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post #12 of Old 10-30-2017 Thread Starter
pdqaltair
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Re: What if No-Chain?

Quote:
Originally Posted by Noelex View Post
There are some cheap Dyneema materials (or more correctly HMWPE as Dyneema is a trade name) appearing on the market because the Dyneema patents are expiring. Acera is one such rope.

These show a lot of promise. The main advantage is better chafe protection than traditional fibre rodes. There are problems that need to be overcome. It floats and the lack of elasticity means a snubber is needed. Attaching the snubber is not easy....
I've been doing some side-to-side chafe testing on abrasive materials, and believe it or not, Dyneema single braids don't do much better than nylon and perhaps not as well as polyester. In a sense, the Dyneema chafe thing seems to be an exaggeration. End to end it runs smoothly, low friction, and thus does not chafe, but side to side across a rock is completely different. This is part the result of a loose construction; tight weaves like WR-2 are much more resistant.

Thus Dyneema may be a part of the answer, but it will need a chafe cover.

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