THE FIRST SAIL FULLY DEDICATED FOR SMALLER FRAME RIPPER.
CONVEX DACRON LUFF-PANELSTRAIGHTER LUFF CURVE, 3-BATTEN-LAYOUT AND OUR CONVEX DACRON LUFF-PANEL ALL RESULT IN A SOFTER SAIL IDEAL FOR LIGHTER RIDERS
SUPER LIGHTWEIGHT3-BATTEN-LAYOUT, LIGHT PROTECTOR, EYELET INSTEAD OF TACK ROLLER AND OUR WEIGHT OPTIMIZED PANEL-LAYOUT ALL RESULT IN A SUPER LIGHTWEIGHT IDEAL FOR SMALLER-FRAME RIDERS
VTS 2.0OPTIONAL QUICK RIGGING PATCH ALLOWS «TO THE SPOT» TRIMMING WITHOUT EVEN LOOKING TO THE TOP (PATENT PENDING)
HOLLOW LOWER LEECHHOLLOW LOWER LEECH (SCOOPED LEECH OUTLINE) STABILISES THE PROFILE RIGHT ABOVE THE BOOM AND PREVENTS LEECH FLUTTERING
XPLY PLUSLAMINATE (100/150 MICRON) WITH THE LOWEST STRETCH AND BEST UV- AND PUNCTURE RESISTANCE ON THE MARKET
TRI PLYTRI PLY FOOT PANEL (150 MICRON): ADDITIONAL 3RD THREAD DIRECTION INCREASES RIP-STOP ABILITY BY 30%
EPOXY BATTENSUNBREAKABLE EPOXY BATTENS
IROCKET 2.0FACTORY CALIBRATED INDIVIDUAL BATTEN TENSIONS USING A TORQUE WRENCH
A familiar concept – unique execution. Women, young rippers and smaller riders up to 160 cm in height often struggle with regular sails because of their stature, strength and limited lever forces. At the same time they are often more talented surfers than others, so they are right to demand a full-featured and easy-to-control rig. For these individuals we have specifically developed the NOW – a highly lightweight, powerful and high-quality performance handling sail developed based on the current SUPER HERO model yet adapted so it can be used by smaller/lighter riders with ease. While most sail brands use the same layouts and materials for grom and women sails as in their adult-sized sails for reasons of simplicity (e.g. the heavy X.PLY), we do things differently. Thanks to the years of collaboration with all the big windsurfing schools (e.g. VDWS, ION Club, FBC), we have taken advantage of their wealth of knowledge to design the NOW. The magnificently balanced shape, lightweight monofilm and sophisticated mix of materials in the iMODULAR DESIGN guarantee low weight AND durability.
SAIL MAST COMPATIBILITY
WANNA KNOW HOW OTHER BRANDS MASTS WORK WITH DUOTONE SAILS?
BOOM MAX (CM)
LUFF MAX (CM)
MAST TYPE (BEST/ALT.)
MAST GEO (BEST/ALT.)
MAST LENGTH (BEST/ALT.)
DUOTONE DESIGN PHILOSOPHIES
With the information overkill nowadays no one has the time to read manuals anymore. Therefore we try hard to design our products as intuitive as possilbe to get you onto the water faster than with any other product. No wonder DUOTONE is called the feature world champ.
Here are some examples:
- VTS 2.0
The first «guess-free» visual trimming guide to clearly show the correct downhaul tension. Version 2.0 comes with a window in the protector to mark your individual trim once you have found your ideal setting.
- HTS 2.0
By marking the draft position on the sail you immediately know where to position your harness lines.
- INDIVIDUAL BOOM LENGTH INDICATION
The length of the boom changes with the angle to the mast. Therefore if you move your boom up or down you need to change the length of your boom. As the only brand we take that in consideration by printing 3 different boom lengths onto the clew and boom cutout so that you always know the correct length according to your body/boom height.
- SET&GO VARIO-TOP
Instead of leaving you with the time-consuming try and error procedure to find the correct setting we have installed markings on the webbing immediately showing the correct setting.
- iROCKET 2.0
Every batten in a sail requires a different tension. That’s why as the only brand we calibrate every single batten at the factory to the correct individual tension using a torque wrench. Since the screws are locked with screw glue you never have to touch them. Just rest asured to always have prefect batten tensions.
Our motto is clear: light is right but only if it doesn’t go to costs of durability.
Our hardware products (booms, masts and extensions) are proven to be the lightest in the industry.
With our sails though we are not the lightest on the market (with the exception of the Super Hero M.Plus). The major reason for this is that we are using (much) thicker XPly laminates than some other brands.
The factors of puncture resistance, UV weathering resistance and stretch evidently depend ONLY on the thickness of the film used.
Puncture resistance and stretch have a linear relation to the thickness of the film. Means twice the thickness results in twice the strength against punctures with half the stretch.
Even more critical is UV resistance since here the relation to the thickness is overproportional. Means half the thickness reduces the UV-longevity by nearly 70%!
Some brands use XPly laminates which are 2/3rd thinner than ours in the upper sail area. Yes in the top you have less puncture issues and you can even get away with the increased strech. Unfortunately though the UV-exposure is the same all over the entire sail.
That’s one of the reasons why the majority of Windsurf centres around the globe trust in DUOTONE products.
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. We calibrate each individual batten at the factory according to development specifications. And we don’t just leave it up to blind intuition either – all battens are adjusted to 100% accuracy using torque wrenches. We also apply 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.
DESIGN PHYSICS OF MODERN WINDSURF SAILS
Especially in the top and towards the clew weight is key cause due to the leverage-effect you feel every gram a multiple times in your hands. Because of the quite limited amount of materials available though the only way to reduce the sail weight is by reducing the thickness of the materials. The secret is finding the sweet spot of lowest possible weight but without sacrificing durability and longevity/sustainability.
Modern Windsurf sails consist of the following raw materials:
(1) MAST SLEEVE MATERIAL
Rough woven Polyester fabric. The rough structure gives it a maximum abrasion resistance against impact from the outside (e.g. board contact or contact during rigging) as well as from the inside (through the mast).
Plastic film made out of Polyester available in clear- or colored versions. This hard plastic film has a very low stretch (for maximum performance) and doesn‘t absorb any water (dry weight = wet weight). Attention: monofilm isn’t very UV-resistant. Therefore keep your sail out of direct sun light when not sailing. Also monofilm isn’t very abrasion resistant.
(3) XPLY LAMINATE
2 thin layers of monofilm and a pattern of threads (out of Polyester or Dyneema) are glued together creating a sandwich laminate. The additional threads are supposed to function as a rip stop in case the film gets punctured (e.g. falling into the sail with your harness hook first). When using the same total thickness as monofilm (= same low stretch, same UV- and puncture-resistance) XPly is 30% heavier due to the additional adhesive (and threads).
Before discovering monofilm original Windsurf sails were made entirely out of Dacron. This woven fabric offers a very good abrasion resistance but is very stretchy plus elongates (means it grows with each use). Therefore nowadays mainly used for reinforcement patches to protect the monofilm and XPly panels in the high abrasion areas of your sail (foot, clew, top and outside of batten pockets).
Dacron material with a self-adhesive side. Therefore it doesn‘t require seams when put on top of the film plus prevents water from getting in-between the film and the abrasion patches (= lower wet weight).
Wanna know more details or looking for DUOTONE sail spare parts – here you go
Made out of glass- or carbon fiber either as solid version with smaller diameter (= stronger) or tube version with larger diameter (= stiffer). For a better understanding the mast is like the backbone of your sail whereas the battens act like the ribs of your sail keeping the profile in place. Same as the mast also the battens have individual profiles (thinner tip, thicker tail) matching the profile of the sail.
Simple rule: the more battens the more stable (= faster + bigger wind range) the sail becomes. But also the heavier the sail becomes as battens account for approx. 40% of the sails total weight. Therefore handling/wave-oriented sails usually come with 4-5 battens whereas performance oriented sails usually come with 6-7 battens.
As a second guideline smaller sail sizes require fewer battens than larger sizes.
Usually there is a certain gap between the batten tip and the mast. This is necessary so that the batten can shift from one side of the mast to the other when sailing back and forth. A camber can be seen as a kind of connection between the batten tip and the mast filling out this gap.
This leads to much better aerodynamics as the cam enables a smooth transition between the thick mast into the thin sail body. In addition since the cam is braced against the mast the batten stabilises the sails profile much more effectively (sail becomes more stable = faster).
The downside is that the rotation from one side to the other becomes much harder. Plus the cambers need a certain space which requires a wider mast sleeve. This makes (water)starting much harder as the wider mast sleeve absorbs more water. Therefore cambers are mainly used on performance Freeride or high-performance Slalom sails.
A sail with a lot of foot roach reduces the gap between the sail and the board (close the gap) which makes it more efficient/performance-oriented.
On the other hand a high cut foot with less foot roach improves the handling especially for all kind of ducking moves.
A deeper sail profile gives you more power and performance in general.
A flatter profile on the other hand improves the handling as the distance of the flat profile is much shorter when shifting from one side to the other.
BOOM- AND LUFF LENGTH
Together with the sail size all dimensions increase. Means in general the larger the sail the longer the boom- and luff lengths become.
Simple rule: a heavier sailor needs to take a larger sail size to get planning in the same wind compared to a lightweight.
Rough indication for the biggest sail size: to get going in the same wind a 10 kg heavier guy requires a 1 sqm larger sail.
First you should define the biggest and smallest sail size you will need to cover all wind speeds you wanna sail in. This mainly depends on your body weight (see above).
Let’s take an “average” 75 kg sailor and let’s assume this guy wants to sail in “any kind” of wind.
– The biggest sail size this guy would need is something like a 7.3. With a capable 100-120 litre Freeride board this size would get him planning in approx. 8-10 knots.
– His smallest size would then be a 3.7. On a 70-80 litre (Free)Wave board our guy should be fine up to approx. 40-45 knots.
Second thing is to define the sizes in-between. Important to know: the wind pressure (which you feel in your hands) raises in square in relation to the wind speed. Therefore the smaller the sail size the smaller the size increments need to become. For large sails, the gap can be up to 1.5 sqm, while for very small sails it can go down to 0.3 sqm.
Taking all of this into account a typical quiver for our 75 kg guy could look as following:
7.3 – 6.0 – 5.3 – 4.7 – 4.2 – 3.7
Taking the “10 kg = 1 sqm” rule (see previous point) in consideration a typical quiver for an 85 kg guy could then be:
8.3 – 7.0 – 6.0 – 5-0 – 4.5 – 4.0
You have bought all parts from the same brand but if you rig according to the specs printed on the sail it still feels somehow ackward.
Unfortunately every product has tolerances in production. And the bigger a product becomes the bigger the tolerances become. Therefore tolerances on a smartphone are hardly visible whereas tolerances on Windsurf equipment are non-deniable.
– The tolerances on the mast length are approx. +-5 mm.
– The tolerances on mast extensions and booms are approx. +-3 mm.
Furthermore, there is unfortunately still no standard among brands on how to measure the length of booms and extensions.
– On a sail with all its panels the tolerances over the whole luff length can add up to another +-5-10 mm.
In addition, even with monofilm sails the luff stretches in the first 3 times you use the sail due to the massive downhaul tension.
Adding up all these tolerances you start realising why the absolute numbers printed on your sail (especially the luff length) can only be an indication to adjust your mast extension- and boom lengths.
To achieve the correct downhaul tension please make sure to only rely on the VTS (Visual Trim System) markers in the top of every DUOTONE sail.
Always keep in mind there are exactly 2 things either of them potentially killing at least 30% of your sails performance:
1. The wrong mast (see first point under MAST BASICS on every mast page)
2. Wrong/insufficient downhaul tension
- Always rig according to the rigging instructions – see here.
- After use in salt water, rinse or spray down with fresh water. At the very least at the end of a vacation or trip.
- When possible only roll up the sail once it has dried. Never store a rolled up sail for any extended periods of time unless it is dry.
- To dry, release the tension from the sail; if possible do not set out to dry in direct sunlight, and do not dry it by letting it flutter in the wind.
- Always roll the sail from top or bottom, keeping all battens under full tension in their sleeves!
- Use only recommended mast components for your sail in order to attain optimum performance.
- Do not wash your sail with harsh detergents or chemicals. Water and a mild soap are fine.
- Repair tears and holes in monofilm sails immediately to prevent further tearing. If proper repair is impossible (and this includes using the DUOTONE monofilm repair kit), at least seal the tear with normal tape or a sticker.
- The sails durability is directly related to
a. the frequency of use
b. sail care and
c. UV-radiation (especially in monofilm sails)
In places with high UV-radiation, store the sail in the shade, otherwise de-rig it.