Author Topic: Quick8  (Read 2264 times)

KC

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Quick8
« on: July 29, 2022, 08:11:44 PM »
Dan Lehman, threw this out in HFP/8 thread months ago; and it is simply great.
Adjustable eye at end/terminal; adjusts from the BE ( like HFP) and not SPart (like Friction Hitch to self type eye) .
Originally made from fig8 like HFP, then a slipped fig8 as shown in that thread:




That someone (elsewheres)questioned just because started from slip.
So made one from Over Hand knot, snuck fig8 in twist for him:


Bitter End goes in OH 'pocket'/loop reference, eye/bight into fig8/2nd loop reference after added twist to form 8.

(figured should have own thread, and leave HFP thread for HFP)
« Last Edit: July 29, 2022, 08:32:25 PM 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

KC

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Re: Quick8
« Reply #1 on: July 31, 2022, 11:51:57 AM »
Dan Lehman's Quick8 front/back with colored regions for the greatest contribution to Rigid Tensions positions as key asset monitored.
In drawings i do try to show/not bury the workings as can happen in normal pix; by my use of rope angles and see-thru hosts ; so pix can most dramatically tell the story.  But here relent to the both front/back views as previously requested in general posts(of you know who); became this weird brain twisting game to flip parts in head then screen with the layers.  Colors are more representative than actual, but should show the pattern fairly faithfully overall. 
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i break down virtually all knots in head like this to see not just a generic rope clump, but specialized parts in chain(already connected).
Parts are ruled and rule over other ropeParts per their Rigid Tensions in competition at crossings.
Hitches, Bends and Bindings all then would also have host friction etc. considerations, that a stand alone knot does not so much(except input/output not mid 'carriage' frictions).

Note how can know the actual loaded forces of some ropePart positions, and then very few left to decipher/guesstimate etc.  These color breakdowns are personal view stemming from even the simplest/where started Half Knot, Squares etc. into Sheet vs. Bowline vs. Becket vs. Bowline eye pulled crossways to length of line etc. views especially most strongly.
Radial expressions/usages of Tensioned Rigidity for rope controls of Frictions, Nips & Grips are MUCH greater than linear uses of same.
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The capture of the seam to Bitter End(BE of Zer0 force) here i see as only against half the load force;
that runs a linear list of arcs gauntlet as like rack along the rope length, as also gets nipped across rope length in and out of the mid major arc/bend.  Most knots do knot work so linearly i think, more employ right angle inside the door conversion as Bowline, HFP parent uses same rigid(as near SPart raw input) fig8 framework crossways, not linearly by contrast i think.  This sweet simplicity holds by any naming to these functions, and is adjustable!
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i think fig8 base is an advanced, dual side of the SPart(or other parent part), Half Hitch(HH) evolution.  Fig8 base offers this different framework, and dual/winged, not singular 'nipping loop' construction by contrast, in generally a more gentle arc-hing giving those nipping loops vs. more abrupt, one sided tipped HH.  HFP with the right angle usage of rigid fig8 framework really exemplifies the balanced butterfly nipping loops across feel to the seam capture before Bitter End to me.
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Positive view in pic, of everyone's greatest contribution to greatest asset.  Even white, least dramatic as neither greatest nor leastest tensioned rigidity is greatest author of change from its input to output.  Also too, any reeving/threading thru white's 'gauntlet' of it's extended framework past HH.  Grimm's Clever Lass of inbetweens neither this low nor high as it's opposite that, brought to rope!  Thus left it's original white form all rope parts with.
Green rope w/o dye the black shading green; i use a reverse strategy and red and blue from RGB of white as presence of all color , to leave only green in the whites and black as absence of all color is untouched by same subtraction .  Reverse strategies and engineering are always great views, parity check against self and even sometimes solutions for tough problems of any type; just used on rope here!
« Last Edit: July 31, 2022, 12:48:59 PM 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

roo

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Re: Quick8
« Reply #2 on: July 31, 2022, 05:23:40 PM »
For reference, the knot is discussed in this thread:

https://igkt.net/sm/index.php?topic=5247.msg34416#msg34416
If you wish to add a troll to your ignore list, click "Profile" then "Buddies/Ignore List".

Notable Knot Index

KC

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Re: Quick8
« Reply #3 on: August 08, 2022, 12:12:45 AM »
Sorry late to the party, i thought he was just announcing it and searched google and not here..
i do see other related posts now here TY, some maybe not all correct; i don't think the knot has gotten it's due, tho; mostly a side note to other explorations focused a number of times.
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If someone came here looking for recent knots this would be the place and still don't think has gotten it's share of the limelight that way, hope the pictures help!  Thread can be moved of course, as still noteworthy in design, simplicity, efficiency etc. as a 'fine piece of machinery' standalone w/o other real reason needed to bring it up !
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To me if the fig8 in Quick8 is purposefully at about most rigid position; so as if was a plastic or metal buckle invoking similar arcs of inline to the source force  list like short rack type mechanic; could get similar response.  This is viewing the full loaded rigid fig8 framework as metal in contrast to 1/2 loaded rigid tension ropePart of 1 leg of eye as seam reeving/threading thru the rigid fig8 framework.  But, in addition to the rigid effects of arching the softer rope part, the rope of the fig8 still shrinks to nip loop type frictions across the softer ropePart.  Rope in fig8 being both rigid enough to give the arcs to the softer rope part that forms seam along it's length, and flexible enough to give radial nip laterally across the cross-axis of the soft ropePart length as well, for both aspects of consideration! 
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i see similar orchestration of inline gauntlet of arcs caused by most rigid ropeParts in "The best grip-slide hitch I normally can't use" thread and also nipping added to the arcs because not really using rigid plastic/metal so add rope consideration of nipping also, and also a JRB offering.





Can try to draw later, but in the Quick8 i see as like a short start to a VT tresse type finger trap design causing the rack like arc list, more splice like pulling more properly along rather than across rope column, w/eye drawn/reeved thru.  Can extend SPart in normal Quick8 down to opposing side of fig8 framework and like make 1 or 2 more fig8s to reeve eye  thru up, over, thru down, to continue the pattern and accentuate the theory to more visible.  Possible help for Dyneema?
Problem is torqueing of the fig8 framework if do this, so use old trick have played with of faux fig8 framework extension off of main.
Do this simply by cross crossing the one rope part on top of the SPart without going under etc., and reeve eye thru for same framework effect w/o the torqueing(pretty much), must do in counter torqueing pairs as if a fig8 to hold form, have worked up to 2 more faux fig8 framework extensions nicely, very splice like pull.
"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

alana

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Re: Quick8
« Reply #4 on: August 19, 2022, 11:22:21 PM »
Dan Lehman, threw this out in HFP/8 thread months ago; and it is simply great.
Adjustable eye at end/terminal; adjusts from the BE ( like HFP) and not SPart (like Friction Hitch to self type eye) .

this is great!
hours of fun
and your pictures and notes are superb  😊

Dan_Lehman

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Re: Quick8
« Reply #5 on: August 20, 2022, 07:03:08 PM »
I should add that a "secured" version of the knot comes
with simply tucking the tail down through the S.Part's
U-turn between the eye legs; in some materials, one
can get this nicely snug to provide good slack-security.

It was this version that I got tested (one specimen,
Quick8s on both ends --neither of them em"bitter"ed)
in 12-strand, 5/16" NERopes Dyneema (w/some blue
coating).  The final tuck didn't seem to have been all
that strained --which I'd expected, given the brevity
of the knot's nipping and the nature of the material.
It was not esp. strong --35% to my tops of 42%, IIRC?

--dl*
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