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Old 09-10-2005, 06:37 AM   #2
Jesse Woody
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Join Date: Jul 2005
Location: Orange  Virginia
Posts: 915
If you are using climbing biners, then two is more than enough to hold the wieght of a person on the rope. Most regular locking biners that are climbing certified run around 24kn on the long axis, which is about 5395# of force. Having two is good for redundancy, but it's by no means essential for strength. As for the friction issue...depending on the type of rope, friction would only be an issue if you were running the rope through the biner, such as pulling slack, and even then it's not a big deal, as this is done repeatedly in climbing with little or no damage to the rope itself. I would check with the manufacture of the rope to make sure of their individual specs, but I don't think you have much to worry about.
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