Minimizing weight by balancing loads on 2 legs
Under influence of Sgt Rock's recent thread on pushing the limits:
Is a loopie* sling the minimum-weight constrictor? It would seem so because the there is no cordage wasted on a bury for an eye.
There are always two legs always carrying the load, so the cord strength can be halved*, and only enough tail is required to keep the loop from coming apart at full length, or, if desired, to form a half-hitch.
What is wrong with this analysis?
***Another citation to come.
*In a loopie, the bury is inserted from the other direction.
**In a whoopie sling, most of the time the load is being carried on two legs. In some destructive tests the weak point has been in the length of cord between splice-and-bury for the eye and bury / sleeve. In other words that length we try to minimize where where just one cord carries the load.
***Another HF member has recently put forward this suggestion in another context. No, they would be two: Turnerminator , who appears here later, and gd___ both of whom led me here to wonder afresh about alternatives to current standard practice.
and the two shall be as one
I've seen your question or assertion about two legs splitting the load before and hoped a mechanical engineer could weigh in. Where's Knotty or Rapt when needed??? (or others whose identities I don't know...)
The question / observation I have for said engineer is that you have two legs...up to the point where they join---top of the loop, over the webbing or whatever. What is the strain on that join point? The cord system is only as strong as the weakest point.
A world turned upside down
Yes, lets have a real engineer here, or I may have to read papers on testing protocols from the Cordage Institute and discern what the angels do at the point of the pin--break faith, or split up and share the load -- and how the sharpness of the anvils used in breakage strength testing affects the measurements of breaking strength.
But, the load splitting is arithmetic, Professor. They won't let my daughter stay in the undergrad engineering school at Champagne Banana if she does other than choose that answer on the program pre-test. (Q 34. Correct answer for undergraduates is "A". [50-50 load sharing] At issue is if "E" [none of the above] is the correct answer for the same course taught to the graduate students, who are sooner to be in the real world.)
Worse, I'll join in Sgt Rock's fun and propose how everyone who felt safe with Dynaglide can split the load between two legs of 1.8mm 550lb breaking strength Zing-It loopies and be more secure than with a Dynaglide whoopie sling. (Will DemostiX do anything to restore Sampson's monopoly on HF member business?)