/ prusik rope diameter advice please
I was thinking of getting some rope to make a short and regular length prusik loop from, something like 5mm static.
At the moment the rope Ive got is a 10mm Edelrid dynamic and I was wondering if the 5mm would be suitable to use if I needed to abseil off my rope doubled up through a belay plate using a french prusik around both ropes, or would I need something wider diameter for this?
Sorry for such a long question!
5mm tends to grip a bit too fiercely. And 6mm not quite enough on single 9mm ropes. You can get 5.5mm sometimes. Grab it if you see it! If forced to choose, I would go for 6mm - it lasts a bit longer before it goes stiff and slippery.
For me, if my life is hanging on a prussik it's got to be 6mm or more.
Yes, as someone else says. But I've not abbed much on double 10mm so I won't guess. But this topic is very valid. The cord, how thick, how stiff, how many turns, makes a huge difference to how well the system works and it's well worth getting it right.
Diameter aside, softer cord bites much better than stiff chord.
For backing up an ab, or prussiking up a rope strength isn't an issue.
I carry one of each.
More importantly, practice using them before you're stuck at the bottom of a crag!
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