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Image: Kernmantle climbing rope dynamic Sterling 10.7mm internal yarns and plies

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Description: Internal structure of 10.7mm dynamic kernmantle climbing rope. This nylon rope is composed of a 40 strand "two-over-two" braided sheath and a core made from seven 3-ply yarns with a single green tracer strand running parallel to the core yarns. Note that four of the seven core yarns are S-twist (left-handed) and three are Z-twist (right-handed). In this image the three plies of the left-most core yarn are spread apart. Sample from trimmed end of a used climbing rope.
Title: Kernmantle climbing rope dynamic Sterling 10.7mm internal yarns and plies
Credit: Own work
Author: David J. Fred
Permission: See below, cc-by-sa-3.0, attribution required.
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes

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