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Keelboat product catalogue A4

Keelboat product catalogue A4
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Keelboat product catalogue A4

Product catalog summary
Introduction
Seldén is a prominent manufacturer specializing in mast and rigging systems, aiming to enhance the sailing experience through meticulous product development. The company prioritizes race-winning sail handling, high-quality materials, and a comprehensive global service network.
Attention to Detail
Seldén's approach focuses on achieving optimal functionality by paying attention to every detail, from material selection to rigorous testing. Each rig is custom-designed based on the boat's specifications and owner's preferences, ensuring a well-functioning system.
Keelboat Definition
A keelboat is defined as a boat between a dinghy and a yacht, typically 18-28 feet long with a 50% ballast ratio. Seldén has been a leader in this field since 1960, maintaining a focus on quality and precision.
Rig Calculation
Accurate rig calculations rely on quality input data, gathered through the 'Seldén Rig Fact Sheet,' which includes rigging type, sail plan dimensions, and righting moment information.
Custom-Made Rigs
All Seldén rigs are custom-made, including masts, booms, and spinnaker poles, available in both aluminum and carbon. Each rig is tailored to the specific boat type, ensuring no compromise on performance.
Masts
Aluminum Masts: Seldén offers a range of aluminum mast sections with sophisticated solutions and a tapered top for reduced weight and improved performance.
Carbon Masts: Designed for high stiffness and low weight, carbon masts allow for precise sail trim and improved boat performance, made using unidirectional carbon fiber with a 'viper' pattern.
Head Box and Accessories
The head box, made from extruded aluminum, is designed for various functions and includes options for both fractional and masthead rigs. Accessories include brackets for instruments and lights, and backstay flickers.
Forestay Attachments and Halyard Routing
Seldén provides several systems for forestay attachments and halyard routing, ensuring proper load distribution and secure attachment. Halyard boxes are made from reinforced polyamide composite, with options for plain or ball bearing sheaves.
Specifications and Components
The document outlines various components and specifications for sailing systems, focusing on halyard boxes, leads, exits, and spreader brackets. It includes part numbers, materials, and dimensions for each component.
Halyard Systems
The document describes the functionality of halyard systems, emphasizing proper routing to reduce friction and prolong rope life. It details the design of Seldén halyard boxes and leads, made to handle high demands for functionality, strength, and lightweight construction.
Triple Combi Box
This section explains the triple combi box, which combines sheaves for spinnaker and jib halyards with the forestay attachment, highlighting the benefits of larger diameter sheaves for smooth, low-friction operation.
Halyard Routing and Exits
Proper halyard routing is crucial for effective sail handling, especially with jib furling systems. The document discusses the placement of halyard exits to prevent chafe and ensure smooth operation, with custom solutions available for specific deck layouts.
Spreaders and Brackets
The document provides detailed information on spreader brackets for different mast sections, including specifications for aluminum and carbon masts. It describes the design and functionality of spreader brackets, essential for rig support and minimizing windage.
Jumper Arrangements
Jumper arrangements are used to increase mast stiffness and are sometimes required for high hoist gennakers or spinnakers. The document includes specifications for jumper brackets and spreaders.
Attachment Systems
Details on attachment systems for lateral rigging, including backing plates and securing straps, are provided. The document also covers the use of GNAV systems and the attachment of lower diagonals.
Sail Feeding Systems
The document describes systems for feeding sails with sliders or luff ropes, including the use of pre-feeders and spring-loaded feeders to facilitate smooth hoisting and reefing.
Overview
The document provides detailed technical specifications and guidelines for various sailing equipment, including boom brackets, kicking straps, Rodkickers, Gnav systems, and spinnaker poles. It includes product descriptions, installation instructions, and performance parameters.
Boom Brackets
The document describes different types of boom brackets, including sliding boom brackets that fit into the sail groove and are specified in some class rules. Key dimensions and part numbers are provided for various components.
Kicking Straps
The kicking strap prevents the mainsail from lifting the boom too high when sailing downwind. It can be attached to a fixed or articulating toggle on the mast. The document provides specifications for different configurations and their operational parameters.
Rodkicker
The Seldén Rodkicker is a rigid vang that aids in sail handling during reefing. It can be equipped with a gas spring to lift the boom when the kicking strap is released. The document details the installation process and provides specifications for different Rodkicker models.
Gnav System
The Gnav is an innovative kicker system that provides more space in the cockpit by being fitted above the boom. It is suitable for sailing dinghies and keelboats, and the document outlines its operation and installation requirements.
Spinnaker Poles
The document covers both aluminum and carbon spinnaker poles, including their dimensions, weight, and material specifications. It also discusses the benefits of carbon poles, such as reduced weight for easier handling. Selection tables are provided to help choose the appropriate pole based on yacht displacement and righting moment.
Spinnaker Pole Kits
Seldén offers kits for building custom spinnaker poles, with detailed part numbers and assembly instructions. The kits include all necessary components, such as end fittings and fasteners.
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Catalog excerpts

Keelboat product catalogue A4-1

KEEL BOAT PRODUCT CATALOGUE

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Keelboat product catalogue A4-2

The information and specifications contained in this catalogue are subject to change without prior notice.

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Keelboat product catalogue A4-3

Furlex jib furling and reefing system Contents in alphabetical order Photo: Bernard Galeron. Dingo 2.

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Keelboat product catalogue A4-5

No matter what your preferences are, racing or cruising, the rig system can make a great contribution to your sailing experience. It has to be figured out in detail to be the perfect link between the boat and the sails. Seldén has become the world’s largest manufacturer of mast and rigging systems partly by allowing pure sailing experience be the driving force in the product development. Our focus is on race winning sail handling by attention to detail. Materials, quality control during production and a worldwide service organisation have made Seldén an obvious choice for thousands of sailors....

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Keelboat product catalogue A4-6

Photo: Seldén. Ohlson 8:8 Photo: Billy Black. CW Hood 32 Right from the start Heeling test today. Materials change. Good methods don’t. Heeling test in 1971. The righting moment of the boat is measured at 30° heel. Seldén was founded in 1960 and has grown from a small company into the world leader, with manufacturing in Europe, the USA and Asia. Precise, meticulous approach has always been a characteristic of Seldén. Our manufacturing methods, tools and instruments have been developed to meet the demands of large-scale, cost-effective production, but our focus on quality and function remains...

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Keelboat product catalogue A4-7

Photo: Richard Langdon/Ocean Images. Rustler 24 Give us the facts The key to a correct rig calculation is the quality of the input data at our disposal. This data consists of hard facts, plus what we can learn by listening very carefully when talking to the customer. The ”Seldén Rig Fact sheet” has proven to be a simple and effective way of gathering all the facts required to calculate the optimum mast, boom and standing rigging sizes. It is where you note the data on the type of rigging, the main dimensions of the sail plan, the location of the chain­­ plates and the righting moment of the boat...

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Keelboat product catalogue A4-8

All our standard rigs are custom made Seldén offers a full range of masts and rig equipment in both aluminium and carbon including booms, spinnaker poles and bow sprits. In addition, there are Rodkicker rigid vangs, furling systems, rig fittings and deck hardware. All rigs are custom-made, through every calculation and detail, for each individual boat type. We know how much depends on the rig, and there is no room for compromise.

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Keelboat product catalogue A4-9

MASTS Aluminium masts 10 Forestay attachment and halyard routing 18 Spreaders and spreader bracket 25 Attachment of lateral rigging 28

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Keelboat product catalogue A4-10

Aluminium masts Tradition and development From the very beginning in the 1960’s, Seldén produced a comprehensive range of aluminium yacht masts. Since then, the range has developed and expanded. The seven new keelboat sections feature a wealth of sophisticated and functional solutions, originating from the dinghy range and the yacht range. The sections are extruded and anodized and they are all available with a tapered top. When tapering the mast section, a wedge shaped piece of the section is cut out and the section is squeezed together and welded. This process does not affect the strength of...

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Keelboat product catalogue A4-11

Photo: Billy Black. CW Hood 32.

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Keelboat product catalogue A4-12

All Selden carbon masts use custom designed laminates to suit the particular application. The combination of meticulous care, long experience and exact specifications enable us to achieve optimum performance for minimum weight. The purpose is to make each individual boat go faster. The main characteristic of a carbon mast is the high longitudinal and lateral stiffness in relation to weight. The stiffness is customised to suit each individual boat and the crew can fine tune the prebend and the forestay tension to achieve a higher precision in the sail trim. The weight of a carbon mast is considerably...

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Keelboat product catalogue A4-14

The head box is manufactured from an extruded aluminium section and prepared for a variety of functions. An integrated groove in the top edge of the head box fitting helps in the installation of instrument brackets and backstay flicker, see page 16. To reduce the weight, the head box has four lightening holes. Clevis pin for back stay Dim., Art. no. mm

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Keelboat product catalogue A4-15

Long head box with block attachment for masthead spinnaker. Mast section

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Keelboat product catalogue A4-16

Mast section * cannot be combined with backstay flicker The backstay flicker lifts the backstay to avoid 508-303-01 508-334-01 damage to the leech of the sail when gybing Bracket for instruments and lights (0 65 mm). Bracket for Windex or VHF antenna

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Keelboat product catalogue A4-17

This head box fitting is also manufactured from an extruded aluminium section. It is mounted with a 15° angle and features two sheaves forward for jib/genoa halyards and two aft sheaves for main halyard and topping lift. light, Instrument base Mast section Bracket for Windex or Bracket for Tricolour anchor light incl. screws, Aluminium Carbon Art. no. Art. no. Forestay toggles and back stay toggles Wire dia., mm Art. no. Clevis pin dia., mm

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Keelboat product catalogue A4-18

Forestay attachments and halyard routing, fractional rig Backing plate for T-terminal The most common type of forestay attachments is a T-terminal in the top end of the wire and a backing plate in the mast. The backing plate is located inside the mast so the rig load is properly distributed on the mast section. The middle part of the fitting protrudes through the section forming the female part in the forestay attachment. The forestay has full articulation, which ensures correct alignment and provides a secure and low fatigue attachment. All boxes are made of a glass fibre reinforced polyamide...

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Keelboat product catalogue A4-19

Forestay Backing Halyard box with wear guard for spinnaker halyard, plain bearing sheave. Art. no. Halyard box with Halyard wear guard for box for jib spinnaker halyard, halyard ball bearing sheave. Art. no. Backing plate Halyard box for spinnaker halyard, plain bearing sheave. Art. no. 505-061-03 Halyard box for spinnaker halyard, ball bearing sheave. Art. no. 505-061-10 Backing Upper Halyard Lower Halyard Lower Halyard Double plate box for spinnaker box for spinnaker box for spinnaker Halyard Art. no. halyard, plain halyard, plain halyard, ball lead bearing sheave. bearing...

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All SELDÉN MAST catalogs and brochures

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  2. Seldén CXe45

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  3. Furlex TD

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  4. Cam Cleats

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  5. Carbon Spars

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.