Both the above ropes are described as multi-strand rope constructions and selected for their Torque and Turn properties to prevent the load rotating or the hook twisting, the Dyform 18 rope being described as a ‘Rotational Resistant’ rope and the Dyform 34LR described as a ‘Low Rotational’ rope. The Torque and Turn values for these ropes are given below, the properties of the Dyform 34LR being significantly better than those of the Dyform 18. In addition, the Dyform 34LR rope achieves an increase in breaking strength of approximately 10%.
Bridon Dyform 18 – Torque 3.8% - Turn 2.6 degrees per rope lay
Bridon Dyform 34LR – Torque 0.76% - Turn 0.2 degrees per rope lay