Prohaska Hitch Loop (approaching) 100%???

[James Petersen]

Am I the only one that is perturbed/excited/perplexed/surprised by the results of using this hitch as a loop? In my previous tests using this same line(http://igkt.net/sm/index.php?topic=4150.msg26174#msg26174), the line strength averaged around 22.6 kg., and the strongest knots had average strengths of 20-21 kg. and never did the line fail anywhere but adjacent to the knot.

Is this absolutely correct : i.p., that the line never failed
within the knot (which is some cases will leave
one with no-knot, sometimes bits of it) ?!  It's certainly
an easy-ish judgement to make, in that the knot remains,
intact.  And this assertion is made for the prior knots,
not (merely) the Prohgrip eye noose, yes?!

Actually, you are correct to question this statement. I should have said that "never did the line fail anywhere but at (as opposed to somewhere away from) the knot." Certain knots in my tests may have (likely) failed within the knots themselves -- especially those where nothing remained of the knot (but broken pieces of line) after failure. Those examples would include many of the bowline tests as well as all of the 1x2 Lazy Dog loops. But none failed any distance from the knot. Once again, thanks for your attention to detail.

[jimmyh]

So I did some dynamic testing.

The modified hitch I showed slipped pretty early 

I tried a few other variations - 4/2, 5/2, 5/3, 6/4, 6/1 and a couple with more turns as well - all tightly dressed. Some slipped a bit, but none of them broke right at the knot.

The 6/4 test broke >4" from either knot.

All my force data is corrupted by the scale bouncing all over the place when the cord snapped and losing an accurate reading 

I'll have to do some quasi-static testing so I can get real numbers next time