What is the ideal sheath/core ratio on a climbing rope?

What is the ideal sheath/core ratio on a climbing rope?

Rob Kerrie's picture
By Rob Kerrie | Aug 5th 2015 |
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Dave Thexton's picture
Climbing Gear Geek
Aug 31st 2015
Hi Rob, The "ideal" sheath proportion will depend on what type of climbing you intend to use your rope for. Normal climbing ropes have a sheath:core ratio of around 2:5 but it does tend to vary. Ropes with a higher percentage of sheath will usually be more durable, but this comes at the cost of suppleness and stretch. If you are planning on using your rope for top roping or with groups, then a higher sheath percentage might be a priority for you. If you are looking for a performance rope for leading, then it should be less of a concern. Hope that helps, Dave

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