rope

[TheTreeSpyder]

This is a newer knot, but that is actually superiorly designed.
Better than Highwayman's or Daisy Chain releases in many ways.

Mnemonically, kinda make a Muenter, pulled backwards (which also works other places) , slipped
Then long way home to slip thru the slip as like short daisy chain and done.
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.Note the minimal disruption to Standing Part (SPart)of virtually only the host,
as the yellow smaller ropePart is to show much less loaded with force after 1st bight slip for no real pressure against SPart
to make this support column deformed.
Sailor Hitch does this minimal stress/deformity crossing of SPart too.
Most other off host/SPart crossings deform SPart to a less efficient/weaker support column than just host alone does.

 

[Maintenance supervisor]

Thanks looks like a good set up!

 

[TheTreeSpyder]

i really like the Saddle Hunter Hitch(post#19 above), but not the angle of pull asserted to it parallel to host/ down the trunk.
Hitch itself has plenty of 180arcs and then pulls along SPart(Standing Part) with a 1D grip of opposing arcs, rather than shearing across the SPart with 1x180. i look at the arcs as presented on SPart as a linear list/gauntlet of arcs, as opposed to arcs usually radially listed on separate host. Linear list of arcs models most well in a rappel rack imagery, and pulls along rope like splice, not shears across like a hook at 90degrees pull across SPart etc.
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BUT, the angle of pull on host is a different matter. There is not a strong seating to host on this side, just the double bearing on the reverse /off side. More Basket like than Choker like framework w/o the 4legs of support.
i characterize the difference by defining each has double bearing on host as ABoK speaks of. Giving 4 legs served from opposing/off side. Basket gets 4x1D supports without strong 1D grip(s) on host, Choker forsakes 2 support legs to Load for getting the seating on Load side to give 2x1D support and 2D grip on host from the 4 legs.
A Basket may jam into taking a 2D/lengthwise pull (1D grip across host + 1D pull along host);
But a choker more mechanically positively has the 2D framework to finesse more against the 2D pull mechanically , squarely.
Even with this ABoK warns not to expect the impossible at this WORST angle of pull with rope.

Saddle Hunter's is more of a Basket, than a Choker grab on host in this view, and hopes for a mechanic won't witness in ABoK chapter_22 dedicated to this worst angle of pull on host, even a rope column host for friction hitch. Workable as a jam more than a clean architecture in Basket kind of grip with lengthwise/2D pull to me.
Seek simply to have loading pull in same geometry dimension as opposing support response.
Basket of 4x1D support; when load pull is 2D/lengthwise does not present this basic architecture to command this level of support.
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Saddle Hunter only gives 1 or 2 legs support of the 4 from double bearing/2 separate turns on host.
As uses the other 2 legs to secure to SPart, not for Load support nor host grip.
Would always want to use ROUND metal part here, many carabiner spines are more flat, re-apportioning metal from the side to the do not pull open axis.

 

[TheTreeSpyder]

HFP / TALK / Slippery 8 :
Our simple Rope, is it's own wonder, to be able to form so easily at will, and then immediately make rigid to use to connect, control bind etc.
Then melt to new support architecture and use in a minute like some dream kit too, only needs other rigid framework to pull from.
Most everything i show have tested at our full work loads in mush more active times, most things stated are logic made in head while working as commanded rope.
This true beauty came along after that, as is just a little over 10yrs old as gains acceptance and gets shown.
So have played extensively in more normal usings, and this is always listed as for utility use to a conservative profile.
It may be some day shown as top rescue ready class tho..(this and the mechanics of the Bowline comparison are own views tho)

Roo's notableknotindex>>slippery8 page
wikipedia>>Slippery_eight_loop
netknots.com>>slippery-eight-loop
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The adjustment on this is just too sweet, but then Achille's Heel of: doesn't take spreading as well as even regular Bowline, that doesn't take it well always..
>>But here can simply raise the 180arc between nipping loops and throw the Bitter end thru, or just bight as fix.
>>So, that as the force in eye changes 90degrees, can slip by the lock used, so offer a lock at a 90degree position to compensate like this:

 

[TheTreeSpyder]

Rope Brake, capstan, bollard, Porty etc. RADIAL frictions in tree work , also show same math, to less extent in knots.
Roo's NotableKnotIndexpages talk some about friction.
Offers a picture showing 6x arc180 with rope to metal CoF of .3
input a HOLD(not trying to lift )of 7# effort LEVERAGES to holding 2000# monster force (by comparison)at bay with this 'simple' math.
Notable Knot Index: The Power of Friction
My version way back when was drawing of a baby sitting on the end of a rope going to tree warps, holding back a bus!
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Notable Knot Index: Pipe Wrench from Rope shows an interesting old-timey usage of this ever present force to harvest to such services.
and also lists this Google Calculator readout showing the formula again , and the keys used for E, PI, exponential etc. to the 1ton sum of hold from the 7# effort!
7x(e^(0.3 x 6 x PI)= ~2000# is all it takes to peel back the curtain and peek at the wizard workings hidden in microcosm of a knot.
>>so how to command this and other things around you; with these 'simple' mechanical commands, as like computer commands.
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As friction reduces the tension of the rope, it also reduces the rigidity, to a more 'nippable soft'
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line_14 of spreadcheat below reads: 'triple round', 1080 degrees , 6x arc180 0.3 CoF gives 285.68 friction factor leverage in chart
>> 7# holding effort X 285.68 leverage = 1,999.76# force/load held
wish had such an easy 285x lifting lever, but 285x easy brake leverage is nice to know too !
Nylon on ropeBrake of Aluminum vs Steel also shown for how much difference change of CoF and turns matter exponentially in this organic pattern

By the engineering numbers, a nylon rope on an Aluminum vs. Steel round ropeBrake device;
gives exponentially wider and wider frictional differences with successive arc180 turns.
The only variant is CoF Nylon w/Aluminum @ .25 vs. w/steel @ .40
Stuff like this can be much more of a mystery until can pull the curtain back with the numbers;
and start to read as like on the right frequency, with less garbled dead spots etc. in what you do get.
Always tell self more of an open the door, rather than peek underneath the door; look at the world.
The math says this is a lesson in all things.

Know your tools, getting a rope brake device can be a total game changer,
as so can a throwline for much less; if you use/play with them.
Working with a Porty, allowed me to understand frictions hidden inside a knot microcosm much more fluently.

Radial vs. Linear Frictions for Rope Rescue and Nylon/Aluminum CoF: .25
rest of quoted CoF’s: EngineeringToolbox.com
fuller spreadcheat: tinyurl.com/radial-frictions-spreadcheat

 

[TheTreeSpyder]

At IGKT forum last November knot guru Dan Lehman has simply reversed the tuckings thru fig8 to opposite direction for a quicker, and sleeker adjustable terminal/ending eye on rope like Bowline. From a very familiar figure8/slipped +1 tuck is DONE/sweeeeeet!

Dan Lehman has defined points and come up with other innovations; including a great quick release : The Tumble Hitch
Both very good, and conceptually very clean builds.

 

[Del_]

At IGKT forum last November knot guru Dan Lehman has simply reversed the tuckings thru fig8 to opposite direction for a quicker, and sleeker adjustable terminal/ending eye on rope like Bowline. From a very familiar figure8/slipped +1 tuck is DONE/sweeeeeet!

Dan Lehman has defined points and come up with other innovations; including a great quick release : The Tumble Hitch
Both very good, and conceptually very clean builds.

Why would you leave a bight in the end of a rope sticking out of a figure eight that wasn't secure?

It looks like a good invite to use it and that would be a serious mistake.

Rock climbers use the figure eight quite often for tying in.

And why does a figure eight in the end of a rope need to be 'slipped'?

Should we be in that big of a hurry that we need a slipped eight.

I know I'm knot.

Great visual by the way even if it is a bit hard to follow.

Good to see you.


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[TheTreeSpyder]

yo Bro!
Utility class, deceptively simple, almost trick from slipped 8 +1move.
Originally started Quick8 w/8 as to make parent HFP8,
then lace tail opposite way thru than HFP8.
Adaptation here amounts to same, just start with slipped8.
>>and flip tail in loop opposite side of Standing Part/DONE!
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Draw almost closed holding both ends and eye/4legs from either side of knot works,
and final tension set after release tail/Bitter End makes seat better for you maybe.
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More towards replacement for utility cord/rope alternative for adjustable eye via Adjustable Hitch or other Friction Hitch back to self to form adjustable eye than lifeline/hard rigging usage for sure.
This is different as adjusts from Bitter End and arguably easier to make. Am student somewhat of it's author, as many are..

 

[TheTreeSpyder]

Went and made ya this view going thru Overhand Knot, maybe even quicker:

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Rock On !