I just put whoopie slings on now I hear about ucrs. Is there a benefit of one over the other
Did not read all 88 pages so if t is explained direct me to proper page
Thanks
I just put whoopie slings on now I hear about ucrs. Is there a benefit of one over the other
Did not read all 88 pages so if t is explained direct me to proper page
Thanks
Last edited by bookmn0926; 05-12-2013 at 23:07.
Finally got a good splicing tool going and have been working on my whoopies. Did a quick continuous loop to do a little test, I thought I had made a bit of a mistake with the 1/8 amsteel, but then during my test I realized that taper will be very important. Now for a glass of wine and some more splicing. Love this stuff!!!
What is the lifespan of 7/64th amsteel blue whoopie sling?
I guess the obvious answer is....just before they snap, but I'd like to avoid that.
Mine really aren't what I'd consider old and over-used, but right at the bury the weave seems to look a little suspicious.
Leonard Outdoors Youtube.com/drleonar
Been trying to get this to work with 7/64th AmSteel for the past hour and cannot jerry rig it with the supplies I have, ugh! 'Bout to bust out the credit card, but that doesn't help for my hammock camping tomorrow. :/
this thread has grown, exponentially, and it may be hard to find bits n pieces that you need, to make your journey easier & more fun
here, again, are a couple links that may ease your frustration(they did for me), once the process is mastered, you will treat it as recreation, rather than being adversarial:
12min± of the process(by the manufacturer) using larger material allows you to view easier
http://www.jamestowndistributors.com...teel_blue_7_64
14 min±(by one of us) using 7/64, actually making WHOOPIE SLING
https://www.hammockforums.net/forum/...ad.php?t=70189
floral wire, brass wire, piano wire, metal guitar string, weed eater string, welding wire... have all been listed as material that works for this process
hope you find the switch that turns your light on
sw
"we are the people our parents warned us about" jb
steve
Thanks guys, will be giving this another try today if I can get some more materials or next week.
I was wondering this myself. I have 4 sets of WS, and to some degree all of them have come unwound a bit near the adj loop bury entry & exit points - undoubtedly from repeated folding and wadding up.
I saw a pic in a thread somewhere that had heatshrink (carefully) applied around them at these points, which seems like a pretty good idea. The strands themselves are in fine condition (sans colored dye by this point), but it still made me wonder if the loosening of the braid would have any impact on the overall strength rating.
Cordage is braided in order to improve handling. Handling includes management of risk to tangling and variation in load which would break strands and so diminish the strength of the cord.
So, the answer is: No, the WS is not diminished in its load capacity by the appearance of eyes between the strands and a loosening of the braiding.
Why does it occur? I suspect because, as has been shown in an arborist forum, the constriction forces are exponentially distributed -- not using the word "exponential" hyperbolically -- over the length of the constrictor. You can change the exponent on the function by working your fingers and "milking" the constrictor. But there will still be an exponential decay in the constriction, the first part seeing the load constricting most. This results in a permanent lengthening of the strands where the load is greatest, and it comes from two sources. First, there is the squeezing out of open space and maximal tightening of the braid where constriction is greatest. Second, there is greater expansion of eyes in the braid is due to permanent stretching, called "creep", of the strands. Dyneema is prone to creep. Manila fiber does not creep.
Why I am not concerned: Whoopie slings operate in the same way that bog-standard eye-splices do, and those eye-splices are rated by the cordage makers, at near 100% of cordage strength, with no statement that they wear out over time and use. I think the open are more exposed to hazards of snagging, and of being singled out, so to speak, for any harm, but the sum strength of all of them is little diminished.
That said:
All cordage has a lifespan which is shortened by use under loads approaching breaking strength. Fashion here for some is to operate with safety margins that are smaller than recommended. That results in more creep, --permanent elongation during normal use at higher fractions of breaking strength-- which eventually will weaken the cord and reduce its breaking strength. When? Maybe only after tens of thousands or load cycles.
And: Some whittle with a knife. I spend idle time with a pick, closing down the eyes by loosening the very tight braid in the adjacent portions of the constrictor.
Last edited by DemostiX; 06-13-2013 at 01:33.
Awesome post! I was always confused by these things..
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