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  1. #11
    Member Elessar's Avatar
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    Seems like this is THE place to hang out! hahaha

  2. #12
    Senior Member SweetLou's Avatar
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    Quote Originally Posted by BER View Post
    Dynaglide: Made by New England Ropes using Dyneema SK-75. Also 12 strand and spliceable. Only available in bright orange and green with slick/waxy coating. Only available in 2mm diameter. STS-12-75 (also made by NE Ropes) is a similar 2mm cord to Dynaglide but with a different coating more like Amsteel.

    Lash-it/Zing-it: Made by Samson of Dyneema. I believe only 8 strand (might be wrong here). Spliceable. Only two diameters each (1.8 and 2.2mm). Lash-it is gray. Zing-it is yellow. Neither has a strength rating with a high enough safety rating for hammock hanging, but both are good for tarp lines and such.
    If both Lash-it and Dynaglide are made of the same material, why is the 2.2 mm Lash-it so much weaker than the 2mm Dynaglide?

  3. #13
    Senior Member swankfly's Avatar
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    More strands?

  4. #14
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    Quote Originally Posted by SweetLou View Post
    If both Lash-it and Dynaglide are made of the same material, why is the 2.2 mm Lash-it so much weaker than the 2mm Dynaglide?
    Dude, I don't know everything!
    I suspect that it is because dynaglide has more strands and is pre stretched before coating. But that's a guess.

  5. #15
    Moderator Nighthauk's Avatar
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    Dynaglide also comes in a 1.8mm diameter and has a 1000lbs capacity.
    Husband, Father, and Friend.
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  6. #16
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    Quote Originally Posted by Jiffiboy View Post
    How do you know all this dude?
    I wanted a cord like dynaglide, but without the bright color. So I looked at a lot of rope companies, did a lot of reading online. Sometimes I get a bit obsessed...

  7. #17
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    Quote Originally Posted by Nighthauk View Post
    Dynaglide also comes in a 1.8mm diameter and has a 1000lbs capacity.
    New England Ropes only lists 2mm dynaglide on their website: here. I have also seen some vendors list it at 1.8mm, but I think it is the same thing. NER actually lists it as 1/16" (2mm), but 1/16"=1.5875mm. I think there is some liberal rounding, as our brother Demostix has pointed out in other threads.
    Last edited by BER; 08-21-2012 at 20:38.

  8. #18
    Senior Member SweetLou's Avatar
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    Quote Originally Posted by BER View Post
    Dude, I don't know everything!
    I suspect that it is because dynaglide has more strands and is pre stretched before coating. But that's a guess.
    Well, that's it! I am going to a different forum Just kidding, I like it here too much.

  9. #19
    Moderator Nighthauk's Avatar
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    This what I saw from a company that I order arborist equipment from. http://www.sherrilltree.com/Professi...hrowline-1-8mm
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  10. #20
    Senior Member DemostiX's Avatar
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    Quote Originally Posted by SweetLou View Post
    If both Lash-it and Dynaglide are made of the same material, why is the 2.2 mm Lash-it so much weaker than the 2mm Dynaglide?
    Zing It 2.2mm weighs 2.8 oz per 100 ft Claimed bs 580-650 lb
    Dynaglide weights 2.6 oz per 100ft Claimed bs 1000 lb
    The 1.8mmZing-It weighs one third less, and has a breaking strength of 1/3 less.

    Could be fraction of low-strength coating on the Zing-It is higher. These are throw-lines, optimized for arborists shooting bags through leaves without snagging.

    In fact, the strength per weight of Lash-It (and Zing-it) is lower than for other Samson Amsteel Blue products. The claimed bs / wt ratio of Dynaglide is in line with other NE Ropes products of larger sizes

    Dyneema has a higher breaking strength (bs) if it has been "pre-stretched", which both gets constructional looseness out, and results in about a 10% increase in ultimate bs. Field stressing the cord to 50% of its ultimate BS does this. One seller of high-peformance cordage claims to do this to the fiber itself.

    Eight years ago Samson issued a technical paper on the cordage of a then- competitor, Puget Sound Ropes (PS). All of PS Dyneema-based line was rated as much stronger than comparable Samson line by 20%. "Pre-stretching" was how PS claimed to have done it. Samson engineers were surprised that high BS was achieved with SK-75 fiber.Then, they were not surprised when the testing turned to fatigue resistance. In fact all Dyneema-based line gets stronger after some use, about 10% stronger if stressed to 50% of its breaking strength, so there is something to pre-stressing. But, all line wears out, gets fatigued. The Samson testing showed the PS line to suffer fatigue failure much earlier than their own Amsteel rope. Commercial users were not much longer interested in cordage with a shorter life and Puget Sound Ropes isn't around any longer.

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