stall and lay down banking turns, knowing tip ventilation is a thing of the past. Reduced distance between the mast and front wing makes for faster, tighter pivoting turns. North has kept the span similar between the three sizes, providing the same ride feel across the entire size range. The SF promises that frictionless sensation of glide at slower speeds. Responsive and agile. With intuitive recovery. Wakesurfing ten waves back, prone-surfing, wing-surfing, pumping or mastering the downwind. The Sonar SF Series. At one, with it all. Tech Features: Progress faster Effortless pumping Composed glide Responsive turning Match with S215 Stabilizer Materials Pre-Preg Carbon Titanium Screws Features Recommended with S215 Stabilizer Super low stall speed Effortless pumping Surf-style turning (smooth rail to rail and surf yaw snap) Forgiving and accessible for faster progression Progress faster. Moderate anhedral rondure combines with a gentle back-swept plan shape combine to create a good balance of roll stability, for confidence during pumping and take-offs, and maneuverability, for initiating turns with ease. Effortless pumping. To maintain an efficient window of operation at the lowest pumping speed, North needed to generate more lift out of the foil section. North always try to balance drag vs lift – so to find that compromise here, they've shifted the the peak in the lift-to-drag ratio to the lower end of the speed range. Having more profile thickness and curvature in the front section of the profile makes it less sensitive to angle of attack changes. At the opposite end the HA Wings have a flatter section at the front, which makes it more sensitive to angle of attack changes. They are high speed, but easier to stall. Composed glide. Responsive turning. Match with S215 Stabilizer.
