Author Topic: Dyneema-friendly knots (new to dyneema)  (Read 22302 times)

KC

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Re: Dyneema-friendly knots (new to dyneema)
« Reply #15 on: March 28, 2023, 11:59:07 PM »
Knots work partially on reduction of tension thru friction(arc180s/radian PIs give greatest friction conversions)
problem: Dyneema ruling friction co-efficient approaches that of Teflon, literally almost Zer0.
>>So math will be whatever xCOF multiplier of almost Zer0 wreaking havoc against efforts in math and therefore work products (for one thing). i think adjusting friction problem directly with other materials like see in some ropes/slings works.
« Last Edit: March 29, 2023, 12:29:03 AM by KC »
"Nature, to be commanded, must be obeyed" -Sir Francis Bacon[/color]
East meets West: again and again, cos:sine is the value pair of yin/yang dimensions
>>of benchmark aspect and it's non(e), defining total sum of the whole.
We now return you to the safety of normal thinking peoples

Dan_Lehman

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Re: Dyneema-friendly knots (new to dyneema)
« Reply #16 on: March 30, 2023, 09:11:27 PM »
There is also this modified Ashley stopper that is said to slip less on Amsteel-like slippery cords: slip the regular ABoK #526 and tuck the tail through the last eye.

https://youtube.com/shorts/ii4c7aRonOQ

Not sure how effective it may be...
Not sure who "said" it was less slippery
--or, more to the point, that Ashely's Stopper
slips!?  (It's vulnerability is to pulling through.)
One can form a like knot in which the U-turned
S.Part goes around one side :: just reverse the
handedness of the OH tied around the S.Part
after it makes its U-turn.

--dl*
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mcjtom

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Re: Dyneema-friendly knots (new to dyneema)
« Reply #17 on: April 06, 2023, 07:11:59 AM »
Quote
more to the point, that Ashely's Stopper
slips!?

Have you seen it holding on Amsteel-like cords under higher tensions?  If it doesn't, perhaps this may be worth trying: tie the Ashley-like stopper, but start from the Poacher's Noose (#409) instead of the Slipknot?  The '3-petal' shape and symmetry underneath the stopper are largely retained and the tying remains simple.  May even have a name somewhere.
« Last Edit: April 06, 2023, 07:15:26 AM by mcjtom »

mcjtom

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Re: Dyneema-friendly knots (new to dyneema)
« Reply #18 on: May 18, 2023, 04:20:35 PM »
By accident I just came across a report suggesting that the Ashley stopper indeed does not hold well in Amsteel Blue soft shackles.

https://l-36.com/soft_shackle_test_data.php

Dan_Lehman

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Re: Dyneema-friendly knots (new to dyneema)
« Reply #19 on: May 18, 2023, 09:19:32 PM »
By accident I just came across a report suggesting that the Ashley stopper indeed does not hold well in Amsteel Blue soft shackles.

https://l-36.com/soft_shackle_test_data.php
One cannot be sure of the behavior :: as noted,
Ashley's is prone to capsizing/folding-tail-into-knot,
and perhaps that's what happened in this case.
(Otherwise, one must picture the material making
all those turns and just *flowing* out ?!)

--dl*
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