- Location
- Chattanooga
I had about 30' of unsed 10mm PMI EzBend rope laying around so I thought I'd put a ZB in it and pull it to failure.
Nothin' really fancy here, just measure the force it takes to break it.
The ZB failed at 3800 lbs in 10mm PMI EzBend rope. This rope is rated right at 6000 lbs. That suggests that the ZB broke at 63% of the rope's strength. Of course that assumes this particular sample of rope has a strength of 6000 lbs. But, I don't have any way to measure the breaking strength because it takes special termination gear that I don't have.
So, for a comparison, I took two more short sections of the rope, tied them togther with an F8 'trace' bend (as Blinky calls it, I like the name), and started pulling. The F8 trace failed at 3982 lbs or about 66% of the rope's strength.
BTW, both knots failed at the same place - at the first bend/contact of the knot.
Shame the rope couldn't have been some kind of arborist rope, but I didn't have any short lengths available.
Nothin' really fancy here, just measure the force it takes to break it.
The ZB failed at 3800 lbs in 10mm PMI EzBend rope. This rope is rated right at 6000 lbs. That suggests that the ZB broke at 63% of the rope's strength. Of course that assumes this particular sample of rope has a strength of 6000 lbs. But, I don't have any way to measure the breaking strength because it takes special termination gear that I don't have.
So, for a comparison, I took two more short sections of the rope, tied them togther with an F8 'trace' bend (as Blinky calls it, I like the name), and started pulling. The F8 trace failed at 3982 lbs or about 66% of the rope's strength.
BTW, both knots failed at the same place - at the first bend/contact of the knot.
Shame the rope couldn't have been some kind of arborist rope, but I didn't have any short lengths available.
