dyneema chain

[Breaking Waves]

I found this sort of interesting. . . . . https://www.dsm.com/dyneema/en_GB/ap...ic-chains.html

Links made from multiple wraps of dyneema webbing sewn shut. The primary commercial purpose seems to be to give you lots of lashing/connection points.

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[SeaStory]

I don't think that is going to work with my windlass...

[Panope]

That is interesting, BW. Thanks for sharing.

I am in the process of doing something similar, but with longer 'links'. The goal is a Dyneema anchor rode (for anchor testing only) that will need to have a connection every 16 feet or so. Was planning on using single line with eye splices. However, if this chain Dyneema product is economical, that might be a nice option.

Steve

[jmh2002]

Originally Posted by Breaking Waves

I found this sort of interesting. . . . .

Me too

[StuM]

Interestingly, it's constructed as a multi-layered Moebius strip which means that one end is conpletely buried in the middle of all of the loops and only the other end is exposed (on either the inside or the ouside of the link depending on how the loop is rotated). In effect, you've got a tremendous amount of "bury"

[Alan Mighty]

https://www.innovationintextiles.com...-with-dyneema/

[Alan Mighty]

See Marissen et al. Weibull Statistics Strength Investigation of Synthetic Link Chains Made from Ultra-Strong Polyethylene Fibers, in Materials Sciences and Applications (2016):

https://pdfs.semanticscholar.org/5c4...c64e84985b.pdf

[Alan Mighty]

Wienke and Marissen's US patent US9404558:

[Alan Mighty]

The Bosman et al. 2013 patent on the moebius links and their manufacture:

[Breaking Waves]

I sewed a (short) section of one of these. It tested pretty well (you can basically make them arbitrarily strong - up to sewing machine thickness constraint) and would be a real consideration in an application where you needed a lot of lashing/attachment points. However, it is a decent about of work, similar to building a series drogue.