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best cord for big bros? 24-Aug-2017 At 7:27:35 AM Dave_S

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On 23-Aug-2017 allnewmaterial wrote:
>Knots in dyneema and spectra weaken the cord significantly. (Anyone remember
>that DMM video where run a bunch of drop test onto knotted slings?)
>If slinging with this low-elongation stuff then you'd def' want to get
>it sewn.

Even if the 13.6kN strength of the cord is halved, that's still 6.8kN breaking strength, which is more than enough. And the elasticity of the cord is irrelevant unless you're clipping it straight to your harness and then taking a factor 2 fall directly onto it. As soon as dynamic climbing rope is part of the equation, the elasticities of all stiffer components, whether they are nylon or dyneema, become irrelevant.

Tying a loop of 5.5mm Dyneema cord through the Big Bro, using a triple fisherman's knot, is how the manufacturer recommends that you set it up.