Best knot to tie to a loop under pressure

[Oeanda]

I stopped using a truckers hitch after working on a boat where the skipper forbade the use of it.

I think the worry was that if the lines slackened for whatever reason, the whole deal could unravel. No?

Sounds like that worry might be solved by the modifications mentioned?

[Thumbs Up]

Tying a line to a loop under load gives you a 2:1 advantage over that load. Not sure what to call that knot, a slipped overhand? That is how you lock a truckers hitch. As long as you aren't using super slippery line it works very well. There are different ways to lock it, the simplest is to pass the tail through the slipped loop then tighten the slack out of the loop. Or you can tie the slipped loop around the taught part a few times.

[Secondshift]

Uncertain of your application but sometime a sheet bend (or double)

or joining with a bowline is better to make a longer line from two.

Unless you need mechanical leverage or adjustability at that point.

A truckers hitch "type" knot can be made with a bowline on the bight or other secure loops.

A tautline hitch is useful but can slip under some dynamic loads depending on the lines used.

[SeanPatrick]

Originally Posted by Oeanda

I think the worry was that if the lines slackened for whatever reason, the whole deal could unravel. No?

Depends on the way you tie it. If you do it the way I've seen Aussie truckers do, then yes, it could easily fall apart if slackened.


I use a butterfly bend as the loop. Once I get it taught, I use two (or three) half-hitches tight against the loop to secure it. Not much chance of it coming undone that way. But IMHO, if the whole arrangement has slackened, something else has gone wrong. But then, I only use it in places where the tension should remain constant - like securing loads.

[StuM]

Originally Posted by Secondshift

Uncertain of your application but sometime a sheet bend (or double) is dangerous with modern fibres and shoudl NEVER be used. ... to make a longer line from two.

There, FIFY


Zeppelin Bend, Alpine Butterfly Bend or Reever Bend are all far superior knots to join two lines.

[StuM]

Originally Posted by SeanPatrick

I use a butterfly bend as the loop.

<pedantry>
Strictly speaking, a "bend" is a knot that joins two ropes.
It's a buttefly "loop" (or more generically, a "butterfly knot") when used like this.
(and it's "taut", not "taught" )

</pedantry>

[SeanPatrick]

Originally Posted by StuM

<pedantry>
Strictly speaking, a "bend" is a knot that joins two ropes.
It's a buttefly "loop" (or more generically, a "butterfly knot") when used like this.
(and it's "taut", not "taught" )

</pedantry>

Duly noted.

[Oeanda]

Originally Posted by SeanPatrick

Depends on the way you tie it. If you do it the way I've seen Aussie truckers do, then yes, it could easily fall apart if slackened.


I use a butterfly bend as the loop. Once I get it taught, I use two (or three) half-hitches tight against the loop to secure it. Not much chance of it coming undone that way. But IMHO, if the whole arrangement has slackened, something else has gone wrong. But then, I only use it in places where the tension should remain constant - like securing loads.

Actually it was an Aussie fellow who taught me how to tie it, and the way we did it, it would fall apart when slack, which was part of its charm. Harder to trust that type when tying up flexible irregular amorphous type objects though.

[SeanPatrick]

Originally Posted by Oeanda

Actually it was an Aussie fellow who taught me how to tie it, and the way we did it, it would fall apart when slack, which was part of its charm. Harder to trust that type when tying up flexible irregular amorphous type objects though.

When I first saw the way they do it, I was honestly amazed that they trust that arrangement. But hey, far be it from me to criticize what an Aussie trucker does!

Here's an example:

https://www.youtube.com/watch?v=0EXsvh_1_nA

[waterman46]

Originally Posted by Elcid

What is a good knot to tie to a rope loop, under pressure.
Many times, when I am trying to tighten something, I form a loop, come with the end of the rope through the loop and pull tight. But I don't know how to tie it off at that point. And I usually do all sorts of weird knots to try to secure it.
Do let me know if the description above makes no sense and I will try to illustrate it

Half-hitch back onto the part you just threaded through the loop, or two if you mean business.


Be careful making the loop itself. With some lines, loop will slip and close up under tension if you just made it by using an overhand knot. It's better to lock that loop in place by making another half hitch back onto the standing part. Then take the remaining line and continue to feed it around the object you are securing and back into the loop, finally securing it with two half hitches.

[Mike Banks]

Rolling hitch, or my preference, a round turn and two half-hitches around the standing part, the half-hitches then forming a clove hitch.

A rolling hitch is pretty good, but does reduce the breaking strain of the line a little.

[Shaneesprit]

I thought the pressure meant tying in a panic 😱

[betwys1]

Originally Posted by JBP

A truckers hitch maybe?
https://en.m.wikipedia.org/wiki/Trucker's_hitch

My thought too. A constrictor is hard or impossible to untie at times. A taut line hitch is best for untying, though a slipped half hitch is often used.
https://en.m.wikipedia.org/wiki/Taut-line_hitch

[SimonFirth]

I’m having trouble with foreign terminology. In Oz we throw a rolling hitch on the loaded line which can then take the strain while the end of the previously loaded line can be transferred to where ever you wish to secure it.
Very useful for transferring a headsail sheet from one winch to another while under load.
Instructions for tying a rolling hitch available on request.

[Rightbrainer]

the knot you want is a rolling hitch. Easy to tie and untie under tension. Holds fine. Good enough for the Navy, good enough for me.

located at 12:39

https://www.youtube.com/watch?v=GGDb...?v=f4mHoUNHoO0