With the lack of threads on Amsteel failure I already figured that I won't break it. But since we are using it in a manner other than seemingly intended (putting knots in it) I'm curious how close to the limits we are coming. There doesn't seem to be much research available since most groups that look at this data just say not to use the rope for climbing related applications. I've see the video of the destructive test of the woopie and am wondering if there is anyone out there that has the time, means and ability to do this for the other potential failure points of the system. Maybe I'm just too curious.
northermark, I stand corrected. I see what you are talking about with the large radius while going around the cloth, but at the point where it crosses its self it looks like a 2:1 bend to me. Thus, in my mind a significant potential failure point.
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