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GUNSAILS | Bow - With the BOW sail the GUNSAILS R&D team introduces a completely new concept in sail design. The sail always stays balanced from low to high wind and transforms every gust into drive. And all this with only one trim setting. 4 cambers crea
GUNSAILS | Bow - With the BOW sail the GUNSAILS R&D team introduces a completely new concept in sail design. The sail always stays balanced from low to high wind and transforms every gust into drive. And all this with only one trim setting. 4 cambers crea GUNSAILS | Bow - With the BOW sail the GUNSAILS R&D team introduces a completely new concept in sail design. The sail always stays balanced from low to high wind and transforms every gust into drive. And all this with only one trim setting. 4 cambers crea GUNSAILS | Bow - With the BOW sail the GUNSAILS R&D team introduces a completely new concept in sail design. The sail always stays balanced from low to high wind and transforms every gust into drive. And all this with only one trim setting. 4 cambers crea GUNSAILS | Bow - With the BOW sail the GUNSAILS R&D team introduces a completely new concept in sail design. The sail always stays balanced from low to high wind and transforms every gust into drive. And all this with only one trim setting. 4 cambers crea GUNSAILS | Bow - With the BOW sail the GUNSAILS R&D team introduces a completely new concept in sail design. The sail always stays balanced from low to high wind and transforms every gust into drive. And all this with only one trim setting. 4 cambers crea GUNSAILS | Bow - With the BOW sail the GUNSAILS R&D team introduces a completely new concept in sail design. The sail always stays balanced from low to high wind and transforms every gust into drive. And all this with only one trim setting. 4 cambers crea GUNSAILS | Bow - With the BOW sail the GUNSAILS R&D team introduces a completely new concept in sail design. The sail always stays balanced from low to high wind and transforms every gust into drive. And all this with only one trim setting. 4 cambers crea

BOW 2019

Delivery Time
2-3 Tage

4 CAM SLALOM / FOIL

With the BOW sail the GUNSAILS R&D team introduces a completely new concept in sail design. The sail always stays balanced from low to high wind and transforms every gust into drive. And all this with only one trim setting. 4 cambers create a powerful profile and plenty of performance. By exploiting the sail area more efficiently, the BOW shines with excellent planing, very good acceleration and an overwhelming top speed. Thanks to the adaptive profile, the sail remains controllable without effort. For freeracers and slalom pilots, the BOW is the new alternative to the conventional Loose Leech sail.

KEY FACTS:
4-Cam Concept Sail for Freerace, Slalom and Foil
BOW FLEX mast is mandatory
No Loose Leech, the BOW uses more surface
Special friction bearing that allows rotation of the mast
3D Mast Sleeve Shape and Cross Batten Concept
Neoprene Cover at boom opening for better aerodynamics
Tack Strap to regulate the tension of the sail foot

Here you find the BOW MAST.





At €669.00

Incl. VAT

Grouped product items
Product Name SizeBoomLuffBattens/TubesBest MastMastMast, ø Stock Price Links
BOW 6.9 2019 6.91984937/7Bow Flex490SDM
€669.00
More Information
Größe6.9
Boom198
Luff, cm493
Latten/Tubes7/7
Best MastBow Flex
Mast cm490
Mast ØSDM
BOW 7.8 2019 7.82165067/7Bow Flex490SDM
€679.00
More Information
Größe7.8
Boom216
Luff, cm506
Latten/Tubes7/7
Best MastBow Flex
Mast cm490
Mast ØSDM
BOW 8.7 2019 8.72305197/7Bow Flex490SDM
€699.00
More Information
Größe8.7
Boom230
Luff, cm519
Latten/Tubes7/7
Best MastBow Flex
Mast cm490
Mast ØSDM
  • Available
  • On the way to us
  • Not available

* Incl. VAT, excl. Shipping Cost

Are you ready for something new?
And by that we mean not just a new sail, but something innovative, even revolutionary.
Then be a pioneer and drive the sail with the widest wind range. Thanks to the BOW concept, the sail always stays balanced from low to high wind and transforms every gust into drive. And all this with only one trim setting. 4 cambers create a powerful profile and plenty of performance. By exploiting the sail area more efficiently, the BOW shines with excellent planing, very good acceleration and an overwhelming top speed. Thanks to the adaptive profile, the sail remains controllable without effort. For freeracers and slalom pilots, the BOW is the new alternative to the conventional Loose Leech sail.
But the BOW also proves to be excellent for foiling. No matter if you are a foiling beginner or a pro, the constant power on the boom and the continuous drive makes it much easier to control the foil. Thanks to the more efficient profile of the sail, the foil can already take off with less wind.
More wind range, more control and plenty of performance! Are you ready for the future?  


BOW | INNOVATIVE SAIL CONCEPT

With the BOW sail the GUNSAILS R&D team introduces a completely new concept in sail design.
Within 2 years of continuous development, Pieter Bijl and Renato Morlotti have managed to realize this innovative idea in a sail. The BOW offers new dimensions in handling and wind range and shows a unique efficiency. With its adaptive capabilities, the BOW delivers constant power and effortless drive across a huge wind range.
The sail is not only perfect for foiling, but also provides a new feeling of windsurfing on a freerace or slalom board. This innovative concept also includes the specially developed BOW FLEX mast, which is rotating within the sail.


THE BOW CONCEPT

The BOW concept is based on a new sail outline with an extreme bending curve in the top. This extreme curve is only achievable with the BOW FLEX mast.
Due to the low luff tension and the innovative design, the sail does not have any loose leech. In the following the functionality of the BOW concept is explained in further detail.


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THE BOW PROFILE

Thanks to a special friction bearing, which allows the mast to rotate within the boom, the mast can rotate inside the sail, thus allowing the upper area of the sail to twist and bend away.
In contrast to the Loose Leech concept, where only a small part of the leech twists, the BOW has a much larger area to adapt to the strength of the wind.
When the wind strength and thus the wind load in the sail increases (high loading), the upper part of the sail turns leeward and the profile adapts dynamically.
The holding forces on the boom remain the same. Only the profile adapts to the higher loading.
When the wind force and thus the load in the sail decreases (low loading), the sail turns back to its original position. Now, the lower wind energy is compensated by the more efficient profile.
The drive as well as the holding forces remain the same. This ability facilitates handling enormously and also improves performance while going upwind.
The described adjustment of the BOW is more dynamic and effective than the Loose Leech mechanism. Due to the well defined and firm edge at the leech, there is no fluttering and the associated small stalls in the profile.
CONCLUSION
Similar to a Loose Leech sail, the BOW regulates itself in gusts and wind holes, but the available area is larger and more efficient. Thus, it covers a much larger wind range in total.
For the windsurfer, this ability leads to an effortless and comfortable windsurfing experience, combined with the performance and drive of a camber sail.
Due to its continuous drive and feather-light handling, the BOW sail is predestined for foiling.


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TENSION TRIANGLE

The ground of any sail design is based on a tension triangle that is created between the clew, top and mast. This is also the area which can be actively controlled by the windsurfer at the boom. The special outline of the BOW sail allows it to have a bigger area within the tension triangle. The now bigger area of the sail that can be directly controlled by the windsurfer, does lead to a significant increase in efficiency and control. A BOW sail can therefore be chosen in a smaller size compared to a Loose Leech sail.

RELEASE AREA

Current sail concepts have the ability to adapt to a certain degree to the prevailing wind force. The area that allows the load to be redirected from the sail is called the release area. Marked in blue here. The adaptation of the BOW sail, caused by the rotating
and very flexible mast, enlarges the release area considerably and lets it extend far into the sail profile. In the marked area, the profile changes depending on the wind force. It is precisely this relatively larger area that makes the unique adaptability of the sail possible. However, most of the release area remains within the Tension Triangle. That means, although the profile adjusts continuously, it retains its efficiency and can be easily controlled by the windsurfer.


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INTELLIGENT MATERIAL ASSEMBLY

GUNSAILS | Bow 2019 Sail Technology

The well designed combination of different materials allows a weight reduction without any loss of stability. Due to different stretching characteristics of the individual materials, we can precisely define each sail profile under stress and guarantee you stable sail performance for a long time.


CROSS BATTEN CONCEPT

GUNSAILS | Bow 2019 Sail Technology

Mostly used on the flatwater range due to a lot of surface in the boom area. The longest batten of the sail starts below the boom area, crosses the boom line and ends above the clew. The crossing batten does stabilize the profile, which is extremely important in that area. Like that the sail is more effective in acceleration and pumping and has a more stable pressure point.


SYMMETRICAL BATTEN SYSTEM

GUNSAILS | BOW 2019 Sail Technology

The alternate positioning of the battens on the back and the front of the sail leads to a more equalized tension- and weight distribution. This arrangement will provide you with the exact same sail feeling, independent of the direction you are riding.


3D WING SLEEVE

GUNSAILS | Bow 2019 Sail Technology

The aerodynamically optimized mast sleeve, resembles the wing of an airplane and enables maximum power development of your sail. An additional line of kevlar warp laminate in the middle of the mast sleeve is working like an anchor, holding the 3D profile in its defined position. Therefore the center of effort stays always in its place and the sail continuously accelerates!


SMART CLEW CONSTRUCTION

GUNSAILS | Bow 2019 Sail Technology

The Smart Clew Construction is based on the tension specific and precise alignment of different materials. The result is an extremely durable clew area without additional weight. Depending the sail the layout of the materials varies in order to suit the resulting tension lines in order to distribute the force from the clew, towards the Tension Frame into the sail. That helps to create more response, better profile stability and long lasting sail characteristics.


DOUBLE LOCK SEAMS

GUNSAILS | Bow 2019 Sail Technology

Double Seams provide the most stable connection between panels or different materials. They find use in areas of high material tension and make your sail tough and durable.


MULTIDIRECTIONAL X-PLY

GUNSAILS | Bow 2019 Sail Technology

Multidirectional X-Ply is used in high stress areas. The thread layout shows a higher density of polyester yarn, thus making the material more resistant than the regular X-Ply. The additional vertical thread direction allows the material to take more tension and force in the critical tension line.


SQUARE PLY

GUNSAILS | Bow 2019 Sail Technology

The square ply is based on the same concept as X-ply material. However the threads are aligned in a 90 degree angle and the material offers a higher overall thread density. That allows us to reduce the thickness of the included monofilm to save weight, but ensure durability at the same time.


KEVLAR STRETCH CONTROL

GUNSAILS | Bow 2019 Sail Technology

Through the selected use of kevlar warp laminate, we are able to precisely define the stretch properties of every sail. This leads to more response and a long lasting and stable sail profile. The light and unidirectional kevlar threads show very low stretch, even under highest loads. They are individually positioned in each sail to suit its range of application, leading to long lasting performance and sail characteristics.


BOW CAMBER MIX

GUNSAILS | GS-R 2019 Sail Technology

Our cambers have outlying rolls which ensure easy positioning on the mast. Once in position, the rolls reduce the friction and allow an easier and softer rotation of the sail. We offer four different types of camber depending on the position they are used in the sail.


BATTEN MATRIX

GUNSAILS | GS-R 2019 Sail Technology

The choice of the right batten setup with the correct batten type is a crucial point to influence and optimize the sail profile. In the BOW we use up to 4 different tube batten diameters in order to create the aerodynamically perfect profile. Light 9 and 11mm tubes in the top area to control the twist and save weight, combined with slightly stiffer 14 and 16 mm tubes in the boom area to withstand higher sail pressures and secure the profile stability.


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