Many owners of swimming equipment are faced with a situation where the standard stability of the vessel is no longer enough for comfortable fishing or moving on the water with the whole family. Inflatable bulges They're an effective solution to this problem, and they allow us to expand our useful area and improve water safety, and the installation of additional air balloons on the sides is a popular type of tuning, and it's available even for beginners.
Unlike hard linings, soft ones outrigger They don't create too much resistance when you're for an outboard motor and they can be easily dismantled when you need them, and the right size and shape of the onboard elements can turn a narrow flatbed into a stable platform that you can stand on, even when you're full, and this is especially true for boats with a narrow cockpit or when you're installing heavy attachments.
Let's take a closer look at how to choose the best configuration and avoid the typical installation errors. Proper implementation of the project will not only improve the performance, but also prolong the life of the vessel itself by distributing impact loads. In this article, we will discuss the technical nuances that are often overlooked when self-equipment is used.
Why you need additional cylinders: functions and advantages
The main objective of any additional onboard elements is to increase stabilityIt's a physical characteristic that determines the ability of a vessel to resist rolling and return to its original position after being exposed to external forces, and inflatable boolean structures do this better than rigid ones because of their elasticity and ability to extinguish the wave.
In addition, the installation of boules allows you to place on the sides of additional equipment that in a conventional boat would occupy a precious place in the cockpit. Fishermen often attach to them holders for rods, sonar or anchor systems, which frees up space for legs and movement, which is critical when fishing in pairs.
⚠️ Attention: Installing too voluminous boules without taking into account the power of the motor can lead to burrowing of the nose and loss of controllability at high speeds.
Among the key advantages are:
- 🚤 Significant reduction in the risk of a coup in case of sudden movements of passengers or a sharp wave roll.
- 🎣 The appearance of additional platforms for fastening equipment and comfortable placement of legs.
- 🛡️ Protection of the main cylinders of the boat from puncture and abrasion on the pier or rocky shore.
It is important to understand that cock-piece They act as shock absorbers, and when they hit a wave, they take the energy on themselves, softening the impact that would otherwise be on the hard transan or bottom, which reduces the stress on the design of the boat as a whole.
Design features: shapes, materials and valves
The modern market offers different versions of the onboard boules, which differ in geometry and production technology, the most common are cylindrical models, which are easiest to make yourself, and torpedo-shaped ones, which have better hydrodynamics, and the choice of shape directly affects the behavior of the vessel on the move.
The material is the same reinforced PVCThe density of the fabric is usually 750-900 g/m2. thinner materials are not recommended, as they wear out faster when in contact with water and external objects. The seams must be made hot, which guarantees tightness and durability of the connection.
Particular attention should be paid to the valve system. For boules, petal valves or valves of the type are ideal. BostonIt's a vent that allows you to blow air quickly when you need it, and it's a safety cap that you need to have so that you don't get water or dirt.
When choosing ready-made solutions or ordering tailoring, pay attention to the availability reinforced seatbelt And that's where the mounting to the hull will be, and that's where the maximum tension is going to be, and the lack of reinforcement in the contact areas with the mounting elements will cause the tissue to rupture quickly.
Calculating the volume and geometry for your boat
There is no universal size that fits all: the volume of additional cylinders must be calculated based on the size of the vessel and the desired effect; too small Boolean elements will not produce tangible results, and too large will turn the boat into a clumsy barge.
The optimal diameter for most inflatable boats with a length of 3-4 meters is considered to be a range of 20 to 30 cm The length of the cylinder is usually 2/3 or 3/4 of the length of the useful part of the side. It is important to leave space for the installation of oars and access to the keys, if they are provided by the design.
To calculate the required volume, you can use a simplified formula that takes into account the displacement:
- 📏 For boats up to 3 meters, a volume of 15-20 liters per board is enough.
- ⚓ boats 3-4 meters long will require 25-35 liters per side.
- 🚤 Boats over 4 meters need buls with a volume of 40 liters or more.
The geometry of the mounting also plays a role: if you lower the boulders too low, they will brake the boat and create spray; if they are too high, they will not work with a small roll; the ideal position is when, in a calm state, the bottom edge of the boule barely touches the water or is 1-2 cm from the surface of the water.
| Boat length (m) | Recommended diameter (cm) | Boolean length (% board) | Estimated volume (l) |
|---|---|---|---|
| 2.5 – 3.0 | 18 – 22 | 60 – 70% | 12 – 18 |
| 3.0 – 3.6 | 22 – 26 | 70 – 80% | 20 – 30 |
| 3.6 – 4.2 | 26 – 30 | 75 – 85% | 30 – 45 |
| 4.2+ | 30 – 35 | 80 – 90% | 45 – 60+ |
When self-manufactured, it is better to lay a reserve in diameter, since when pumping the fabric is stretched, and the real stiffness may be lower than expected. Tightness seams in corners and ends require special check before installation on water.
Fixing methods: belts, slings and brackets
The quality of the mounting is a safety issue. There are several basic ways to fix inflatable boulders to the hull of a boat. The most common and reliable option is to use strap belts that are covered by straps that are passed under the bottom and connected on top to fix the balloon.
Implementation of this method will require:
Polyamide sling (width 25-30 mm)
Fastexes (plastic or metal buckles)
Adjustment buckles (crackers or friction)
It's important to have the right attachment points. It's usually enough to have 3-4 points along the length of the boule. It's not acceptable to have a mount just behind the ends, because the balloon will sag in the middle and will hit the side of the boat. The belts must fit tightly around the structure, but not crush it so as not to disturb the geometry.
☑️ Check of the anchorage system
Alternatives to belts can be special brackets or brackets, if the design of the boat allows them to be installed. However, for inflatable vessels, a mild method of fixation is preferable, since it does not create points of concentration of stress in the fabric of the main cylinder.
Step-by-step instructions for DIY installation
The installation process requires precision and consistency, and you first need to prepare all the elements: inflate the Boolean cylinders to the working pressure (usually 0.2-0.25 atm) and let them lie down, so that the fabric stretches and takes the final shape.
Then you should mark the passageways under the bottom of the boat, and it is important that the belts are laid on flat areas without folds or seams, if possible. After marking, put the belts under the boat and fix them on the boulder. Don't tighten them completely until you have leveled the position.
⚠️ WARNING: When stretching your belts under the bottom, make sure there are no sharp objects, sand or stones under the boat that can damage the fabric when stretched.
Procedure:
- 🔧 Place the boat on a clean surface.
- 🎈 Pump the Boolean cylinders and check them for no leaks.
- 📏 Mark symmetrical mounting points on the sides of the boat.
- 🔗 Skip the slings under the bottom and fix the Boolean elements.
After the initial fixation, you need to adjust the boat, you need to keep it straight, you need to check if the boolean structures are interfering with the oars or the engine, and if all is well, you can finally tighten the belts and cut the extra ends of the sling by melting the cuts with a lighter.
Use a heat-shrink tube at the ends of the slings instead of melting with a lighter - this looks more aesthetic and protects against filament dissolution.
Exploitation, care and typical mistakes
Proper care of the extra inflatables is not much different from the care of the main boat. After each watering, they must be washed with fresh water, especially if operated in salt water or contaminated water bodies. Mud and sand, getting between the boulder and the board, act as an abrasive.
Boolean structures should be stored in a deflated state, in a dry place protected from ultraviolet light. Prolonged exposure to direct sunlight on inflated cylinders leads to degradation of PVC tissue and loss of strength of seams. In winter, do not allow the residue of moisture inside the valves to freeze.
It's a common mistake to pump boules in hot weather, and the air expands, and the pressure inside can exceed the permissible limits, which will cause the seam to rupture. Control your pressure. pressure gauge, especially when the ambient temperature changes.
What to do if the balloons start losing air?
If you notice a gradual decrease in pressure, don't panic. First, check the valve, often due to a grain of sand or a loosely closed lid. If the valve is working, prepare a soap solution and apply it to the surface. The appearance of bubbles will indicate the puncture site. Minor damage is easily repaired with a standard PVC remix.
It is also not recommended to use aggressive chemicals for cleaning. Common household soap or special PVC boat care products are the best choice. Avoid contact with gasoline, oil and solvents.
The impact of the boules on driving performance and handling
The addition of additional volumes on the sides inevitably affects the hydrodynamics of the vessel. The boat becomes wider, which increases sailing and water resistance. At low speeds, this is almost imperceptible, but when you get on plane, you may need a little more engine power to get off the water.
However, in planing, properly installed Boolean elements can play a positive role, working as additional zygomatic keels. They stabilize the course stability, the boat is less prowling and easier to hold the trajectory, this is especially noticeable in lateral wind or excitement.
It is important to consider the change in overall width. If you often transport a boat on the roof of the car or in a narrow garage, installed boolean cylinders can create problems with getting to the dimensions.
Inflatable boules are a compromise between maximum stability and minimal water resistance, ideal for fishing and cruising, but requiring attention when maneuvering at speed.
Overall, the impact on speed is rarely greater than 5 to 10 percent, which is a negligible cost for increased comfort and safety for non-commercial use, and the key is to get the right size and not overload the boat.
Comparison with alternative solutions
Beyond inflatable boules, there are other ways to increase stability: Styrofoam or plastic overlays are more durable, but they are heavier and can injure if accidentally struck. Inflatable counterparts benefit from their light weight and versatility.
Some boat models already have built-in inflatable tubes, so if your boat is of this type, the installation of external boules can be redundant. Evaluate the real need: if you are just motion sick or scared to get up, the Boolean elements will help. If the boat falls due to improper loading, you need to redistribute the weight.
In conclusion, inflatable boules are an affordable and efficient way to upgrade, and when done properly, they last for years, making water trips more enjoyable. Don't be afraid to experiment with configuration, but always keep in mind safety precautions.
Can Boolean cylinders be used as independent rafts?
In theory, if you have enough volume and strength, a single Boolean can hold a person on the water, but they're not designed to do that structurally, and they're designed to work in conjunction with the hull of a boat, and it's not recommended to use them as a lifeguard when they're away from the boat.
Do I need to register a boat with installed boules in GIMS?
The installation of inflatable boules does not change the load capacity and weight of the boat in use enough to require re-registration if the boat is already registered. However, if the total length of the vessel (including boules) exceeds 3 meters or the engine mass with the boat becomes more than 200 kg, registration is mandatory.
What pressure to pump into Boolean cylinders?
The optimum working pressure is usually 0.2-0.25 atmosphere (about 3-4 PSI). Boolean elements should not be "rocky." They should be slightly slashed with a finger. Excess pressure when heated in the sun can cause the seams to rupture, and insufficient ones will not provide the necessary rigidity and stability.
Can you make Boolean cylinders yourself from an old tent?
Technically, this is possible if you have access to industrial gluing or PVC special glue. However, the fabric of an old awning can have hidden defects and varying degrees of wear. For safety, it is better to use new certified materials or order tailoring from specialized craftsmen, since your life on the water depends on the reliability of the seams.
Does the Boolean elements affect fuel consumption?
Yes, they do, but they do, but they do, but they do, and the increase in wet surface area and drag leads to an increase in fuel consumption of about 0.5 to 1 liter per hour at cruising speeds, and in trolling or parking, the difference is almost imperceptible, and for cruising fishing, you can neglect this for the sake of comfort.