Volvo Ocean 70 America’s Cup AC72 Sodebo Hydroptere

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Running rigging rope,real performance is on the inside.

Stretch and creep: why is this vital?

“ It’s important to have lines that aren’t going to stretch or break, are thin enough to run through the systems, and strong enough to take the extrememly high loads on the boats we race around the world.”

The key performance criteria.

Good responsiveness and grip to give precise

and split-second control in all wind

speeds.

SK99

SK78

Lightweight by reducing weight at top

of the mast, and smaller ropedimensions.

Safe and reliableperformance,

by a high break load and good UV

resistance.

Achieving full speed under total control requires ropes with minimal elongation. There are three ways ropes elongate:

How do you select the right rope, with the right technology, for each task on a boat? There are three key performance criteria:

Material technology comparison (number of stars means increased performance)

Dyneema® SK99

Dyneema® SK78

Dyneema® DM20

Dyneema® SK38

Polyester

Perfect fit for Best in class racing performance

Industry standard for running rigging lines

Standing rigging and ropes under constant tension

Dinghy’s and club racers

Low end pleasure marine market

Lightweight at the same strength

★★★★★ ★★★★ ★★★ ★★ ★

Responsiveness ★★★★★ ★★★★ ★★★ ★★ ★

Stretch (reversible elongation)

★★★★★ ★★★★★ ★★★★★ ★★★ ★

Creep (irreversible elongation)

★★★ ★★★ ★★★★★ ★★ ★★★★★

for ultimate performance racing

as the industry standard

Running rigging made with Dyneema® fiber has an outstanding track record of victories: from the America’s Cup to the Volvo Ocean Race, Olympic medalists race and many more with Dyneema® technology.

Hayden Goodrick, main trim on board of US One team for World match racing tour.

Dyneema®: a record breaker

Construction: There are many ways to construct a rope. Depending on the construc-tion and whether the fibers are used in the most optimal way, you see elonga-tion in a rope. Pre-stretching will reduce the constructional elongation of a rope.

Stretch of the fiber (elastic elongation): depending on the stiffness of the fiber, the rope elongates. The fibers in a rope elongate under tension and return to initial length after the load is released. The stretch is reversible.

Creep: creep is an irreversible elon-gation of the fiber. It occurs when a rope is under constant load over time, at a certain temperature. Creep is depend-ent on fiber type, tension, time and temperature and can have a negative effect on a rope’s lifetime.

Why Dyneema®?Dyneema® is the world’s strongest fiber, the benchmark for rigging lines.

Real performance is inside the rope:On the outside many ropes lookthe same. Most of the runningriggings have a cover forabrasion resistance andgrip, but it is the core thattakes the load.

The fiber used in the rope could be pre-stretchedand a coating could beapplied. The core can beconstructed with a hybridof different fibers.

Cover - important for grip and rope durability (resistance to abrasion

and UV light)

Core - taking the load

Rope cross-section

Rope selection checklist:? Pre-stretched

? Coated? 100% Dyneema® in the core

? Construction of the rope? Cover material

? Fiber type

When selecting a rope, always check the construction and technologies used.

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