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RMR-Reefing boat masts
RMR reef masts are constantly updated and with their proven drive technology are particularly designed for sailors who need to reef the mainsail simply and safely when navigational with a small crew.
The RMR system makes it easier to handle both large and small yachts. Reefing the mainsail to the required size can be done by one person from the safety of the cockpit.
The drive for the luff rod is provided by a virtually maintenance-free hydraulic drive with self-braking worm gear, spiral bevel gears and helical drive gears in combination with a robust Danfoss hydraulic motor. |
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Rondal constantly strives to optimise style and structural soundness. The combination of engineering and style found in our marine winch bases, mast/spreader connections, spreader boat lights and so on reflect our attention to detail. Masthead, gooseneck and many other components are designed, cut and milled with the aid of computer for boats assisted machinery to ensure accuracy and cost-effective production. To counteract any problems associated with corrosion, Rondal welds all aluminium tangs, brackets and other fittings. When stainless parts are fitted, maximum effort is made to avoid corrosion in the future. The mastheels are constructed from plate material, either to fit in a standard Rondal maststep or on a Rondal hydraulic mastjack. All boat masts are completed with a two component polyurethane paint for boats finish. Clients can choose almost every possible colour.
Made of Alustar aluminium plate
In order to bring down the weight and the centre of gravity of our aluminium masts, Rondal developed the alternative method by utilizing ALUSTAR aluminium plate material for the construction of masts.
These masts are engineered and produced to just cover for boats the required Moments of Inertia over the full length of the mast in both longitudinal and transversal direction. |
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C-Tech manufactures boat masts for sports boats in:
- Round section, suitable for boats like Thompson 590
- Oval section, suitable for larger size masts
Construction techniques
- available in standard, intermediate or high modulus carbon fiber
- reinforcing for fittings can be built into laminate
- shrink-wrapped and heat cured
- black carbon finish or painted
- can be built to any size specifications
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The demand for lighter boat masts (and booms) shows no sign of abating as owners request ever-lighter displacement cruising yachts. Anticipating this trend, Rondal became involved in the carbon fibre field at an early stage. Assisted by the Dutch Aerospace Laboratory at the design stage, it is believed that Rondal has chosen the best way of production.
Characteristic for the Rondal carbon fibre mast is that, whatever the length, the mast is built in one piece. Building the mast in one piece has the huge advantage that the fibres in the 0° layers run from top to bottom without any interruption in the fibres. All compression forces can be guided safely through the laminate. |
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| Extruded aluminium is an excellent material for making boat masts. This is where Selden has earned its reputation as world leader in mast making. Today Selden offers a full range of masts and rig marine equipment in both aluminium and carbon including booms, spinnaker poles, Rodkicker rigid vangs, furling systems and rig linings. All rigs are custom-made, through every calculation and detail, lor each individual boat. We know how much depends on the rig, and there is no room for compromise. |
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The push-button controls in the cockpit give you complete command of your mainsail. You can also trim the outhaul when sailing close hauled - a task which would ordinarily require the full strength of a crew member using a manual marine winch. Furthermore, there is no clew outhaul line to clutter up the cockpit.
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It's no coincidence that carbon fibre is used in aeroplanes. Carbon composite combines stiffness and strength with low weight. Selden low-weight carbon spars have accentuated longitudinal stiffness. This means that forestay tension can be substantially increased. All experienced racing sailors know what this means in terms of increased performance. The combination of greater stiffness and reduced weight will bring you beyond the speed limits.
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| A Seldén furling mast for boats lets you operate your mainsail from the cockpit, simply ans easily. Its unique features for reducing friction and initial sail resistance make furling and reefing child's play. And it also makes sailing safer and far easier for you and your crew. |
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| Hall seamless carbon spars are the perfect complement to the high-performance cruising yacht. The light weight means less pitching and motion in a seaway. It also gives the designer flexibility to put weight into the interior instead of the keel (righting moment). |
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| Hall seamless carbon-fiber boat masts have no peer in the combination of light weight, stiffness, and the ability to tune easily for changing conditions. Hall is the choice of the winning Cup crew in the last two events. |
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Established in 2004, our One Design business is dedicated to supplying production rigs, from high performance dinghies for boats up to 60 foot performance cruisers. We apply the lessons learned at the grand prix end of the spectrum to create superb high performing consistent production rigs. Our tools are scientific analysis, sound knowledge and a passion for high performance yachting.
Southern Spars One Design is committed to producing high performance carbon rigs with an emphasis on value for money - spending money where it counts. The experience from 15 years of building the most successful custom carbon rigs in the world is being used in the manufacture and design of production One Design rigs. |
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| Hall seamless carbon-fiber spars are light and strong, and tested around the world on racing boats from Cup racers, Volvo 70s, TP52s to J24s. |
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| ... products without information |
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The push-button controls in the cockpit give you complete command of your mainsail. You can also trim the outhaul when sailing close hauled - a task which would ordinarily require the full strength of a crew member using a manual marine winch. Furthermore, there is no clew outhaul line to clutter up the cockpit.
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| A Seldén furling mast for boats lets you operate your mainsail from the cockpit, simply ans easily. Its unique features for reducing friction and initial sail resistance make furling and reefing child's play. And it also makes sailing safer and far easier for you and your crew. |
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