Brahmshkot knot is the only reliable solution for connecting two cables of different diameters, when you want to maintain maximum strength of the connection with minimal thickening. Unlike a simple bayonet or a straight node, this mating does not cut a thinner cable under load and withstand jerks characteristic of working with a single rod. rigging. Proper implementation of the node ensures that kentel or the fascia will remain fixed even when wet and vibrating strongly, which is critical for safety on the water.
The technique of mating requires an understanding of the principle of wrapping the root end of a thicker cable with the free end of a thin one. If you make a mistake in the direction of the snares or not sufficiently tighten root-endThe connection can spontaneously untidy under load. That is why the knowledge of the nuances of the formation of loops and the sequence of tightening distinguishes a professional from an amateur, especially when it comes to the formation of loops. rescue operations or towing.
In the process of operation of marine equipment, it is often necessary to quickly and reliably connect linting and the cables having different weaving structure. Brahmshkot knot, being a modification of the bayonet, perfectly copes with this task, preventing slipping thinner rope (thinner rope). Next, we will analyze the step-by-step algorithm of actions necessary to create an inseparable and secure connection.
Features of the design and purpose of the unit
The main difference between the brammock node and its closest relative - the bayonet - is the method of override of the root end. In the bayonet, a thin cable simply covers the root end, whereas in the bramshkot version it passes into a loop formed by the root end of the thick cable. It's creating an effect. self-tighteningwhich is increased in proportion to the applied thrust. This design is indispensable for fastening of the phalts, skeletal and other elements, where the diameters of the parts connected differ significantly.
Historically, the knot got its name from the word "brahm-shock", which meant the tackle lifting the bramsel. Because the brammocks often required build-up or replacement, sailors had to associate a thin wafer rope with a thicker scoot. The reliability of the connection in such conditions was a matter of life and death, since tackle-break At mast height, it could lead to a fall of a person or loss of sail control.
The modern use of the knot has gone far beyond the limits of the sailing fleet. It is actively used in mountaineering to bind the main rope and rapshinur, in construction for temporary fastening of stretch marks and in everyday life for connecting ropes of different thicknesses. The key advantage is the ability to maintain up to 70-80% strength. cable-linkThis is a high indicator for the nodes of this category.
⚠️ Note: Never use a bramsket knot to connect cables of the same diameter under critical load, as in this case a straight or weaving knot, providing better symmetry of force distribution, is more preferable.
Materials and preparations required
For successful mastering of mating technique you will need two segments of cable or rope with different diameters. The optimal ratio is considered to be a difference in thickness from 1: 2 to 1: 4. If the cables are too close in diameter, the knot can behave unpredictable, and if the difference is too large, the thin cable risks. cut off The swelling of a thick one with a sharp jerk.
The fabrication material also plays a role: synthetic ropes slide more than hemp ropes, so require more careful tightening and possibly the use of locking knots. Before starting work, make sure the ends of the cables are not disheveled; if used tetherIt is better to melt or wrap with tape, so that individual threads do not interfere with the formation of a dense structure of the node.
The workplace should be spacious enough to allow free operation on both ends of the ropes. When training, it is recommended to use contrasting colors of cables - this will help to visually track the path of the thin end around the thick one. Presence glove protect your hands from burns when tightening synthetic materials that are strongly heated from friction.
Step-by-step instructions: how to tie the knot
The process of forming a bramshkot node begins with the preparation of a thicker cable. Take its root end and form an open loop (gate), directing the free end in the direction opposite to the direction of tension. This loop will be the basis in which it will be squirt. It is important to keep the loop free enough to have a manoeuvre for subsequent operations.
Then a thin cable comes into play. Swipe its working end from bottom to top through a thick cable loop, then circle around the root of the thick cable counterclockwise (when viewed from above). After that, skip the end of the thin cable under its own root, forming a classic bayonet, but with the obligatory condition: pole-line It should be inside a loop formed by a thin one.
The final step is the procrastination. At the same time pull at both root ends and at the working end of the thin cable, straightening the turns. The knot should tightly squeeze the thick cable. Check that the thin cable does not twist on itself, and its running end comes out at an angle of 90 degrees to the axis. thick-line.
☑️ Checklist for node inspection
Modifications and Variations of the Bramshkot Node
There are several options for execution, each of which has its own characteristics. The double brammock knot suggests an additional obon of a thin cable around the root end of the thick one before the final puff. This increases the contact area and reduces the risk of slippage, which is especially important for the slippery synthetic materials.
Also known is the "lazy" brahmotok knot, which knits faster, but has less reliability. In this version, a thin cable simply covers the thick one, without passing through its loop with a full bayonet. This modification can only be used to temporary with low loads, for example, when drying ropes or organizing unloaded delays.
Special attention deserves a brammock node with a peg. If a wooden or metal pin (pen) is inserted into the hinge of a thick cable before puffing, the knot becomes detachable even under load. This allows you to quickly release the tackle, pulling at the end of the peg, which is convenient when working with the storm-storm systems.
| Parameter | Simple bayonet. | Bramskot | Double-brammock |
|---|---|---|---|
| Appointment | Fixing to object | Linking cables of different thicknesses | Lining of slippery cables |
| Strength | Medium | Tall. | Maximum |
| Difficulty | Low. | Medium | Tall. |
| The risk of creeping | High-pitched | Low. | Minimum |
Typical errors in viscous
The most common mistake is confusion in the direction of thin cable override. If it is carried out incorrectly, the node will turn into an unreliable modification that will unwind at the first serious load. Always make sure that the thin cable covers the root end of the thick counterclockwise (for the right hand) creating a blocking effect.
The second mistake is the insufficient tightening of the root end of the thick cable. If you do not choose a slack, under the load of the loop can collapse, and a thin cable will simply slip out. Before using the connection, be sure to test load, applying a force exceeding the working force to ensure the stability of the structure.
The third mistake is the choice of cables. An attempt to link two cables of the same diameter with a brammock node leads to the fact that one of them begins to play the role of a root, but due to the absence of a difference in rigidity, the node “floats”. There are more suitable solutions for the same cables, such as: straight-knot Or "American."
⚠️ Warning: Do not leave the running ends too short. For synthetic cables, the minimum tail length should be 10 cable diameters to eliminate the likelihood of untying when vibrating.
Comparison with similar nodes
When choosing a connection method, a dilemma often arises: a bayonet or a bayonet? The buckle is easier to knit and untied faster, but it is designed primarily for fastening the cable to a fixed object (ring, rim). Bramshkot node specializes in precisely cable-jointProviding better alignment of forces and less thickening at the joint site.
Compared to a straight node, the brammock wins in versatility when working with different diameters. A straight knot on cables of different thicknesses is almost impossible to tie so that it holds. However, a straight node is easier to untie after lifting the load, while a bramshkot may require the use of Mari spikes (husbands) or screwdrivers for protruding turns.
Compared to the weaving knot, which is also used for binding, the brammock is more compact. The weaving node gives a greater thickening, which can be critical when passing through blocks or rings of small diameter. Therefore, riggingwhere smoothness of passage through blocks is important, the brammock variant remains the uncontested leader.
Practical application and care of the connection
In real operating conditions, the unit is exposed to moisture, ultraviolet light and mechanical wear. Synthetic materials are resistant to rotting, but can lose strength under the influence of the sun, so the joints remaining in the open air, it is recommended to protect the site. cover Or shrinkage. Hemp cables require regular drying and treatment with special compositions.
Regular inspection of the connection is a mandatory procedure. Pay attention to the places of exit of a thin cable from under turns: the appearance of the fluff or breaks of individual threads signals that the knot "works" and the cables are rubbed. In this case, the site must be replaced immediately or Reconnect the connection by shifting the point of contact.
It is better to store the bound cables in a fluffy state to relieve the internal tension of the fibers. Long-term storage in a tight state can lead to the effect of "memory" material, especially in cheap synthetics, which will reduce the overall strength of the material. rigging-system. Periodically tie the knots, changing the bending point.
Can a bramshkot node be used for mountaineering?
The use of a brammock node in mountaineering is permissible only for auxiliary operations, such as the organization of railings or tensioning of pulls, and only if there is a significant difference in the diameters of the ropes. It is not used to bind basic safety ropes of the same diameter, as there are more reliable and certified nodes (for example, a grapefate or double weaving).
How to untie a brammock knot if it is very long?
If the knot is tightened under load, first, weaken the tension of the cables as much as possible. Then find the loop formed by a thick cable and try to turn it relative to the axis. If this doesn’t help, use a thin screwdriver or a manger to push the turns of a thin cable at the point where it exits the loop, gradually choosing the slack.
What is the main difference between a brammock node and a bayonet with two gates?
The main difference is in function and design. The two-slag buckle is used to attach the cable to the object (ring, wood, gaku) and has two turns around the object. The Brahmshkot knot serves to connect two cables, where one cable (thin) wraps around the root end of the other, passing through its loop, which provides an end-to-end connection.
Is this knot suitable for steel cables?
For steel cables, the brammock node is used extremely rarely due to the high rigidity of the material and the risk of damage to the turns. Steel cables are usually connected by means of kows and clamps, welding or special cone fillings. The use of knots on steel cable dramatically reduces its strength and lifespan.
What safety margin does a brahmotok node give?
When properly tied on hemp cables, the knot retains up to 70-75% of the strength of the cable. On synthetic materials, this figure can range from 60% to 80% depending on the coefficient of friction between surfaces.