ROBERT STROJ
RS:One sail designer
Good low end performance from moderate luff curve and pronounced profile.
Durable with strong cams, heavy-duty two piece tube/rod battens and reinforced critical areas.
Large wind range due to the dynamic compact clew allowing the profile behind the clew to twist off when wind pressure increases, thus controlling excessive power.
Easy to handle with 2 cams and moderate width mast sleeve.
Sail Specs
| Size |
LUFF |
BOOM |
BASE |
BATTENS |
CAMS |
IDEAL MAST |
CODE |
| 7.8 |
485cm |
222cm |
26cm |
5 |
2 |
RS:One 460 |
BNPRSONE |
THE
DCC
With the Dynamic Compact Clew, where the clew is positioned forward from the trailing edge, the profile behind the clew is able to twist off when wind pressure increases. The sail automatically adjusts its shape and thus controls excessive power.
In addition, it also creates an 'S' profile on the batten, effectively pushing the deepest profile point forward, preventing it from moving back while overpowered, or enabling to hold pressure and keep the lower leech tight in light winds and while riding upwind.
SAIL
DESIGN
Kevlar Reinforcement
Kevlar Reinforcement above the clew area to stiffen the sail and remove any stretch in this area. As an ultimate strength to weight ratio fiber with very good adhesion properties, KevlarTM was a natural choice when constructing our reinforcements.
Dyneema®
In order to be able to reduce weight of the sails we developed a completely new range of laminate materials, which are all using Dyneema® yarns as a rip-stop. Dyneema® has similar breaking strength to KevlarTM, but much better UV resistance, making it a fiber of choice for this application.
Application of this high strength rip-stop grid allowed us to use thinner films in new laminates to significantly reduce weight while improving durability at the same time. To ensure strong multi layer lamination, the Dyneema® yarns used in NeilPryde sails are twisted with polyester which ensures the yarns are well anchored within the film layers
Full KevlarTM tape leech reinforcement
As KevlarTM provides ultimate strength to weight ratio for sail making fibers we chose to use fully woven, adhesive KevlarTM tape around entire leech and foot parameter on 2010 sails. This tape stabilizes shape of leech and foot by preventing any stretch along these extreme parameter load lines. At the same time it provides perfect stitch holding and prevents sails ripping through. Since KevlarTM is sensitive to UV we take care that any time we use KevlarTM in the sail it is completely covered by other materials in order for it to keep its properties after years of use.
Dacron and film tack reinforcement
Dacron as a tear resistant material in combination with film is used in different staggered layers to provide a stiff clew patch that helps distribute the outhaul tension over a larger area of the sail giving optimum performance and durability all while providing a clean look on and off the water.
Rubber Foot Piping
Protects the foot edge of the sail from wear caused by the non-skid on the deck of the board
3D Moulded tack fairingt
Completely encloses all pulleys and base elements. This helps protect the deck of the board from impact damage. Manufactured from heat moulded closed cell foam to offer maximum protection and minimal weight without water absorption. Includes an uphaul hole for a clean attachment of the uphaul rope. Neoprene front piece makes it easy to fold the tack fairing back when threading the downhaul rope through the sail's tack pulley.
Mast tip chafe protector and 3D moulded Head Fairing
Protects the top of the sail from abrasion damage.
Also includes an easy de-rigging loop.
High Grade Plastic Batcams
Positive lock BatCams. Allows the rider to precisely tune and set the batten tension. Easy to open when replacing battens or adjusting batten tension. No tools required for tension adjustment UV resistant material.
Polyurethane (PU) moulded batten end chafe protector
Protects the ends of the batten pockets from abrasion damage when rigging and de-rigging
Battens
Heavy Duty two pieces tube/rod combination battens
Composite mini leech battens
Aerodynamic composite mini battens are sewn directly onto the upper sections of the sail for added stability and durability – without a significant increase in weight
Triple roller tack fitting
A solid metal tack fitting of heavy duty construction. Three large nickel plated rollers offering minimal downhaul friction over an extended lifespan.
Sail toggle
All NeilPryde sails include an elastic loop and sail toggle system for keeping the sail rolled up during storage.
Reinforced Eyelet
Reinforced eyelet in the tack fairing provides a place to thread the adjustable down-haul line through to provide a clean finish and optimum function of the adjustable down-haul line.
Cam Pressure
Adjustment System
An innovative system using molded spacers that allow sailors to perfectly adjust the pressure on the cambers to fit their individual needs. Because not every sailor is the same size or needs the same amount of cam pressure, and because sails are not rigid structures and stretch throughout their life, this system allows the sailor to always have the perfect mast/sail tuning.
Cam
Wide shouldered cams providing ample support area for superior leading edge development and draft stability combined with soft rotation.
Please explain the sail design.
Main rig characteristics we needed to achieve with RS:One were easy handling combined with good performance in sub-planning conditions as well as control and performance when planning. We needed a rig with as large wind range as possible.
We decided that 7.8 will be a perfect size in order to keep the rig light and easy to handle by youth sailors while still providing good low-end power, keeping the board on rail while sailing upwind and getting planning early.
What were the big R&D steps for this sail?
To achieve the design goal we worked on towards a lightweight rig but optimum durability was also a very important point as RS:One will be used by much younger and less experienced sailors than RS:X. We decided to use a five batten plus Flexhead platform (similar to NeilPryde Helium) in order to keep weight to minimum and to get the maximum lift and light wind performance out of a 7.8 sail. We used two lightweight, simple and strong cams, the same as currently used on RS:X. Batten construction uses a heavy-duty two-piece tube/rod combination which eliminates lightweight (but more fragile) three-piece construction used in RS:X. This is the optimal balance between profile stability, performance and durability.
What makes this sail different to RS:X?
The main differences to RS:X are size reduction, focus on easy handling, light weight as well as durability. While in RS:X rigs we use much more exotic materials (Carbon boom, 100% Carbon mast, three-piece batten construction) in order to get maximum performance, on RS:One we worked on a design which uses the best construction compromises that give us optimum balance between easy handling, performance and durability.
What about the performance?
With above explained design features we achieved a rig that is very easy to handle, is responsive to pumping and that will get the RS:One board on the rail when sailing upwind and planning on a downwind course in very light winds. The RS:One sail responds very well to different tuning settings, so it is easy to trim the sail for optimum control and speed in the upper end, effectively extending to the maximum the wind range covered by a single 7.8 sail.
