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Composite Rigging

Historically, composite rigging would only be found on top flight racing yachts however over the last few years more and more performance cruisers have taken the composite route, either opting to re rig in full or simply to select specific areas of use such as backstays and runners. Many yachts are now switching their rod rigging for composite standing rigging, benefiting from the increased performance that composites have to offer.

The Benefits of composite rigging are clear

  • Lightweight - Approximately 75% lighter than rod
  • Stronger - At least 40% stronger
  • Durable

 

Kevlar 49 Cables

Kevlar Cable

The Fibre within the cable is of truly parallel orientation which minimises stretch and maximises fatigue life. A Black or White Polythene cover is applied to the Kevlar under pressure and tension. This ensures that the cover stretches and contracts with the cable and does not ride up at the ends. The cover provides a barrier to the elements, protecting against UV and salt water. Kevlar cables are currently being used throughout the world for backstays, mainstays, runners, check stays, diagonals, inner forestays and baby stays. Outside the marine industry they are used as lifting and towing cables.

PBO Cables

PBO Cable

PBO cable is a fibre that offers high strength and low stretch but is less brittle than carbon. The resulting cable offers the same strength as cable with less stretch for half the cross sectional area of material, giving a cable of much smaller diameter and half the weight of cable for the same performance.

Composite Rigging Fittings

A range of distinctive light weight sockets are available for every application and can be found on racing yachts and superyachts all over the world.

Composite Socket Standard lightweight fittings have been extensively engineered to provide the full breaking strain of the cable. In fact, in tests it is common for the cable to fail midway and not at the terminal itself. This has been done by keeping the fibres parallel which also helps to increase fatigue life. The fittings are made from high strength 17/4/PH stainless steel, allowing thin walls whilst keeping weight down to a minimum. The sockets have a plastic cap that supports the cable and assists as a fatigue indicator. The cap houses a rubber “O” Ring that prevents the water getting in.

At the top end of the fitting there is a thread adaptor that allows the cables to be interfaced with most standard end fittings.

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