Anyone who has ever experienced inflatable crafts knows that their design is very different from rigid hulls. One of the key elements to ensure rigidity and crew safety is the rig system, which is not just a decorative element or convenience, but an important part of the engineering system that keeps the boards in a predetermined position under load.
Many newcomers to boating sports are asking: what is a PVC boat leer and can you do without it? The answer lies in the physics of air pressure and the distribution of loads on the fabric. Without the right tension of the PVC system, inflatable tubes can deform, leading to reduced driving performance and, in the worst case, an emergency. In this article, we will discuss in detail the device, purpose and rules of installation of this system.
Understanding the principle of operation of leers is necessary for every owner of an inflatable vessel. Lear system It is a complex of cables, tension devices and mounts that run along the side or across the cockpit, which allows you to adjust the geometry of the boat, making it more stable on the wave and convenient for installing additional equipment, such as bandage seats or motor brackets.
The main purpose and functions of the leer system
The main task of the leers is to create and maintain a rigid contour of the side, and when you pump the boat, the air pressure tends to give the cylinders a round shape, but when you move on water, especially at speed, there is a dynamic pressure that can flatten the sides. Tension leer takes on this load, preventing the balloon from bending inside the cockpit, which preserves the useful area and stability of the vessel.
And leers also act as a safety net. In emergency situations, when you roll over or roll heavily, you can grab a tight rope or belt to keep afloat or get back into the cockpit. This is especially true for anglers who often move around the boat changing gear or catching a trophy. A reliable liner system is a safety feature that can not be ignored.
And also, we should mention the weight distribution, because if you're planning to install a heavy outboard motor or you're planning to put anchor gear in the bow, the leera helps you spread that mass around the perimeter of the inflatable tubes, and it prevents local overloads and seams from breaking. Lear system design It must withstand considerable effort, so the quality of materials is given priority.
⚠️ Warning: Use of damaged or defective liner cables can cause sudden loss of stiffness on the go. Always check the condition of the cables before each step into the water.
The system is not limited to just keeping the shape; in some boats, the leera serves as the basis for attaching protective shields (splashers) or additional bags for equipment. The system is configured to transform an inflatable boat into a full-fledged vessel adapted for specific tasks, whether it is fishing, hunting or family vacations.
Design and types of mountings
When you think about what a PVC liner is, it's important to understand what it's made of, most often a steel wire rope in plastic braiding or a strong synthetic tape, the cables have minimal extensibility, which is critical for maintaining geometry, and the tapes are more palatable and less prone to corrosion, but require more frequent abrasion testing, and the choice of material depends on budget and operating conditions.
Mounting of leers to the body is carried out through special elements called duck They can be made of plastic, stainless steel or aluminum; plastic ducks are cheaper but less durable when exposed to UV light; metal variants are more reliable but require care to avoid oxidation at PVC contact sites.
Materials of cables
Steel or synthetic?: Steel cables in braids are almost non-stretchable and perfectly hold the shape, but can rust when the shell is damaged. Synthetic tapes (Kevlar, polyester) are lighter, not afraid of water, but over time can stretch, requiring periodic lifting. For serious loads, it is better to choose combination options or high-quality steel with double braiding.
There are several types of designs:
- 🔹 It's a leer. - the cable passes through a series of ducks along the entire perimeter of the side, providing uniform tension.
- 🔹 Segmented leer It consists of separate areas between ducks, which simplifies the replacement of the damaged fragment.
- 🔹 transom Leer Stretching across the cockpit, often used to install a hard bottom (HDB) or additional seats.
An important element is tension mechanisms, which can be simple carbines with length adjustment by thread, talreps or quick-removal locks. talrep They allow maximum tension, but they take longer to install, and they are convenient for quickly assembling and disassembling boats, but they can be less reliable than the fixation under extreme loads.
Instructions for installation and adjustment of leers
Installation of the lintel system is a process that requires careful and consistent installation. Incorrect installation can cause balloons to skew or damage to the sticking points of ducks. Before starting work, make sure that the boat is inflated to the operating pressure specified in the product passport. Installation on half-flattened cylinders is unacceptable, because after the final pumping, the geometry will change, and the leera will either burst or sag.
☑️ Checklist of installation of leer system
The installation process usually starts at the bow. Secure the end of the cable in the intended mount. Then extend the leer through all the intermediate ducks, moving to the stern. At each stage, make sure that the cable lies flat, without crossovers and clamps. If you use a system with transom leers for hard floorboard, first install the longitudinal sides, and then mount the crossbars.
The final step is to adjust the tension, and this is probably the most important thing, and the leer has to be pulled so that when you press it, it bends 1-2 centimeters.drag-off) will put excessive pressure on the ducks' sticking sites and may cause them to tear away. Weak tension will not give the necessary stiffness effect.
⚠️ Warning: Never use tools that create excessive force, such as pliers or scraps, to tension the leers.
Once installed, let the boat stand in the sun for 15 to 20 minutes, the air inside the cylinders will warm and expand, the pressure will rise, and the leera may weaken, and make the final lift after this temperature expansion, which will ensure the stability of the system in real-world operating conditions.
Comparison of materials: steel, textiles and synthetics
The choice of material for the leer directly affects the durability and usability of the boat. There are various options on the market, each of which has its advantages and disadvantages. Understanding these differences will help you make the right choice when buying a new boat or upgrading an old one.
Below is a comparative table of the main materials used in lens systems:
| Materials | Strength | Extensibility | Resilience to the environment | Weight. |
|---|---|---|---|---|
| Steel cable braided | Very high. | Minimum | High (with a whole braid) | Heavy. |
| Polyester tape | High. | Medium | Very high. | Light. |
| Kevlar cord | Extremely extreme. | Low. | Medium (fears of UV) | Very light. |
| Nylon cable | Medium | High. | High. | Light. |
Steel cables They're still classics of the genre. They keep their shape perfectly, without requiring a constant lift during operation. However, if the braid is worn, the steel will come into contact with water and rust, soiling the sides and weakening. In addition, in the cold, steel becomes less flexible, making it difficult to assemble the boat in the cold season.
Synthetic materials such as polyester and kevlarThey're nice to touch, they don't cool your hands, they clean easily, and the main disadvantage is that you have to stretch under a lot of stress, you have to test your tension more often, especially at the beginning of the season or after a long loading, and Kevlar is stronger than steel, but it's afraid of ultraviolet light, so these leers require storage in a case.
For most users, the best choice is a combination or quality steel cable with a double braided PVC. This provides a balance between rigidity, durability and usability. If you fish mainly in warm climates and appreciate lightness, synthetics will be a great choice.
Common errors in operation and maintenance
Even the best-quality lintel system will fail if you make mistakes in operation. One of the most common problems is keeping a boat with overstretched lintels. It is strongly discouraged to leave the boat in a assembled and pumped state for a long time (months), and constant stress leads to "tiredness" of the material of the cables and the places where ducks are pasted.
Another mistake is ignoring the scuffs, and in places where the leer comes into contact with ducks or fittings, over time, burrs or thinning of the braid form, and if you notice that the cable has started to "fluff" or the tape has lost color in a certain place, that's a signal to immediately replace the element, and operating a damaged leer is a risk of it breaking at the most inopportune moment.
⚠️ Warning: Do not use aggressive chemicals to clean leers. Chlorine-containing agents and solvents can destroy the structure of synthetic fibers or cable braids.
And there's also the wrong pumping sequence, which is that some users put a leer first, then they rock the boat, or they swing it to the maximum, and then they put the leer. The right algorithm is to pump the cylinders to 70-80% pressure, install and tighten the leer, then pump them to the operating pressure and make the final adjustment.
Regular maintenance will extend the life of your system. After every fishing, especially in salt water, the leera must be rinsed with fresh water. The salt, when dried, crystallizes and acts as an abrasive, rubbing the fibers. Periodically lubricate the moving parts of the tension mechanisms with silicone lubrication so that they do not acidify.
Modernization and tuning of the leer system
For boat owners who want to improve driving performance or comfort, tuning of the leer system opens up wide opportunities. Modernization It could be replacing regular plastic ducks with metal ducks, which would make the mounts more reliable, and it's also popular to install additional mounting points for fishing accessories, such as spinning or sonar holders.
Use shrink tubes on metal elements of leer in the areas of contact with PVC. This will prevent heating of the metal in the sun and damage to the tissue of the balloon.
One of the interesting upgrades is the quick-removal gear, which allows you to remove the lever in seconds, which is convenient for transportation or if you want to quickly increase the usable area of the cockpit, but when you choose such systems, make sure that the locks have insurance against spontaneous unbuttoning.
Ergonomics can also be improved by adding soft neoprene covers to the leer at the gripping sites, especially for boats used in the cold season, when it is unpleasant and even dangerous to touch cold cable or metal (risk of freezing). Replacing the standard thin cables with wider bands (20-25 mm) significantly improves comfort when rowing or moving on a boat.
Competent tuning of the leer system increases not only comfort, but also the overall safety of the boat, turning a standard inflatable boat into a professional tool.
When upgrading, it is important to maintain balance. Strengthening the lintel system should not overload the PVC fabric itself. If you are installing powerful cables, make sure that their attachments (whistle, tape) are also reinforced or glued using denser materials. An unbalanced system can break the lintel at the mounting site.
Can you operate a boat without a sleeve?
Technically, you can run a boat without a liner if the cylinder design allows you to keep your shape due to internal pressure. However, this is not recommended. Without the liners, the sides will be softer, the boat will become less stable on the wave, and the landing will become lower. Also, you lose an important element of insurance. For small boats with an inflatable floor, this is permissible on calm water, but for serious exits, the presence of a steering system is mandatory.
How often should I change my PVC boat?
Life depends on materials and operating conditions. Steel cables in good braiding last 5-7 years or more. Synthetic tapes may require replacement after 3-5 years due to burnout and stretching. The main criterion is visual inspection. If you see damage to the braid, rust or severe stretching that cannot be compensated by adjustment, the liner should be changed immediately.
What to do if the leer bursts on the water?
If one of the segments burst, try to paddle gently to the shore, avoiding sudden movements and a large wave. If the system allows, you can temporarily fix the gap by tying the ends or using the spare cord / rope available in the remplekt, the main thing is not to overload the remaining entire sections of the leer system with sharp jerks.
Does the water temperature affect the tension of the leers?
Yes, it does, but indirectly. It's mainly due to air temperature and solar heating. When you heat it, the air in the cylinders expands, the sides become stiffer and larger, which can lead to a decrease in tension of the straps. Cold water and air, on the contrary, reduce pressure, and the straps can pull the sides. Always check the tension after the temperature changes.
What to lubricate the sourdough talreps of leers?
For lubrication of threaded joints and moving parts of tension mechanisms, it is best to use silicone lubricants or special compounds for marine accessories. They are not washed away with water, do not destroy rubber and plastic, and protect against corrosion. Conventional machine oil or solidol is not recommended, as they can stain clothing and PVC fabric.