Dual Tether Ropes

[Brocky]

It has two separate splices, one for each eye.
I’ve recently changed my mind about a full bury having twice the strength of the rope. It may near the eye, as both sides are being loaded, but the further away the ”cover” starts to stretch less, while the “core” continues to take the load, to the point it takes all the load and parts at its break strength.

Now you've got me wondering about the working load limit on my 8mm oplux bridge. All I can seem to find is the max break strength of 5400lbs, but can't find anything on working load limits.

BT

The break strength of Oplux is 5440 lbs from Sterling’s website, there has to be some strength loss with sewn eyes, which I’m assuming you have.

 

[TreeRecon]

@Black Titan Brocky listed 5440mbs above. Then it's a 544WLL for your Oplux. WLL is designed to account for knots, splices etc.

 

[Black Titan]

@Black Titan Brocky listed 5440mbs above. Then it's a 544WLL for your Oplux. WLL is designed to account for knots, splices etc.

Thank you for that info. Good to know!

BT

 

[Brocky]

The 554 lbs is for the rope itself, reduction in strength from using, say a knot to form an eye, has to be subtracted from the 554. The very best Oplux could retain would be 50%.

 

[TreeRecon]

The 554 lbs is for the rope itself, reduction in strength from using, say a knot to form an eye, has to be subtracted from the 554. The very best Oplux could retain would be 50%.

If you start with 5400mbs, the 10% for life safety takes into consideration strength loss from: Usage, knots, splices etc. Btw, I confirmed this with the head of training at IRATA at one time.

If what you're saying was true, people would be breaking ropes from basal anchoring.