If a span is 180 degrees it has infinite force on it. Even zipline and electric wires have sag in them. So 170 degrees is 5x the force as what is applied in the middle. I thought an American Death Triangle put magical amounts of forces on the bolts and anchor material since the top line is 180 degrees. Come to find out it is not that bad. If you want to read about the math, check out https://overtheedgerescue.com/rope-rescue/american-death-triangle/
Our Data is on our blog https://www.hownot2.com/post/american-death-triangle
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The Myth
01:11 Setting up
04:09 1st Test
06:15 2nd Test
07:23 3rd Test
10:25 4th Test
11:46 Testing Rappels Wide
16:35 Testing Rappels Normal
19:00 Giant Sliding X
20:56 Conclusion
23:24 How to build a proper anchor