An example of core building can be seen in figures as below:
Yarn = 1400 dtex
1 Ply = (1400 x 6) or (1400 x 10)
1 Core Bundle = [(1400 x 6) x 3]
The core is made of 7 bundles = [(1400x6) x 3] x 7

b) Sheath Construction
The job of the sheath is to protect the core and it will largely define the handling characteristics of the rope. The choice of how much material to utilise and the style of sheath is made by referring back to the usage characteristics of the rope that needs to be achieved. The overall performance of the sheath is optimised by the relative twist levels of the sheath yarns, the angle at which the sheath yarns are laid, the number of sheath yarns chosen and the configuration of the ‘braid’.

A braid can be explained as the process of configuring the sheath yarns around the core – it defines the sheath pattern and will influence the handling and durability of the rope. From this point we can choose between 32, 40 and 48 Carrier machines to braid the sheath in the way which complements the core best.

Enduro ropes use a 3 ply 1400 decitex yarn (1400 x 3) essentially a 4200 decitex sheath yarn in 2/2 braid.
Sprint ropes use a 3 ply 940 decitex yarn (940 x 3) essentially a 2820 decitex sheath yarn in a 2/2 braid.

All Infinity ropes use a regular 2 over 2 braid configuration i.e. two yarns laid over two yarns quite simply because this gives a stable and durable configuration for climbing ropes.

Another overriding factor at the heart of my Infinity designs has been to produce a round rope. This may seem common sense but a round rope means one that is solid to the touch and doesn’t deform and flatten in use. A round rope will give confidence in the hand, work more predictably in belay devices, knot cleanly and generally last longer. However, to achieve this is not as easy as it sounds and it is only from lots of trial and error as well as error years of experience, that we feel we have achieved it.

I hope this has given some insight into the basics of rope design and gives you confidence in our new brand and if you do go on to purchase one of our ropes then we would we welcome any feedback.