The point of the device is to use friction to slow the fall gradually. If the device stays put then its not working. You are meant to put a knot below the device to stop it.
I agree but friction does not mean that the rope has to slide down with almost no resistance. Consider that I weigh 60Kg and the rope with the energy absorber (I mean with a no falling body) should hold my weight without slipping otherwise the impact at the end of the energy absorber would be too strong. I hope I was clear enough. Cheers
Hello, considering the fact that the rope (the 2 sections that go from the shock absorber to the carabiner) on average does not exceed 130cm, I believe that the lengthening of a dynamic does not change almost anything. Also in consideration of the fact that falls on a via ferrata involve a much higher factor than a fall in climbing. In climbing the rope is much longer and no shock absorber is used so dynamics are essential. In Ferrata, the rope is very short and the shock absorber must be used. The elongation, and therefore dissipation, of the rope, is minimal so I also use static. It must be clear that it is better not to fall on the via Ferrata. Conclusion: Static or Dynamic doesn't make a big difference considering that the rope is quite short. About the Shock Absorber. In this test, I used a 9mm rope but... IMPORTANT: it's important to notice that the configuration changes according to the type of rope and the diameter of the rope. I weigh 60 kg (132lbs) and for example, with a 10.5mm rope I use the first configuration and not the second one and I use 3 holes and not 5 and I leave 2 meters of free rope with a knot at the end (or tied to a carabiner hooked to the harness.) This shock-absorbing system must be configured according to the user and the rope used. If I used the second video configuration (5 holes) for my 60Kg the braking would be too strong and the shock absorption would not be enough. I always recommend doing a test to be able to make an optimal configuration. Cheers
The point of the device is to use friction to slow the fall gradually. If the device stays put then its not working. You are meant to put a knot below the device to stop it.
I agree but friction does not mean that the rope has to slide down with almost no resistance. Consider that I weigh 60Kg and the rope with the energy absorber (I mean with a no falling body) should hold my weight without slipping otherwise the impact at the end of the energy absorber would be too strong. I hope I was clear enough. Cheers
Thanks for video. What kind of rope do you use? Static or dynamic?
Hello, considering the fact that the rope (the 2 sections that go from the shock absorber to the carabiner) on average does not exceed 130cm, I believe that the lengthening of a dynamic does not change almost anything. Also in consideration of the fact that falls on a via ferrata involve a much higher factor than a fall in climbing. In climbing the rope is much longer and no shock absorber is used so dynamics are essential. In Ferrata, the rope is very short and the shock absorber must be used. The elongation, and therefore dissipation, of the rope, is minimal so I also use static. It must be clear that it is better not to fall on the via Ferrata.
Conclusion: Static or Dynamic doesn't make a big difference considering that the rope is quite short. About the Shock Absorber. In this test, I used a 9mm rope but...
IMPORTANT: it's important to notice that the configuration changes according to the type of rope and the diameter of the rope. I weigh 60 kg (132lbs) and for example, with a 10.5mm rope I use the first configuration and not the second one and I use 3 holes and not 5 and I leave 2 meters of free rope with a knot at the end (or tied to a carabiner hooked to the harness.)
This shock-absorbing system must be configured according to the user and the rope used. If I used the second video configuration (5 holes) for my 60Kg the braking would be too strong and the shock absorption would not be enough.
I always recommend doing a test to be able to make an optimal configuration.
Cheers
soluzione interessante, ora è da calcolare la forza frenante