North SURF SF1230Sonar Front Wing

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 manoeuvrability, for initiating turns with ease.

Effortless pumping

To maintain an efficient window of operation at the lowest pumping speed, we needed to generate more lift out of the foil section. We always try to balance drag vs lift – so to find that compromise here, we 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 a Surf or Glide Series Stabilizer

With smaller front wings, you want to upgrade to a smaller stab, but it’s important to match the stall speed. Advanced riders who are seeking a looser feel may choose to remove the wingtips on the S215, using the dashed guideline graphic, to create a completely flat stabilizer with a 205cm2 area.