Forums: Climbing Information: The Lab: Re: [tugboat] Double figure Eight with "Yosemite" finish test request: Edit Log


Aug 1, 2011, 9:06 AM

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Registered: Dec 2, 2010
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Re: [tugboat] Double figure Eight with "Yosemite" finish test request
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Hey tug,

Hope you don't mind me replying here but I know some others might be interested too, and knot forces are always fascinating.

I attached a simple ms paint from your photo.

It was a bit hard to follow what bend or loop either of us is talking about, as it always is with knots when its just a bunch of loops.. So to make sure we are on the same page:

The red line in the photo is the load strand, enters the knot and goes around the red circle. The red circle gets a radius increase from the final tuck. The two blue lines are coming from the loop of the figure eight and appear to be cinched very tight.

As far as I know there are only two ways to tie a properly dressed figure eight, with the only differences being a swap in places of the two blue lines or the red line with its parallel strand. Neither of which will affect its strength according to the tests I have seen, of course with other knots that might not hold true.

So is my layout what you were saying as well? The first bend of the load strand in my eyes is the red circle however I could see if maybe it was deemed to be the 90 degree turn the red line takes when it crosses the blue lines...

It is interesting that the blue lines are cinched so tight in relation to the cinching of the red line around the red circle. Or perhaps that's just the image appearing that way..

No worries about incorrect analysis, there are few scientists in the world that study knots, comparatively speaking.. so its all laymen conjecture; perhaps through the viewpoint of engineers :)

ps. don't fret about majid, sometimes its a bit hard to figure out the way his mind works. He is a local celebrity though :D

(This post was edited by cellige on Aug 1, 2011, 9:10 AM)
Attachments: Untitled.jpg (109 KB)

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Post edited by cellige () on Aug 1, 2011, 9:10 AM

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