When a rigging rope is exposed to dynamic loading, its ability to absorb energy matters.

Yale Polydyne is a high-strength, double-braided arborist rigging rope made with a polyester sleeve over a nylon core. Yale has engineered the construction so both fibres contribute to the rope’s performance, despite their different stretch characteristics.

The result is a long-wearing rope with more stretch through its working load range and high energy absorption, giving arborists a rigging line built to handle dynamic loading without degrading prematurely.

Extra stretch where it counts

Polydyne’s additional stretch within its working load range allows the rope to absorb more energy before reaching its working load. For dynamic rigging work, that stretch is an advantage. Polydyne has a working energy absorption rating of 576 ft lb/lb and an ultimate energy absorption rating of 11,187 ft lb/lb.

Two fibres working together

The nylon core provides the stretch and energy absorption, while the tough polyester sleeve gives Polydyne a durable, long-wearing exterior.

Rather than relying on one part of the rope, the double-braid construction allows both the core and sleeve to contribute.

Three diameters available

• 13 mm (1/2 in)

• 16 mm (5/8 in)

• 19 mm (3/4 in)

Why arborists choose Polydyne

Polydyne’s advantage is not breaking strength alone. It is the combination of strength, working-load stretch, energy absorption and a tough polyester sleeve that makes it a capable rope for demanding arborist rigging.

* Knots and abrupt bends significantly reduce the strength of all ropes and lower maximum working load.

** Working load is based on static or moderately dynamic lifting/pulling operations. Instantaneous changes in load, up or down, in excess of 10% of the rope’s rated working load constitute hazardous shock load and would void the normal working-load recommendation.