DUOTONE Windsurf sail Warp_Foil 2022
- Sizes: 4.5 / 5.2 / 5.9 / 6.9 / 7.9 / 8.9 / 9.9
- Discipline: Foil racing
The WARP_FOIL extends Duotone's PWA slalom champion fin sail range. It’s a specific and highly advanced foil design suited for foil racers looking for something that complements the low-drag of the hydrofoil.
Compared to traditional fin sailing you have approximately 70% lower drag on the foil. Duotone was the first brand to understand that it requires a totally different sail design (profile, twist pattern, aspect ratio) to match the low-drag hydrofoils.
The balance between control and performance/speed over a maximum wind range is what counts for winning races. It’s a value that cannot be ignored. With the WARP_FOIL designers have succeeded in delivering the most powerful, super stable and fast foil racing sail with a huge wind range that can be ridden on the water with a hydrofoil.
The 20.22 lineup consists of the following sail size:
- 9.9: Course Race specific design for up- and downwind courses
- 8.9 & 7.9: Designed for both Slalom and Course Race formats
- 6.9 & 5.9: Slalom specific designs
- 5.2 & 4.5: Speed-Slalom specific designs
The team around chief sail designer Kai Hopf, chief tester Marco Lang and PWA vice world champion Pierre Mortefon have set to develop the 4th generation of the WARP_FOIL. The previous model has proved to be the most successful and competitive foil racing sail during the 2021 PWA season with Marion Mortefon winning the women foil word title and Pierre Mortefon and William Huppert ending up in 2nd and 3rd.
The WARP_FOIL 20.22 is based on the same design principles and features incorporating the latest developments in foil racing.
Since foil slalom has shown to be competitive to the fin even in high wind conditions we have extended the range toward Slalom-Speed by adding the sizes 5.9, 5.2 and 4.5 to the range. Especially the 5.2 and 4.5 have a more compact outline improving the high end control.
On the other side of the range the 9.9 got completely reworked now featuring an 8-batten layout. This has a tremendous effect on the control and wind range of this size as this is one of the essential factors for the Course Racing format.
All sizes are now equipped with an XPly top panel. The slightly more elastic XPly improves control in high winds and keeps the leech stable.
To accommodate the increased area on the big sizes 7.9, 8.9 and 9.9 here even the two top panels are made out of XPly. This stabilizes the top and prevents the leading edge from vibrating.
Another major improvement to enhance control is the reduced profile at batten 6 which moves the main power to the center.
In our eyes, the WARP_FOIL 20.22 redefines the benchmark of control : performance : wind-range ratio. It’s purely designed to win low-drag hydrofoil races!
Attention: for maximum performance the WARP_FOIL is equipped with 4 carbon tube battens. These battens are stiffer but unfortunately also more fragile than glass tube battens. Therefore, they are excluded from our warranty!
- REDUCED TOP ROACH - REDUCED HEAD AREA INCREASES STABILITY AND CONTROL AS IT REDUCES THE MOVEMENT OF THE UPPER SAIL TO CORRESPOND TO THE LOWER DRAG OF THE FOIL
- REDUCED LOOSE LEECH - REDUCED LOOSE LEECH TO CORRESPOND TO THE LOWER DRAG OF THE FOIL
- REDUCED WEIGHT - REDUCED WEIGHT DUE TO MINI PROTECTOR AND SUPER LIGHT IROCKET 2.0 BATTEN TENSIONER.
- IROCKET 2.0 - FACTORY CALIBRATED INDIVIDUAL BATTEN TENSIONS USING A TORQUE WRENCH
- HYPER CAM 2.0 - COMPLETELY NEW AND TECHNICALLY SUPERIOR: THE CAMBER REVOLUTION WITH ADJUSTABLE LENGTH - FOR OPTIMISED ROTATION AND INCREASED PERFORMANCE
3D TOP CAP
Optimised pull. On regular top caps and pin systems the webbing is connected in a “one-dimensional” way with the sail body (either side to side or front to back), which transfers the downhaul tension only in certain points. The 3D TOP CAP allows a “three-dimensional” and very widespread transition of the downhaul forces into the sail body. This eliminates top fluttering and ensures a progressive loose leech extending the wind range. The integrated abrasion ribs eliminate the need for heavy, bulky reinforcements at the end of the luff sleeve.
Improved sail control at higher winds. Designer Kai Hopf originally designed the TT TOP for the WARP. The reduced, concave shape improves tension conditions for a more effective, three-dimensional top twist. This means the top twists not only horizontally, but also vertically under strong winds. By completely neutralising gusts of wind, the rig is kept steady in the rider’s hands, and thus works in a much larger range of winds.
POLYESTER WEBBING ONLY
Eliminating stretch and loss of tension. If it’s good enough for safety harnesses, it’s good enough for windsurfers! Duotone is the only manufacturer to use only polyester webbing for the (vario) top and the tack roller. This advantage of this compared to conventional polypropylene is the negligible amount of stretch. As a result even brand new sails will retain full luff tension and will not need subsequent trimming.
Super-lightweight and aerodynamic.
An inconspicuous detail with a massive impact. iROCKET 2.0 batten tensioners are super-lightweight, aerodynamic and highly stable, consisting of high-quality components such as a self-lubricating, salt-water-resistant brass nut with stainless-steel screw which can withstand all batten tensions. Furthermore, the iROCKET 2.0 is an essential component for a true windsurfing revolution.
100% correct batten tension, correctly adjusted when purchased and forever after. Duotone calibrates each individual batten at the factory according to development specifications. And they don’t just leave it up to blind intuition either – all battens are adjusted to 100% accuracy using torque wrenches. Duotone also applies soluble screw adhesive to the locknuts so that the tension cannot be altered. This means that the batten tension remains absolutely correct and will never have to be adjusted again. The batten key included with the sail is therefore only needed for fine tuning or in the unlikely event of a batten breakage.
These prevent unwanted leech flutter. Short and highly effective mini-battens which provide support for the areas between the battens and prevent undesirable flutter.
HYPER CAM 2.0
Optimum performance and camber rotation at any time! HYPER CAM 2.0 is the camber revolution for even more sail performance. The secret is a variable slider which gets adjusted via a Torx stainless steel screw, determing the camber length (patent pending). Further extended results in maximum propulsion, slightly shortened optimizes the rotation. The difference is clearly noticeable and has a great influence on the performance level of the sail. The camber length can be changed by anyone within seconds and adjusted to his preferences, even under full sail tension. Despite this unique additional function, the HYPER CAM 2.0 is only slightly heavier since the housing is weight-optimized.
But it offers even more:
- Super-fast rigging up (only rolling on instead of snapping on) without having to correct luff and outhaul tension multiple times.
- Minimal friction and very gentle batten rotation, since the HYPER CAM has exposed pulleys without plastic braces and only the pulleys touch the mast.
- Optimised shape for the best possible luff sleeve profile and ideal aerodynamics.
- Suitable for all mast diameters because only the pulleys touch the surface and never the plastic structures themselves, allowing the HYPER CAM to rotate with extreme ease.
- Fast and easy length adjustment for individual tuning of max. performance vs. ease of rotation.
DOUBLE SEAM TECHNOLOGY
Double the durability with half as much stretch. DUOTONE manufactures products of unmatched quality which gives their sails a significantly longer lifetime. A key feature which helps to achieve this is the triple-stitch zig-zag seams. Unlike other products with their single-seam design, these are double-seam. They cover all exposed crash areas, which increases tear resistance and reduces bending-elongation by up to 50%, boosting profile stability and performance.
MAST SLEEVE OPENER
Frictionless insertion of the mast into the luff sleeve. An ingenious solution does away with the tedium of inserting the mast. The DUOTONE logo above the boom cutout gently opens the sleeve so that the mast can be threaded with one hand into the luff friction-free, without having to constantly make adjustments to the luff.
INDIVIDUAL BOOM LENGTH INDICATION
The correct boom length without the need for trial and error. Because the boom is attached to the mast at different heights depending on body size, and because this creates a different angle to the mast, the boom length will vary. Specific recommendations for the correct length are printed directly on the luff sleeve at the boom level.
TWIN TRIM CLEW
Wider range of use, custom tuning options. The secret of the TWIN TRIM CLEW is the two horizontally placed clew eyelets. The outer eyelet position provides more power and a more direct feeling, while the inner position gives more control and a gentler riding feel.
HTS 2.0 HARNESSLINE TRIM SYSTEM
Never position your harness lines incorrectly again. Do away with the tedium of adjusting to the optimum rope position, as well as the numb forearms and the endless fiddling around. The patented print on the sail shows exactly where the centre of the harness line has to be. All you need to do is position the two ends symmetrically at the left and right of the print.
The lightest protector on the market, with integrated trim indicator.
TACK ROLLER 2.0
During the development of the TACK ROLLER 2.0 Duotone's designers have measured the downhaul forces on all kind of sails. They've found out these interesting facts:
- When downhauling a cambered slalom sail the forces necessary are nearly 3 times as high as when downhauling a no-cam (wave) sail (160 kg vs. 60kg)
- With a 6:1 power-ratio you need to pull twice as much rope-length as with a 4:1 ratio. Therefore, with a 4:1 ratio you can downhaul the sail in one go, whereas with a 6:1 ratio you always need to retighten the rope.
- Threading the rope through all rollers (without the rope getting crossed) takes at least 4 times as long as just looping the rope.
- In theory with a 6:1 power-ratio the downhaul forces should only be half as high compared to a 4:1 ratio. In real life though the friction loss at each roller reduces the downhaul tension by only 15% at most (wave sail: 57 kg vs. 60 kg / slalom camber sail: 135 kg vs. 160 kg).
Therefore, they've designed 2 versions of the TACK ROLLER 2.0:
>> NOCAM Version used on all no-cam sails
The massive comfort and speed advantages of the 4:1 ratio (Loop-Loop-Go) outweigh the very slightly reduced downhaul forces of the 6:1 ratio.
This version features 2 nickel plated brass rollers at the outside plus a center spacer featuring a bigger diameter. This ensures that the rope loop automatically slips into the 2 outside rollers.
>> CAM Version used on all cambered sails The downhaul forces are so massive that even a small reduction helps. The 3rd slightly bigger roller allows to either use the 4:1 (Loop-Loop) or the 6:1 (Thread-Through) option.
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