Seems like this is THE place to hang out! hahaha
Seems like this is THE place to hang out! hahaha
More strands?
Dynaglide also comes in a 1.8mm diameter and has a 1000lbs capacity.
Husband, Father, and Friend.
Scout Master and Cub Master for Troop/Pack 705 of
Chesterfield
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.
This what I saw from a company that I order arborist equipment from. http://www.sherrilltree.com/Professi...hrowline-1-8mm
Husband, Father, and Friend.
Scout Master and Cub Master for Troop/Pack 705 of
Chesterfield
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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