Carter's knot
| Carter's knot | |
|---|---|
|
|
| Type | Rope tensioner |
| application | Lash down the load |
| Ashley No. | 1514, 2124 |
| Synonyms | Guy knots |
| English | Trucker's Hitch |
| List of nodes | |
The carter's knot (also called anchoring knot , especially among boy scouts ) is a rope tensioner that is a simple pulley block . With it, lines can be stretched without any further aids.
application
The wagoner's knot reduces the force that acts on the loose part when tensioning a line. Thus it is possible to put more tension on the rope and then to fasten it. Its simple structure makes it suitable for lashing loads on a wagon.
Because of the strong friction and heat generation, the knot is not suitable for tensioning rope bridges . Synthetic fiber ropes can melt and natural fiber material can be ground. In the event of a heavy load, a connecting part (e.g. carabiner, ring or pulley) should be inserted in the loop.
Knot
The carter's knot exists in different versions. Basically, it consists of a loop that serves as a deflection point for the pulley system and a safety knot that secures the line after it has been tensioned.
Two anchor points are required to tension a line. One serves as an attachment point and the other as a deflection point. The line can be tied with any knot at the attachment point. Then the line is led to the deflection point and a loop is placed along the way, which acts as a loose deflector. Then you lead the loose end around the fixed deflection point and put it through the loop. If you pull the end of the rope, the force there is ideally only half the force at the attachment point. However, the efficiency is lower due to the friction at the deflection points.
Loose deflector
An easily detachable loop should be selected as a loose deflector. A clinch knot placed on slip is very suitable . To do this, an eye is placed, the legs of which are crossed several times. Then you make a bay with the loose part and stick it through the eye. The resulting slip forms the loop loop. Other loop knots are possible, but could tighten if pulled strongly. They create more friction and are harder to open after use.
A loop instead of a loop, like the butterfly knot, is also conceivable . However, this has the disadvantage that it is only loaded in one place by the rope. Under heavy loads, this point is more likely to melt or tear. A loop, on the other hand, enlarges when it is tightened. This leads to the stressed area migrating and the abrasion and heat being distributed somewhat. In addition, part of the excess rope that forms during tensioning is transferred into the loop. As a result, less rope runs past the fixed deflection point, so that there is also less friction and wear. This protects both the rope and the anchor point, which could be a tree, for example.
Regardless of the loop knot chosen, make sure that the slip is formed with the loose part. This is the only way the loop can grow and show its advantages over a loop. If, on the other hand, the firm part forms the slip, the loop tightens when it is tightened and blocks at some point.
Fuse node
To secure the tension, a round trip or half-mast cast is placed around the anchor point and the end is fastened around the pulley ropes with half-knots or a loop knot .
If there is not enough rope available, the loose end can also be attached directly to the loop using a slip-on or something similar. However, there is a possibility that the sling will slip and the rope will lose tension if there is too little friction at the fixed point.
Alternatives
If more material is available, such as carabiners, the simple pulley block or the Swiss pulley block can also be used.
Trivia
The Norwegian comedy duo Ylvis has dedicated a song and an instruction video to the alleged complexity of the knot.
Individual evidence
- ↑ The guy knot on pfadfinder-querenburg.de
- ↑ Trucker's Hitch music video (Youtube), accessed on May 7, 2015.
- ↑ TRUCKERS HITCH Instructiuni (Youtube), accessed on May 7, 2015.