DUOTONE SAILS 2020 Teaser E Pace
E_PACE
E_PACE
E_Pace HD
E_Pace HD
E_Pace HD
3D
SIZES
5,45,86,26,67,37,88,2

E_PACE

PERFORMANCE NO-CAM

Art.-No. 14200-1211

THERE IS NO NO-CAM SAIL OUT THERE COVERING A LARGER TRIM- AND WIND RANGE THAN THE E_PACE!

CHARACTERISTICS

Compared to S_Pace and Warp 20.20

Planing
Acceleration
Handling
Stability / V-Max
Rec. Skill Level

KEY FEATURES

E_PACE

3 IN 1 DESIGN

For an unprecedented trim range and an extremely wide wind range

HOLLOW LOWER LEECH

Enables to reduce the bottom length without loosing low end power

VTS 2.0

Optional QUICK RIGGING PATCH allows "to the spot" trimming without even looking to the top (patent pending)

MINIMUM MAST CONCEPT

Two masts cover all sail sizes

iROCKET 2.0

Factory calibrated individual batten tensions using a torque wrench

SUPER-LIGHT BUMPER

The lightest protector on the market, with integrated trim indicator

AVAILABLE IN HD

Also available in a monofilm-free HD-construction

We do care

Duotone Climate Partner
CO2 COMPENSATED PRODUCT
MORE INFORMATION
Making the most sustainable Windsurfing products on the market

Sustainability is the most important and pressing challenge of todays mankind to secure a livable mother earth for future generations to come!

Over the last 50 years Windsurfing has developed into a super high tech sport. But let's face it despite what others might tell you with the exception of aluminium booms and extensions Windsurfing products are a "mixture of petrol-based plastic trash". And most times up to 100% of this plastic trash are non-recycled (means "freshly produced") plastics. 
At least as of today there are no eco-friendly substitutes existing offering the minimum requirements necessary to design modern Windsurfing products. Or why do you think no one wants to sail with wooden booms, aluminium masts or stretchy sails made of woven fabrics anymore?
There is only one sustainable way out of this dilemma:

MAKING LONGER LASTING PRODUCTS (LONGEVITY = SUSTAINABILITY)
A high performance product that lasts longer and best case can even be put into additional use on the second hand market is the best and only way to conserve the resources of our earth.
Of course light components have a massive impact on the performance and handling of your rig. That's why light weight is always on our briefing list when designing and engineering new products. And DUOTONE products are among or in many cases are the lightest on the market.
But durability and longevity were and will ALWAYS be on top of our priority list. Our industry leading warranty extensions bear witness to this philosophy:
- 2 year unconditional warranty on almost every hardware product (masts, booms and extensions+bases).
- 5 year warranty on 80% of our sails.
On sails we cannot emphasize enough that especially reducing the thickness of the monofilm and the XPly laminate has a radical influence on the longevity/sustainability. Reducing the film thickness by 50% reduces the UV-stability by 70%. Just to shortterm impress magazine testers or customers some brands use up to 70% thinner laminates/films than we do. This is not our understanding of sustainability.

DOING MORE
However, since we are fully aware of the importance of sustainability, we cannot simply stop here.
>> Only we have stopped using any plastic for packaging our sails. This saves approx. 5 sqm of plastic film and foam per sail.
>> Only our aluminium products (booms and extensions+bases) are manufactured in a CO2 neutral production facility.
>> Only our aluminium products (booms and extensions+bases) are produced in Germany using 100% European raw materials in order to keep shipping distances (to our manufacture and then to our central warehouse) at a minimum.
>> Only our sail bags are made out of 100% recycled plastic.
>> Only we compensate all carbon emissions caused by our sails during manufacture and transport by supporting a hydropower carbon offset project in Sri Lanka, the country where our sails are produced.

Wanna know more?

DTW20 Video E Pace

DETAILS

E_PACE

The brand-new E_PACE is exactly the kind of athletic freeride sails that makes windsurfing so fascinating and uncomplicated: easy to rig, accelerate like an e-motor and get into planing without pumping. Paired with competitive speed potential and the playful handling of a no-cam sail. This is pure windsurfing, with lots of thrust, speed AND the special ease for sporty driven maneuvers.
Versatility is the great strength of the E_PACE: versatile range of use, versatile in a wide range of wind conditions. Thanks to the 3 IN 1 DESIGN with a greatly reduced luff curve, which is almost straight in the upper area, the downhaul tension has a major influence on the loose leech - and in turn on the character of the sail, depending on the trim. The two extremely wide MIN and MAX trim points offer the opportunity to cover an incredibly wide wind range and to give the E_PACE a completely different high- or low end performance and sail feeling. On MIN setting it accelerates very powerfully with the slightest wind pressure and feels incredibly light - ideal also for foiling. On MAX trim, however, it offers endless speed and control even when overpowered thanks to its pronounced loose leech.
Ergo: The new No Cam E_PACE is the perfect freeride sail for all waters and conditions, combining handling and rigging advantages with a crisp, direct feel and harmonious, sparkling power delivery. Offering lot of fun, confidence, control and wonderfully easy windsurfing. We are sure that there is no No Cam sail out there covering a larger wind range and range of use than the E_PACE.
Simply awesome: When used for foiling the E_PACE features a special clew eyelet to be able to position the sail even more upright!

All E_PACE are also available in monofilm-free HD construction. The extremely durable material mix, however, has its price, which we want to point out.

Brand Compatibility

Wanna know how other brands masts work with Duotone sails? Or how you should setup your personal sail quiver?

Sail><Mast Brand Compatibility

At DUOTONE we use a Medium Constant Curve for our masts (our bend percentages range between 61-63 bottom and 75-77 top depending on model and length). As this curve sits right in the middle within Constant Curve masts it offers the biggest compatibility of any bend curve. This makes our masts and sails the most compatible on the market.

HERE IS HOW GOOD OTHER BRAND MASTS WORK WITH OUR SAILS AND VICE VERSA:

  1. Challenger Sails, Ezzy, GA (2017 on), Goya, Gun Sails, KA Sails, Loft Sails, Naish Sails, NeilPryde (RDM masts), RRD, S2Maui, Sailloft, Sailworks, Severne (2014 on)
    >> 80-90% (depending on model and size)
     
  2. Hot Sails, NeilPryde (SDM masts), Point7, Simmer Style
    >> 70-80% (depending on model and size)
     
  3. Avanti, Gaastra (until 2016), Maui Sails, Severne (until 2013), Vandal
    >> Not compatible
Sail-Quiver Brand Compatibility

Most customers change their individual sail and mast sizes according to demand and therefore end up owning a quiver with different brands. When building up your personal sail quiver, you should try to combine sails that have a similar feel and behavior. The one decisive factor defining how similar or different one sail feels/behaves to another is the position of the draft, in both levels, vertical (high><low) and horizontal (forward><back). 

  • Freeride and slalom sails from the different brands nowadays feel quite similar since at least the horizontal draft position is forward oriented on nearly every sail today.
     
  • The biggest difference though you find with wave sails.

Basically there are 2 different kind of wave sails:

  1. Draft centered (= balanced pull on both hands) and low (to keep the sail controllable)
    These sails are the ideal companion for multi-fin boards. Since the balanced pull on both hands makes them super neutral in your hands they shine especially in real down the line conditions. On the other hand they feel very different to modern freeride and slalom sails (which are very forward pulling). So if you are using such draft back/low wave sails only very occasionally as your high wind flat water sail you might be better off with the second type of wave sails. 
     
  2. Draft forward and up (to still generate enough low end power)
    These sails work on both single- and multi-fin boards. With the forward pulling feeling they are more exiting/direct to sail and have a very similar feeling to modern freeride and slalom sails. In addition they are the ideal choice for side-onshore jumping conditions as the higher and forward oriented draft helps/accelerates rotations in the air (especially forward loops).

So when mixing your quiver with different sails/brands you should try to combine sails which have a similar draft position and thus feeling and behavior.

Just follow these guidelines:

  1. You are looking for a direct feeling wave sail especially for jumping. Or you need a smaller sail to complete your freeride or slalom sails.  Try to get draft forward/up wave sails. Typical examples are:
    Duotone Super Session / NP Zone / NP Combat / NP Atlas / Point7 Salt / Point7 Spy / Severne S1 / Severne Blade
     
  2. You are looking for a wave sail which is super neutral for down the line riding and very forgiving in nuking gusty conditions. Try to get draft centered/low wave sails. Typical examples are:
    Duotone Super Hero / GA IQ / GA Manic / Goya Fringe / Goya Banzai / Simmer Tricera / Simmer Blacktip / Simmer Icon
     
  3. Try to avoid combining draft forward/up- with draft centered/low sails in your quiver as these feel and behave extremely different. 
Sail-Quiver Brand Compatibility

Tech Specs

E_PACE

SIZES
BOOM MAX (CM)
LUFF MAX (CM)
VARIO TOP
BATTENS
CAMBER
WEIGHT (KG)
MAST TYPE (BEST/ALT.)
MAST GEO (BEST/ALT.)
MAST LENGTH (BEST/ALT.)
5.45.86.26.67.37.88.2
177183189193205211219
434436440462472482496
--------------
6666677
--------------
3.904.104.304.504.705.005.30
PLATINUM / GOLD>SILVERPLATINUM / GOLD>SILVERPLATINUM / GOLD>SILVERPLATINUM / GOLD>SILVERPLATINUM / GOLD>SILVERPLATINUM / GOLD>SILVERPLATINUM / GOLD>SILVER
SDM/RDMSDM/RDMSDM/RDMSDM/RDMSDM/--SDM/--SDM/--
430/400430430430/460460460490/460

Duotone design philosophies

Think different

What's your number one criteria when buying a new sail?

What should be your number one criteria when buying a new sail? Most likely the answer will be how much wind range and how many different conditions you can cover with one and the same sail.

SAIL DESIGN PHYSICS
All modern sails nowadays feature a top which is more or less "open"/loose in the top. This makes the top act like a valve so when a gust hits the sail the top opens to release the excess pressure and then "feathering" back. The loser the top the more it can release in overpowered conditions but the less low end power in underpowered conditions the sail offers. With a tighter top obviously it's vice versa. This defines the natrual wind range of a Windsurfing sail. The only other way to extend this natural wind range is to add battens and/or cambers. But that's about it.
If you want to extend the range of your sail beyond its natural wind range you'll need to change the trim - mainly through changing the downhaul tension. The downhaul trim range of all sails out there today is between 1-2cm.

3 IN 1 DESIGN
Chief sail designer Kai Hopf had the goal to come up with a new sail design extending this trim range as much as possible. The outcome of a 6 months development cycle is the 3 IN 1 DESIGN which offers a downhaul trim range of a whopping 4cm. Depending on the downhaul tension this groundbreaking design allows the E_PACE and S_PACE sail lines to be rigged from a nearly tight- to a super loose top.
We leave it up to your imagination what this does to the wind range and different conditions you can cover with just one sail now. 

Products have to be intuitive and as fast as possible to setup

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. 
     
  • 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.  
Polyester webbing only

Eliminating stretch and loss of tension. If it’s good enough for safety belts, it’s good enough for windsurfers! We are 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.

TECH FEATURES

E_PACE

2+3 Year Warranty
2+3 Year Warranty2+3 Year Warranty

Guaranteed quality – no other brand offers anything close to it.

Keeping weight to a minimum is a great idea. But if necessary reinforcements are reduced too much, the product’s service life will automatically get shorter. DUOTONE has struck the perfect balance between weight and durability. To prove our dedication to ensuring durability and unique quality, almost all of our sails come with a 2+3 year warranty (excluding monofilm). To secure warranty claims fully, please remember to register at www.duotonesports.com straight after your purchase. Otherwise, only statutory warranty claims will be accepted. This is valid only for original owners.

TT Top
TT TopTT Top

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.

iRocket 2.0
iRocket 2.0iRocket 2.0

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.

Mini Batten
Mini BattenMini Batten

These prevent unwanted leech flutter.

Short and highly effective mini-battens which provide support for the areas between the battens and prevent undesirable flutter.

Epoxy Batten
Epoxy BattenEpoxy Batten

Extremely stable, extremely break-resistant. Depending on the range of use, positioning in the sail and the necessary tension, the batten stress is enormous. In order to prevent breakages, we only fit into all solid battens extremely durable epoxy laminates which really can withstand anything and can live up to DUOTONE’s promises in terms of longevity.

Double Seam Technology
Double Seam TechnologyDouble Seam Technology

Double the durability with half as much stretch. DUOTONE manufactures products of unmatched quality which gives our 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.

Dura Luff Patch
Dura Luff PatchDura Luff Patch

Extremely stable luff reinforcement. The area around the boom cutout is exposed to extreme wear and tear as the luff panel gets folded when inserting and pulling out the mast. This “accordion effect” can lead to tears in the monofilm after a while. The flexible DURA LUFF PATCH reinforces this area making for a soft transition into the monofilm to avoid film breakage.

Mast Sleeve Opener
Mast Sleeve OpenerMast 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.

Progressive Cutaway Clew incl. Cross Batten
Progressive Cutaway Clew incl. Cross BattenProgressive Cutaway Clew incl. Cross Batten

Optimum combination of minimised rotation forces, power, and handling. The CROSS BATTEN concept is the intelligent solution that shifts the draft position downwards while supporting the large surface area in the boom area. It also allows for an early planing profile without losing handling. Ideal in combination with the PROGRESSIVE CUTAWAY CLEW which has an extremely positive influence on the sail’s agility and handling, and allows for a shorter, more rigid boom. Both features vary depending on the sail type and size. That is, the more pronounced the CUTAWAY and the longer the CROSS BATTEN, the more flex and comfort achieved, especially when overpowered (“excess” sail area “flexes away” in a controlled manner). The more the sail is geared towards performance, the less pronounced both components are to ensure a more direct acceleration.

X.PLY PLUS
X.PLY PLUSX.PLY PLUS

What would you prefer? Maximum puncture resistance and UV weathering resistance with minimal stretch? Or (theoretically) improved ripstop properties?

We went with option A and developed the most durable laminate on the market. Because the factors of puncture resistance, durability and stretch evidently depend only on the thickness of the film used, we use only 150 or 100 micron thick films for our exclusive XPLY PLUS. In an extensive series of tests, we have developed the ideal combination of necessary film thickness and number of threads. The X.PLY PLUS in particular, at 150 microns in thickness, boasts durability characteristics far in excess of previous laminates at minimal weight. This is also acknowledged by all the big surfing centres and rental equipment providers around the world, who place their trust in the unbeatable quality and longevity of our sails.

Polyester Webbing Only
Polyester Webbing OnlyPolyester Webbing Only

Eliminating stretch and loss of tension. If it’s good enough for safety harnesses, it’s good enough for windsurfers! We are 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.

Polyester Webbing Only
Polyester Webbing OnlyPolyester Webbing Only

Eliminating stretch and loss of tension. If it’s good enough for safety harnesses, it’s good enough for windsurfers! We are 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.

3D TOP CAP
3D TOP CAP3D 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.

VTS VISUAL TRIM SYSTEM 2.0
VTS VISUAL TRIM SYSTEM 2.0VTS VISUAL TRIM SYSTEM 2.0

Perfect trim and a huge range of use.

You won’t find a quicker or more accurate way of trimming your sail. Even beginners can trim the sail in a matter of seconds to 100% accuracy. All you need to do is pull the luff until the top of the loose leech reaches the “lower wind limit” or “upper wind limit”. The VTS acts as a power boost, ensuring maximum performance and broader range of use.

INDIVIDUAL BOOM LENGTH INDICATION
INDIVIDUAL BOOM LENGTH INDICATIONINDIVIDUAL 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.

HTS 2.0 HARNESSLINE TRIM SYSTEM
HTS 2.0 HARNESSLINE TRIM SYSTEMHTS 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.

TRIPLE TACK ROLLER
TRIPLE TACK ROLLERTRIPLE TACK ROLLER

Find the perfect trim with minimal effort.

The integrated, nickel-plated brass triple roller minimizes the downhaul forces tremendously.

DURATECH FOOT
DURATECH FOOT

Long-term guarantee for the sail foot. When starting off on the water or catching up, the foot of the sail is constantly dragged over the nonslip coating, particularly for wide boards. With the exclusive DURATECH FOOT, the seams are completely protected within a large plastic channel so that the surface cannot chafe against seams and material.

TRUE QUOTES

E_PACE

MARCO LANG
“WITH THE BRAND NEW 3 IN 1 DESIGN THE E_PACE GETS AN UNPRECEDENTED TRIM RANGE AND CAN BE EXTREMELY CHANGED. THAT'S WHY DEPENDING ON THE TRIM IT’S BOTH THE MOST POWERFUL YET THE FASTEST NO CAM SAIL WE'VE EVER BUILT!”
MARCO LANG

Sail Basics

Design physics of modern Windsurf sails

Materials

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).

(2) MONOFILM
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).

(4) DACRON
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).

(5) INSIGNIA
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

Materials
Design Features

BATTENS
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.

CAMBERS
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.

FOOT ROACH
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. 

PROFILE DEPTH
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.

Design Features
Sail size vs. body weight

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.

Guidelines for building up your personal sail quiver

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

Why not blindly rig according to the specs printed on the sail?

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

Sail Care
  1. After use in salt water, rinse or spray down with fresh water. At the very least at the end of a vacation or trip.
     
  2. 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.
     
  3. 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.
     
  4. Always roll the sail from top or bottom, keeping all battens under full tension in their sleeves!
     
  5. Use only recommended mast components for your sail in order to attain optimum performance.
     
  6. Do not wash your sail with harsh detergents or chemicals. Water and a mild soap are fine.
     
  7. 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.
     
  8. 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.

WANNA EXTEND YOUR 2 YEAR WARRANTY BY ANOTHER 3 YEARS?

TO SECURE THE EXTENDED CLAIMS PLEASE REGISTER WITHIN 30 DAYS.
OTHERWISE JUST THE LEGAL WARRANTY PERIOD CAN BE GRANTED!

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360° VIEW

E_PACE

GALLERY

E_PACE

VTS Min trim

Low downhaul tension

LEADS TO:
tight leech (= reduced sail twist), reduced sail- AND MAST PRE-tension (= increased mast twist), draft slightly further back

ON THE WATER:
>> Maximum low end power/PULL
>> Easier and more efficient to pump
>> Softer and more comfortable to sail in low end conditions
(very efficient especially on Freeride boards like e.g. Fanatic Gecko)
>> Tight leech ideal for Foil uSage

(ESPECIALLY IN COMBINATION WITH THE
ADDITIONAL LOWER CLEW FOIL EYELET)

VTS Max trim

HIGH downhaul tension

LEADS TO:
PRONOUNCED LOOSE leech (= increased saiL twist), HIGH sail- AND MAST PRE-tension (= reduced mast twist), draft slightly further FORWARD

ON THE WATER:
>> Maximum HIGH-end-CONTROL / V-MAX
>> MORE FORWARD AND DIRECT PULL FOR EXPLOSIVE ACCELERATION WHEN POWERED UP
(very efficient especially on Freerace boards like e.g. Fanatic Blast)

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