Code zero furler price
This in turn enables load sharing and allows the flying shape of the Helix sail structure to fly unencumbered by the stiffness, weight and diameter of a conventional cable,’ explains Braun.īelow: The Helix Luff Cord (below right) delivers reliable top-down furling at a fraction of the size, weight, and stiffness of traditional anti-torsion cables (below left) ‘The Helix Luff Cord allows for top-down furling at a fraction of the size, weight and stiffness of past luff cables. Fortunately JB and Seth and our teams came up with a product that is truly a breakthrough.’ We needed to develop a system that incorporated light weight and ease of handling along with clear sail shape and performance advantages. ‘It would have been easy to simply retrofit standard torsion cables back into Helix. ‘As the Helix concept has grown exponentially over the past year and a half, it became clear that bottomup furling of 75 per cent mid-girth sails was unreliable at best,’ says North Sails president Ken Read. The latest advance in North Sailsʼ Load Sharing Technology, Helix Luff Cord has been sea trialled on a range of boats over the last five months
#Code zero furler price code#
Main picture: Sir Peter Ogdenʼs (recently elongated) mini-maxi racer Jethou is an early adopter of North Sailsʼ new Helix Luff Cord technology, which enables Northʼs self-supporting Helix code sails to reap the safety and reliability benefits of topdown furling while allowing these forward-projecting sails to fly unencumbered by the weight, stiffness and diameter of a conventional cable. The designs were then run through Flow, which analysed wind pressures across the sail as cord and sail load up together,’ Braun explains.
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Membrain, our exclusive load analysis software, helped the team understand the loads on the boat, mast and sails, right down to the specific load sharing ratios between cord and sail. ‘Along with Future Fibres’ project engineer Seth Cooley, we employed several tools within the North Design Suite to first validate the concept and then to understand the aeroelastic coupling when a Helix sail is exposed to a fluid flow. The onboard benefit is a safe and reliable top-down furl, while reaping the benefits of a free-flying, forward-projecting Helix sail.
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As the sail trim changes, the cord to sail load ratio remains the same. The cords are built to the precise tensile stiffness which allows for optimal load sharing between the cable and the sail. Designed to work exclusively with North Helix sails, the innovative product brings top-down furling back to self-supporting code sails. This exciting new product was designed and manufactured by North Sails’ partner Future Fibres, who took their vast experience and technical expertise in torsion cable and furler integration to the next level on this shared R&D project. ‘The latest advancement in Load Sharing Technology is the Helix Luff Cord, co-engineered by North Sails and Future Fibres. This load sharing system is exclusive to North Helix sails,’ says Braun.
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‘Continually pushing the leading edge forward, North Sails has collaborated with Future Fibres to engineer the next refinement to Helix sails – a cord that allows all the performance benefits of Load Sharing Technology and the reliability that comes from top-down furling for sails with mid-girths greater than 60 per cent. North Sails’ director of design and engineering JB Braun explains an innovative engineering solution that brings top-down furling to Load Sharing Sails