Friday, May 7, 2010
End
That's all I have right now for my experiences but I can't wait to keep going with my dad this summer. Hope you enjoyed this blog and got a lot of information from it. Remember to Prepare for the worst; train to be the best!
Knot Strength
Knot strength is key to using the right knot. I have found the strength of each knot so you can see what would be the right choice for each part of your rappelling. I will start with the family of figure eights. The regular Figure Eight can hold a weight of 8,640 lbs., Figure Eight on a Bight holds 8,560 lbs., Figure Eight follow through holds 8,640 lbs., and the Double Loop Figure Eight holds the most at 8,820 lbs. Now for the Double Fisherman's knot will hold 8,440 lbs and the Water Knot holds 3,060 lbs. Though if you do a Water Knot-Double Loop it can hold 12,920lbs.! These are all the primary knots that you can use but some are a lot stronger than others.
Thursday, May 6, 2010
Webbing, Family of Figure Eights, and more.
In the family of figure eights there is the figure eight, figure eight on a bite, double loop figure eight and the follow through figure eight. The Figure Eight is used for a stopper knot at the end of you rappelling line so when you get to the end you don’t fall off. Also used as the beginning of the follow through figure eight. The Figure Eight on a bite and the follow through figure eight forms a loop for an anchor. Last of all the Double loop figure eight forms an loop for an anchor and is the strongest knot to form a loop. It is used for all anchors.
For rappelling we use a 1" webbing that is used for anchoring, harnesses, and typing patient in a stretcher. For the harness you use it to strap your legs into the belt. The knot for webbing is the Water Knot.
One of the last primary knots is the Double Fisherman's knot and the Prusik knot. The Double Fisherman's knot is used to tie the ends of the rope and make it into the loop forming a Prusik knot. The Prusik know is then used to be a brake for the belay line or tag line. The are most of the knots.
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