Crossing knot, a foundamental knotting tool to build jam-proof knots

[Kost_Greg]

Transposed munter X bowline

I come back with a more circumstantial definition of this remarkable bowline structure, than the one i had given in another thread as a three collar virtual bowline.

The reasoning behind this preference of demonstrating the X variation first, is my strong belief that the transposed munter X core is more releasable and pliable under heavy stress.

Of course , i'm refering to a transposed munter nipping structure, whereon the loop munter component is a direct SP continuation, while the crossing knot munter component is a direct, out going line continuation, inversely compared to a conventional munter scheme.

So, the X component orientation formulates a long connection line with no sharp curvature between the two nipping structure collars, while acting like a pressure valve for nub decompression.

It's also of note, that this very long line, if assumed that it is the weak link of the system when being subjected to deformation stretching, actually contributes to the structural integrity and the stability of the core, because it is being constricted, lying in between the bowline collar and the SP.

These three access points to interact with this nub under heavy loading conditions, in a system with two lines of defence against returning line slippage, build high expectations for the knot's jamming profile.

[Andreas]

Highlight.

Congrats Kostas


 

[Kost_Greg]

Thanks Andreas for your feedback!

Nonetheless, i think  i have to demonstrate the non-X variation too, which is the one described as transposed munter bowline.

Indeed, it forms a more compact core, but there is a sharp carvature point between the two nipping structure collars, which appears to accumulate all the energy from the tensile forces.

I recall that Xarax had detected some sort of clove action at his first inspection, which would rather make untying quite difficult for loadings beyond 40% of MBS.
This was also confirmed by Alan Lee, but for the inline version of this profile.

However, it is feasible to make this core more pliable with a simple maneuver.

1. Get the TIB variant by threading the tail down through the bowline collar.

2. Transpose the knot, which means to load it from the tail side.

Doing so, the knot operates as a Carrick (Αbok#1439) component, or in other words, a crossing knot based loop, which is way more  releasable at heavy stress.

To track down the Carrick pattern (Abok #1439 derived eyeknot), just push one of the two parallel SPs out of the collar.

One might think of it as another way to make a Carrick knot, tiable in the bight.