Racing symmetric and asymmetric spinnakers

OneSails Symmetrisk og Asymmetrisk Regatta Spinnaker

Seilene som har den største utviklingen i dag, er spinnakeren. Med hjelp av bedre tekstiler og teknologi, er spinnakeren både langt mer effektiv på lens og skarp slør opp mot 45 ° relativ vind. Studier med nesten like båter har vist at fart på slør og lens avhenger like mye av fasongen som størrelsen på seilet. Dette er spesielt viktig i seiling med små marginer. OneSails leverer alle versjoner av regatta spinnakere for regattabåter. Utformingen av hver spinnaker er tilpasset båten for å gi best mulig ytelse.

Programmet OneSails bruker tar hensyn til vekt og skrog ved utforming av riktig seilfasong. Hos OneSails ønsker vårt designteam å snakke med deg for å tilpasse spinnakeren din båt. Deres rike erfaring som strekker seg fra America's Cup til små One Design-klasser, bidrar til å sikre at de har kunnskap for å gi deg de riktige rådene. Vi ønsker å gjøre det enklere for deg å få ut maks potensiale av seilene dine. Diagrammet under for valg av riktig seil til riktig vindhastighet og styrke, skal hjelpe deg å velge riktig seil.


OneSails presenterer IFSTM (integrated Furling system/ Integrert rullesystem), en nyutviklet teknologi for forseil og flyvende forseil, hvor vi bruker kontinuerlige fibre i forkant av seilene for å rulles uten bruk av tunge eller kostbare torsjonsstive tauverk.

Seil deisgnet med IFSTM, har et nett av kontinuerlige fibre lagt fra topp til bunn i forliket og erstatter bruken av torsjonsstivt tauverk. Med denne teknologien kan flere typer seil rulles som følge av redusert vekt og enkel håndtering.

  1. Forbedret aerodynamisk ytelse.
  2. Med integrert fiberstruktur i seilet, kan det rulles uten torsjonsstivt tau.
  3. Krever mindre fall spenning. Redusert med 35% i forhold til seil med tau.
  4. Uten torsjonsstivt tau kan forliket designes med positivt og negativ skuldre som gir seilene bedre trimegenskaper.
  5. Lettere å håndtere because the furled sail is light and can easily be folded to fit in its bag.
  6. Stable leech profile et rullet seil med sin lave vekt, pakkes også enkelt i tilhørende bag.
  7. Stabil akterliksprofil som også måles inn under ORC og IRC reglene.
  8. Skreddersydde tilpasninger og tilbehør.

Power-reaching has always been a highlight of offshore racing but more sailors are now also looking beyond those up and down inshore courses

There is nothing more exhilarating in offshore sailing than power- reaching – the point of sail we dream about that makes the other legs of a tough race worth the pain... High speeds, spray and that visceral thrill we get knowing a boat is being pushed to its limits as the miles are speedily devoured. A drawback on this point of sail, however, is the heeling and imbalance that can happen when there’s either too much force on the sailplan from the masthead Code 0 (MH0) or even the fractional Code 0 (FR0), resulting in costly sometimes brutal course deviations to hold on to these sails. Yet the speed and power are hard to give up, even with the extra miles covered – while constantly recalculating the VMG trade-offs against a lower heading.

Often the only way to stay high enough to stay on course is to reduce the power and heeling moment by dousing the larger sails and shifting down to smaller headsails. But then there is a significant loss of power and speed, with more of the mainsail needed to maintain drive force. Using more main means shifting the load balance aft, which in turn results in more helm pressure to stay on track. The more main used, the more weather helm needed, and the greater the rudder angle which creates drag, inhibiting speed further.

The result is often a ‘void’ for the otherwise well-equipped offshore racer where the sail inventory is simply not optimised to get the best speed at the desired angle. The latest-generation ocean greyhounds chasing course records know this and have been designed with their masts well aft, creating enormous foretriangles in which to fly multiple combinations of headsails and staysails, often mounted on furlers for easy deployment.

Not all of us have the luxury of reconfiguring the entire boat – mast position, sailplan and appendages – just to accommodate a larger foretriangle and remain competitive in other sailing modes. But we can find speed in reducing heel while retaining power in the sailplan.

OneSails has been working hard on this problem. Paul Eldrid of OneSails in Perth is gearing up for the Austral summer season, and examining how to power up a variety of fast designs ranging from a Bakewell-White 36 to a HH42, DK 46, Carkeek 47 and several TP52s. All show benefits from new reaching headsail designs from OneSails. When given the space to operate efficiently, flying multiple headsails will not only provide more power to better balance out a fully trimmed mainsail, and reduce drag from the rudder, it will also stabilise the flow across the whole sailplan.

‘Fortunately there are no restrictions in IRC and very generous headsail allowances in ORCi that allow for development of these sails to fit an important niche for the passage racer,’ says Eldrid. ‘We have made several discoveries in this process that we think will really re-energise these boats in reaching conditions.’

Rather than the traditional arrangement of tacking a reaching headsail at the bow and then trying to fit in a genoa staysail somewhere on the foredeck, Eldrid has been experimenting with putting the larger headsail out on the end of the bowsprit (called the J0), giving plenty of room to fit another headsail aft of this, such as the new square-top jib staysail (the JS).

Many of us are used to course racing, where headsails all carry battens... this is not necessary with these reaching sails since the depth is further aft and leeches do not need to be straight, in fact they should twist for optimal flow. With no battens, furlers then become a strong option for more boats.

Optimal combinations of the headsails, reaching spinnakers and a reefed or full-hoist main are many and varied. Mindful of cost, OneSails is now developing ‘turbo-charged multiple headsail solutions’ that still use the niches of the MH0 and FR0 but now supplement them with new sails including the J0 and JS.

Up until now OneSails has been building these sails in panelled construction as they test mould shapes at full scale. However, the company’s design and R&D teams are also conducting a fuller Fluid Structure Interaction (FSI) study to provide the data to start using its continuous yarns one-piece 4T FORTE composite membranes to optimise for strength and weight.

‘Already we’re seeing a strong interest in bringing back the fun and thrill of more efficient reaching on all courses,’ says Eldrid. ‘This is an exciting new development path.’

Why choose OneSails

1. Exclusive technology.
For over 10 years the OneSails design team have developed exclusive technologies to make one-piece continuous thread sails a reality for cruising and racing boats.

2. Performance.
Features like weight, shape control and deformation resistance means better performance compared to traditional panelled sails.

3. Quality.
Sails are designed and manufactured to the very highest standards from carefully selected components to ensure the very highest quality and durability. 4T FORTE™ and M3™ membranes are exclusively made in Italy. All the assembly process is completely made in a unique factory ensuring the meeting of all the required standards.

4. Design.
The best sail shapes are the result of continuous analysis and experience. OneSails is at the forefront of the sailmaking industry, continually investing in research and development to ensure that the very best sail shapes are available. The success of this approach is confirmed by the vast array of racing trophies OneSails clients have won, competing at National, International and World Championship level.

5. Service.
A core activity for every OneSails Loft is providing first class service, support and assistance. As part of our service commitment, each OneSails Loft has a team of experts on hand to ensure that we can deliver on our service pledge. In addition to a growing number of principle lofts, the OneSails Group has an extensive network of service centres strategically placed worldwide's coast line.

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