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Topic	Date	User
More acid rope testing	3-Jun-2012 At 10:48:36 AM	Richard Delaney
Message
Many things affect strength loss in knots. From my testing, I've found fig8 and bowline about the same - something between 55 and 75% of the unknotted rope strength. In a tug of war between the two on a 25-30yr old piece of 9mm rope, the rope broke in the fig 8 at 1000kg. I think the strength of the rope when new should have been 1800kg. That's 55%. Video at: http://www.youtube.com/watch?v=9skZ27YQd1g On a new piece of Sterling 11.1mm htp (which is an ultra low elongation polyester rope rated to 34kN), in separate tests, both broke at about 20kN - or 59%. Richard

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