Post
by GreyCoyote » Thu Jul 31, 2014 6:16 pm
Michelle;
If you look at the construction of that tightener, you will see the more load you put on it, the tighter it grips. There is no risk of slippage with increasing load. The only issue is under very light loads. Then it can slip. It's very much like one of those Chinese finger-puzzles: the more you pull on them, the tighter it grips. FWIW, there are fittings designed for steel cable that use this same approach and are not very much larger. These are rated in TONS, and the failure comes from the cable reaching its limits, not the tightener/fitting.
In this particularl design the failure point is where the outer "loop" attaches to the body. This loop, under extreme load, can separate from the body. It isn't swaged or crimped. It is just stuck in a hole in the side of the body with a slight inward force holding it there. The failure mechanism involves this loop expanding and walking out of the holes in the body. Where this occurs on the load curve is anyones guess, but I can tell you that point will be a couple of hundred pounds or more.
The biggest failure point is with the cord itself. As it is repeatedly compressed by the action of the tightener, the rope fibers get crunched and broken, and it finally fails right at the end of the tightener. This shouldn't be a problem on the playa.
Hope this helps...
"To sum up my compassion level, I think we should feed the unwanted animals to the homeless. Or visa versa. Too much attention and money is spent on both."
(A Beautiful Mind)