Author Topic: Ezelius-loop - a novel adjustable knot  (Read 445 times)

Ezelius

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Re: Ezelius-loop - a novel adjustable knot
« Reply #15 on: April 04, 2020, 10:20:32 AM »
Dan_Lehman, Thank's for testing the knot on different ropes. The knot can be tightened by pulling two of the cords. I do that in order to get the wanted grip. Also, if possible it would be interesting to know if any alternative knot would perform better for a specific rope.

Dan_Lehman

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Re: Ezelius-loop - a novel adjustable knot
« Reply #16 on: April 04, 2020, 09:51:32 PM »
if any alternative knot would perform better for a specific rope.

Blake's hitch" (aka per me "ProhGrip") is what worked best
in one test of kermantle ropes; one might want to adjust
the standard number of wraps, adding more around the
tail in really stiff rope, or around the end beyond the tail
if slipperiness seems to be in need of redress.


--dl*
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Ezelius

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Re: Ezelius-loop - a novel adjustable knot
« Reply #17 on: April 05, 2020, 12:18:39 PM »
Dear Dan Lehman,

I tried Blake's hitch on my Simond 6 mm 9 kN polyamide cordelette. Both the 4/2 and 5/3 variant functioned. On this rope Blake's hitch and the Ezelius adustable eye seem comparable. Thank you for helping me out!

Yours Sincerely, Mr Ezelius

https://en.wikipedia.org/wiki/Blake%27s_hitch
« Last Edit: April 05, 2020, 01:10:16 PM by Ezelius »

Ezelius

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Re: Ezelius-loop - a novel adjustable knot
« Reply #18 on: April 05, 2020, 04:07:14 PM »
I tried Blake's hitch on Edelrid Powerloc expert SP 7mm 14kN polyamide cord. It is a little tricky at first to handle the knot while tightening it (to set it), it has a tendency to undress. But practice makes it easier. The 4/2 was a little weaker, and the 5/3 similar in grip strength as the Ezelius eye. For this rope I think I would prefer the Ezelius eye because it more straightforward to tighten and because there seems to be some possibility for the loose strand (tail, end) to work its way out of the knot in some circumstances.

alanleeknots

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Re: Ezelius-loop - a novel adjustable knot
« Reply #19 on: April 06, 2020, 02:02:07 AM »
Hi All. This is a non slip, jam resistance adjustable loop. The collar near standing part have to dress it narrow.
          And it good for any kinds of ropes.  谢谢 alanleeknot.

Dan_Lehman

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Re: Ezelius-loop - a novel adjustable knot
« Reply #20 on: April 06, 2020, 08:06:44 PM »
adjustable loop.
But only for an anticipated amount of adjustment,
with a tail reflecting the range of this, on the smaller
sizes.

--dl*
====

alanleeknots

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Re: Ezelius-loop - a novel adjustable knot
« Reply #21 on: April 06, 2020, 11:27:13 PM »

Quote
But only for an anticipated amount of adjustment,
with a tail reflecting the range of this, on the smaller
sizes.

         Hmmm, ? alanleeknots at you-tube.

tsik_lestat

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Re: Ezelius-loop - a novel adjustable knot
« Reply #22 on: April 07, 2020, 01:00:31 PM »
@ Mr Alan Lee

I am not sure if you have noticed it, your nipping structure component, is a figure eight in this particular geometry, link/first image https://igkt.net/sm/index.php?topic=6622.msg44062#msg44062.

So, another decent implementation of this configuration, a figure eight based adjustable loop, where its delivering friction, is quite enough to lock/block the tail from slipping. Plus the jam resistance too. I didn't see that coming! ;)

Thanks for bringing it in  8).

« Last Edit: April 07, 2020, 01:10:35 PM by tsik_lestat »
Going knots

alanleeknots

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Re: Ezelius-loop - a novel adjustable knot
« Reply #23 on: April 07, 2020, 08:04:15 PM »
@ tsik_lestat

    Thanks for your honest comment, you are right  is a figure eight in this particular geometry.  谢谢 alanleeknot.

Ezelius

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Re: Ezelius-loop - a novel adjustable knot
« Reply #24 on: April 07, 2020, 08:13:20 PM »
I have made an improved version about the Ezelius adjustable knots with better images and with the text edited on this page:
http://ezelius.eu/knopar/ezeliusknop/en.html
Any suggestions to improve the text are welcome.
« Last Edit: April 07, 2020, 08:14:32 PM by Ezelius »

agent_smith

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Re: Ezelius-loop - a novel adjustable knot
« Reply #25 on: April 07, 2020, 11:45:32 PM »

Quote
But only for an anticipated amount of adjustment,
with a tail reflecting the range of this, on the smaller
sizes.

         Hmmm, ? alanleeknots at you-tube.

Hi Alan,
An interesting noose structure where there is a reversal of the SPart and tail.

Security is achieved when both legs of the 'eye' are loaded.
The figure 8 structure is distorted - to provide an illusion of a #206 crossing hitch.
« Last Edit: April 08, 2020, 03:20:22 PM by agent_smith »

agent_smith

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Re: Ezelius-loop - a novel adjustable knot
« Reply #26 on: April 08, 2020, 12:24:13 AM »
Quote
I have made an improved version about the Ezelius adjustable knots with better images and with the text edited on this page:
http://ezelius.eu/knopar/ezeliusknop/en.html
Any suggestions to improve the text are welcome.

The Ezelius hitch is interesting in its 2 corresponding forms.

[ ] In your first set of images - it is presented in noose form.

[ ] In the the second set of images, it is presented as a slide and grip progression hitch.

Note the correspondence between the two hitches.
In noose form, the SPart is its own 'host' and there is an adjustable eye.
In slide and grip progression form, an independent 'host' is required - and there is no adjustable eye.

The loading profile is different in both cases.
In noose form, the hitching component only has 50% load.

In slide and grip progression form, the hitching component has 100% load.
It is noticeable when the leg of the hitch is loaded - since it causes  greater distortion in the hitching structure.

...

Overall, a nice effort.

I must say that the Gnat hitch presented by roo some time ago is quite a remarkable hitch in its own right.
Link: https://notableknotindex.webs.com/gnathitch.html

On this website, it is presented in noose form.
The Gnat hitch also has a corresponding slide and grip progression form (not shown).

Its a very efficient structure - requiring minimal rope to form the hitch.
It also has considerable grip strength - particularly in slide and grip progression form (because 100% load is directed to the hitching component.
In noose form, only 50% is directed to the hitching component.

I have been investigating if the Gnat hitch could be useful in surgical applications - which I think is worthy of follow up study. Surgeons are looking for new and improved hitches - and the Gnat hitch might be a promising alternative.
I have also been actively promoting the Gnat hitch (in noose form) as a foot stirrup used with a 'jumar' (ie mechanical ascender) for rope access technicians.
« Last Edit: April 08, 2020, 12:26:24 AM by agent_smith »

alanleeknots

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Re: Ezelius-loop - a novel adjustable knot
« Reply #27 on: April 08, 2020, 02:10:37 PM »
Hi All, Another knot here, same idea with Canadian adjustable loop, a few quick test, and is not bad at all.
         Just so busy, will do more test later.
         while you are waiting, let just entertain you with my video.
         單手八字結自創 One handed Figure eight Knot    https://www.youtube.com/watch?v=R2FlzGqDGcY
          谢谢 alanleeknot.