Nautile aka Charles Hamel's personal pages
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TUTS

JIMBO
CAVEAT (valid for ALL tutorials -except my own- in this web 
site) : all tutorials are provided " as their author wants them to be", I did
not edit any of  them, I did not proof any of them in the cordage, and they reflect their author personal realisation and stance in explaining things.


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Added 2013 June 11th

A SINGLE-STRAND  'BANNISTER' FOB

Latest trick from Jimbo : his explanations in a pdf



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Added 2013 February 19th
in direct relation to the topics at the bottom of this page

Added 2013 February 4th  A TWO COLOR SPIRAL SENNIT"


FINDING A NEW DESCRIPTIVE (as opposed to "attributive") LABEL FOR THIS SENNIT PROPOSED BY JIMBO

[open quote Jimbo]
I'm honored and flattered that you keep using my name.

BUT...

Could you post this on your page?
============================
Charles,

I'm flattered that, as a shorthand way of talking about it, you've started hanging my nickname on this bit of kinkery.  However, I'd hate to have that "stick", at least without some demurring!!

Maybe we could start calling it a "Spring Sennit"...  Or a "Self-Helical Sennit"...  4-Strand Helicoid Sennit works for me, if you recall our earlier discussions of this
wee bit of knot magick...  Plus it makes people aware of the difference between a Helix (a line) and a Helicoid (a 3D helical structure)... 
Obviously I'm open to suggestions!


Not that I'd seriously object to joining Mr. Walker!!  But not without at least asking for a better name for this.

SO, is there anything besides "Jimbo's Sennit" that names this?

Just asking.  I'm fascinated by the discussion!!
...
It would flatter me to be remembered, but I can't sit idly by and let that happen. 
Besides, it's the Adjustable Ancient Sling that I actually DID invent "from scratch". 
I got too much of this from TIAT to take full credit.


[end quote of Jimbo]


TIAT, IMO was the guy who gave publicity to this sennit algorithm plus a rather
bizarre IMO nothing more than an astute commercial gimmick for me) label but I will never believe that he was its 'inventor'.
It is a much too simple algorithm not to have been found before by several of the so many knots tyers since humanity began playing with rope. His proposed  'avatar' of this knotting algorithm is soft, without any mechanical special characteristics, yours have very special mechanical characteristics and in all what I have seen this TIAT person did not even begin to hint at that.

If  a rose grower pre-existing takes a pre-existing rose and with much  creativity gets
a new mutation from it he owes nothing to the rose diffuser of the rose he starts with since then it is a completely different flower that is  proposed.


For my part I see this sennit that you offered as a WHOLE DIFFERENT ENTITY from the one shown in  
http://www.youtube.com/watch?v=emiLkv4BrWM

and anyone with functional eyes and brain can easily see that.

Still it would be nice to have some proposal if only just for the fun of it.

I tend to favour "descriptive" so I am all for :

self-conforming helical spring sennit

or fancy name   
Transformer helical spring sennit



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Added 2013 February 17th



A FULL UPDATE of JIMBO's ANCIENT SLING that appeared
in Friends-page_12 a while ago


ANCIENT SLING UPDATE

 (it is a .pdf file but I have had a number of those stolen in the past -by robots?- and
put on some other sites specialising in pdf so I now rename them to .fdp : 
after downloading the file rename it to .pdf OR directly ask your .pdf reader to open
it using "open with"
in the contextual menu)



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A discussion is running on the """spiral""" sennit in
bats-belfry_19 
page-des-franšais_14

Added  2013 February 14th


TUTORIAL GIVEN IN THE TOPIC UNDER IS NOW UPDATED

Two Color Spiral SennitTutorial UPDATE

 (it is a .pdf file but I have had a number of those stolen in the past -by robots?- and
put on some other sites specialising in pdf so I now rename them to .fdp : 
after downloading the file rename it to .pdf OR directly ask your .pdf reader to open
it using "open with"
in the contextual menu)




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A discussion is running on the """spiral""" sennit in
bats-belfry_19 
page-des-franšais_14



Added 2013 February 4th   ( added February 10th  follow the story in Bats_belfry_19 )

A TWO COLOR SPIRAL SENNIT

A litlle over a year ago in Friend_page_12  I put a topic Added January 24th with the
title New creation/invention from Jimbo

Jimbo very recently ressurected his project of tutorial and he wrote to a number of us ( Don, Jimmy, Joe, Roy and myself ) asking if we could test it
[open quote]
Hi, friends,
I have written a tutorial for a strange, springy sennit I half made-up half discovered.
I was hoping I could persuade you to give the instructions a try & reply with your sternest criticism.  I don't really have a good ending yet...
[end quote]

THE TOPIC ABOVE THIS ONE HAS AN UPDATE OF TUTORIAL GIVEN JUST
HERE UNDER

Here is my test using this tutorial.
I started with two equal length, about140cm , 150cm each.
At the point of the firsts2Pi helix GREEN has 44cm more left on each"branch" than RED has.
I made this "ending", scoubidou inspired.  (In fact Crowning )

This spiral sennit by Jimbo has really surprising MECHANICAL CHARACTERISTICS yielded by a  particularly tight setting ; this is the point that here is the real novelty as the knotting algorithm is so simple that anyone in the long past of knotting could have invented, re-invented it a thousand times, no particular genius in it, just systematic exploration or as Desmond Mandeville  named them : "trambles".(REEF...REED....SEED...SHED...SHOD... SHOT...SNOT...KNOT  , one crossing change at a time and see if the knotted structure still makes sense ). No special intelligence needed, just perseverance and paper and pencil to take notes.


The full tutorial can be downloaded here    VERY HEAVY  92 Mo
Compacted tutorial      LIGHT   0.6 Mo

 (it is a .pdf file but I have had a number of those stolen in the past -by robots?- and
put on some other sites specialising in pdf so I now rename them to .fdp : 
after downloading the file rename it to .pdf OR directly ask your .pdf reader to open
it using "open with"
in the contextual menu)



Added late in the day January 5th:

I have been appraised by several correspondents of  two claims that this was JD TIAT
invention of someone called JD TIAT and not at all Jimbo's.

Two remarks :

1/ As far as I know Jimbo never claimed to have invented the knotting algorithm but only to have obtained/discovered  particular mechanical properties that were previously unpublished.
2/ Just as Nature use co-evolution, findings can occur independently, in particular with a so simple knotting algorithm.

Now for the subtle and not so subtle allusions to possible plagiary (I  DO NOT take very kindly to that )

ENDLESS FALLS by TIAT (who cannot be the certified inventor of this tying algorithme,
just, at the very best, its diffuser)
http://www.youtube.com/watch?v=emiLkv4BrWM

Only the worst observer will be unable to see the astronomical MECHANICAL difference  in behaviour between  this STRAIGHT and SOFT Endless Falls structure and Jimbo SPIRAL UNDER TENSION with its very peculiar behaviour.

A very simple observation clearly show that one structure, Endless Falls,
is LINEAR and rather SOFT while the SPIRAL SENNIT is an HELIX which is
UNDER TENSION , sufficiently so to induce a sort of shape memory  which gives it is holding power.

The fact that a very tight setting could  give the structure some quite particular mechanical characteristic is here the real finding that apparently fully escaped JD attention ( just look at his very soft and linear knot.)


As for this other proposal as source for a plagiary http://www.youtube.com/watch?v=LOObJxOlH1c&feature=youtu.be

You need to be blind and know nothing about knot tying to confuse this knotting algorithm with the other one.


So there is indeed no need to imply, even indirectly, plagiary and lying from Jimbo and myself.



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You will also find idea from JIMBO in the Friend's pages.
* Friend's page-1    trick for band hat ;  constrictor with one hand
* Friend's page-2    a key fob ; a neat splice
* Friend's page-3    new fob ; micro-splicing ; zebra zoologist and others topics by same
* Friend's page-4   a GPS lanyard ; a very astute hitch ; making a fid without a lathe ;
another key fob
* Friend's page-5   several topics in particular on the Brummel splice
* Friend's page-11  a dragonfly mobile
* Friend's page-12  the presenttaion of what will lead to the two tuts that are the first two
entries in this page


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Copyright 2005 Sept - Charles Hamel / Nautile -
Overall rewriting in August 2006 . Copyright renewed. 2007-2014 - (each year)

Url : http://charles.hamel.free.fr/knots-and-cordages/