Author Topic: Adjustable guy line.  (Read 1269 times)

Olegan67

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Adjustable guy line.
« on: December 07, 2019, 09:04:42 AM »
Not a valid youtube URLGood idea for lifting and securing for some kind of tools.https://www.youtube.com/watch?time_continue=3&v=Lh0lCNQ4MsQ&feature=emb_logo
« Last Edit: December 07, 2019, 09:06:01 AM by Olegan67 »

tsik_lestat

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Re: Adjustable guy line.
« Reply #1 on: February 09, 2020, 03:43:03 AM »
It is strange that this  clever adjustable system went by unnoticed, remaining behind the curtain. The simplicity of its development, where a bight is fed through a marlin spike, and the working end is yet fed through this very bight, surpasses some adjustable mechanisms i have seen.

One other quality, is that the line can not capsize to a fixed eye knot and blow its adjustability. Beyond some bulkyness of the main nub, the final securing with half hitches seems needless, as long as the working end remains perpendicular to the axis of loading and balance comes through. A binder, might be another implementation for this knot.

Did you develop it yourself? Either way, thanks for sharing it!! 8)
« Last Edit: February 10, 2020, 11:38:40 AM by tsik_lestat »
Going knots

wysper

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Re: Adjustable guy line.
« Reply #2 on: March 09, 2020, 11:53:58 PM »
I like this.

I just tried it at work, I hoisted a 12kg box of cables into the air.
It held it fine when I let go.
I was using paracord.
If I was going to leave it there I would definitely use the hitches to secure it at the end.

Thanks for sharing. I think it will be quite easy to remember and potentially quite useful.

edit* Just something to be aware of, when I hoisted up the heavy load, it created a lot of heat and friction. It ended up melting the cover of the paracord.
So maybe care needs to be taken - or perhaps the correct cordage to be used for the application. Still like the knot though.
« Last Edit: March 10, 2020, 12:11:24 AM by wysper »

Dan_Lehman

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Re: Adjustable guy line.
« Reply #3 on: March 10, 2020, 10:53:38 PM »
edit* Just something to be aware of, when I hoisted up the heavy load, it created a lot of heat and friction..
Well, yes : it is all that friction that enables
the holding of the lifted mass; and that friction
indicates a lack of mechanical advantage.


--dl*
====

wysper

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Re: Adjustable guy line.
« Reply #4 on: March 11, 2020, 11:49:54 PM »

Well, yes : it is all that friction that enables


You are of course absolutely right. But for a NOOB like me, and perhaps others, it might be useful to know quite how much that can affect your cordage.

I know at an intellectual level that friction can cause damage but to see it when you are using something is really interesting.
Especially since I thought paracord was virtually indestructible (of course I know it isn't) but a bit of hyperbole here.
To see how easily it can be compromised is educational.

I am still learning and it is a lot of fun.

Greg

Dan_Lehman

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Re: Adjustable guy line.
« Reply #5 on: March 12, 2020, 12:48:10 AM »

Well, yes : it is all that friction that enables

But for a NOOB like me, and perhaps others,
it might be useful to know quite how much that can affect your cordage.

I know at an intellectual level that friction can cause damage ...
Others, such as me, who in trying to move a large
(30" diameter? x 6' long) log by convincing it w/webbing
to roll ... , found I'd severely cut into some of the tape!
<ack!>  (And the log ultimately won, too
--no Pyrrhic victory for me, just a doubled loss.)
((And so I have come to find a reason why it's
  maybe best that the log remain in place
  --I like my grapes sour.))  ;D

And with similar webbing (lubricated, soft weave,
polyester cable-hauling tape), I saw that I could
suspend 62.5# vs. 50#, and even 67# vs. 50# held,
w/at most some slight movement?! (maybe it was
that with the lesser difference induced movement
would cease, but not with the larger difference;
and both when set at no-movement would hold!?)
.:. quite some difference (50 vs. 125% of 50!) with
smooth tape & (1cm round stock, oval) carabiner,
too --not some made-in-the-cordage sheave!


--dl*
====