A modern inflatable boat is not just two sides connected by a transom, but a complex engineering structure where every detail affects the performance and comfort, and one of the key elements that determines the behavior of a vessel on the water is the type of bottom. inflatable floor Air Deck has become a popular alternative to hard aluminum or plywood sleighs, offering a unique combination of ease, comfort and ease of assembly. For many aquatic motorists, switching to such a design is a solution that changes the way they think about fishing or cruising.
The choice between rigid and inflatable design often causes controversy among owners of PVC boats. On the one hand, the hard floor gives a sense of stability, on the other - the inflatable version provides incredible buoyancy and softness of travel. In this article, we will discuss in detail what constitutes a stable floor. Air DeckYou'll learn about the nuances of operation that will help extend the life of your boat.
If you're planning to upgrade your boat or you're choosing the first model, understanding the bottom is critical. It's not just a pillow, it's a load-bearing element that affects the bottom. hydrodynamics Well-chosen bottoms will make you feel more confident and more comfortable driving the boat when you go out for the planing. Let's take a closer look at the technicalities.
Design and operation of Air Deck
The inflatable floor is based on a solid fabric similar to the sideboard material, but often with a reinforced weaving structure, and inside are thousands of strands that connect the top and bottom layers of PVC. When pumped, these strands are pulled together to create a rigid, flat surface that can withstand the weight of passengers and cargo. Drop-Stitch or "thousandths," which indicates the density of the threads per square inch.
The main advantage is the ability to pump the bottom to high pressure, usually from 0.25 to 0.8 atmospheres (depending on the model), which turns soft-looking fabric into a hard plate. Air cushion It works as a shock absorber, quenching the impacts on the oncoming wave, which is especially appreciated by the anglers of the park, and unlike the hard floor, there is no risk of getting hit with the knee or back on a hard surface when rolling hard.
However, the design has its own peculiarities: to maintain the shape and rigidity along the perimeter of the bottom, special linings are often installed or a sling system is used to prevent the edges from being inflated. Cut ribbonIf it's designed, it can also be inflatable or rigid, which can affect the stability of the course, and understanding these nuances will help you to operate the boat properly.
When first inflating the new inflatable floor, leave it in the sun for 15-20 minutes so that the material warms up and stretches, then pump it to working pressure.
Comparison: inflatable floor versus hard floor
Choosing a floor type is always about finding a compromise between weight, comfort and speed. Hard aluminum sheets or plywood slate provide perfect stiffness, which is important for high-speed boats with powerful engines. inflatable floor loses at maximum speed due to less rigidity and possible deformation under load at high speeds. However, weight gain can reach 30-40%, which is critical for single boats.
Let’s look at the main differences in operation:
- 🚤 Weight: The inflatable floor is much lighter, which facilitates carrying the boat assembled and loading into the car.
- 🌊 Comfort: The softness of the Air Deck allows you to sit or even lie on the floor of the boat without an additional mat, which is not possible with cold and hard aluminum sleigh.
- 🔧 Assembly: Inflate the floor with a pump, which takes time, whereas hard sheets are simply put inside, although they require more space for transportation.
- 💰 Price: Boats with inflatable bottoms are often cheaper to produce, but quality reinforced bottoms can cost comparable to simple sleigh.
It is important to note that for powerful motors (usually over 15-18 hp), manufacturers are more likely to recommend a hard floor, which is due to the fact that at high speeds the bottom experiences tremendous water pressure. Hydrodynamic resistance The inflatable floor can be higher if it is not sufficiently tense, so for high-speed walks and water skis, classic slate is preferable.
Installation and pumping process
Installing the inflatable floor into the boat requires a sequence of actions to avoid distortion and damage to the valves. First, the bottom is straightened inside the cylinders, then the pump is connected. It is important to use a pump with a pressure gauge, because visual pressure determination is impossible. Underpumped bottom will quickly fail due to excessive stretching of the threads, and the pumped can burst in the sun.
☑️ Bottom installation procedure
There are two main types of valves used in these designs: petals and screws. petals allow you to quickly pump a large volume of air, but do not hold high pressure. Bravo or Air Pump) ensure that the pressure is tight at high pressure, often a combination of the petal first, then screw finishing, and the bottom must be hard as a drum after pumping.
When you put it in a keel boat, it's important to make sure that the keel or hard keel gets in place, and the skew can cause the boat to scour the course, and it's also worth checking that the bottom edges don't get stuck under the timber, otherwise they can get rubbed when moving. Equal distribution pressure is the key to the durability of the design.
What to do if the bottom does not hold the shape?
If the bottom remains soft after pumping to working pressure, check the valve for sand or debris. Often the problem is solved by blowing the valve or replacing the sealing ring. If the problem is in the threads (stretched), the bottom requires replacement or professional repair.
Technical specifications and materials
Inflatable floors are made using reinforced PVC of varying densities, usually between 850 and 1100 g/m2. The key parameter is the number of threads per square inch in Drop-Stitch technology. Standard models have about 1,000 threads, premium ones up to 3,000 or more. The higher the density, the harder the bottom can be pumped without the risk of side-width expansion.
Below is a comparative table of specifications of different types of bottom:
| Parameter | Inflatable (Light) | Inflatable (High Pressure) | Aluminum slate | Plywood slut |
|---|---|---|---|---|
| Weight (for boat 3.2m) | ~4-5 kg | ~6-7 kg | ~10-12 kg | ~12-14 kg |
| Toughness | Low. | Medium/High | Maximum | Maximum |
| Comfort. | Highly | Highly | Low. | Low. |
| Assembly speed | Slowly (pump) | Slowly (pump) | Quickly. | Quickly. |
The materials are treated with UV protection and antibacterial compounds, but prolonged exposure to the sun still harms polymers. Tissue density For rocky shores, it is recommended to choose models with reinforced lower layer or use protective mats, and the frost resistance of the material is also important, especially if you plan to operate a boat in the off-season.
Care, storage and repair
inflatable floor operation requires a temperature regime, and in hot weather, the pressure inside rises, and there is a risk of rupture of the seams or the material itself. The critical threshold is considered to be surface heating above +50 ° C.When the pressure can exceed the permissible limits even with a normal initial pumping, therefore, on sunny days, it is recommended to periodically vent excessive pressure or shade the boat.
⚠️ Attention: Never leave a fully inflatable boat under direct sunlight unattended. The thermal expansion of the air can lead to irreversible deformation or rupture of the internal jumpers.
Keep the boat with an inflatable floor is better in a slightly deflated state or rolled up in free rollers, to avoid breaking the strands in the same places. Before packaging, the bottom should be completely dry, otherwise the mold will begin inside the rolled fabric, which will destroy the adhesive layer. Regularly check the valves for tightness with soap solution.
Small punctures are repaired with standard PVC remakes. However, if the internal structure of the threads is damaged (the bottom is "blown" with bubbles), repair is impossible. Repair trains Large cuts should be sealed on both sides using special patches of the same density as the main product.
Proper storage in a dry and cool place increases the life of the inflatable floor by 1.5-2 times compared to storage in a garage or on a balcony.
Effect of bottom type on driving performance
The inflatable floor changes the behavior of the boat on the water, and because of its ease, the boat quickly enters planing mode with less engine power, which saves fuel and allows for lighter motors, but on a large wave, the soft bottom can act as a membrane, transmitting vibration, although it extinguishes sharp impacts better than the hard floor.
Stability depends on the keel. Inflatable keels are effective at low and medium speeds, but they can break off at full speed, losing efficiency. A hard cut keel combined with an inflatable floor gives better results, but complicates construction. For throw fishing or trolling at low speeds. Air Deck It is the perfect choice because of its quietness and softness.
When choosing, consider having a profiled bottom. Some models have inflatable stringers or stiffness ribs that improve hydrodynamics. This allows the boat to steer better and easier. If speed is important to you, look for models marked with a high-speed speed. HP (High Pressure)They provide a more rigid surface.
Can I use a high-powered engine?
Motors above 15-18 hp with an inflatable floor are not recommended by most manufacturers. At high speeds, the bottom can begin to vibrate ("clap"), which creates discomfort and reduces the design life.
What is the optimal pressure for Air Deck?
The optimal pressure depends on the model and is indicated in the product passport, usually in the range of 0.6-0.8 atmospheres (600-800 mbar). Pumping to the state of "stone" without a pressure gauge is dangerous, as the pressure will increase in the sun and can damage the seams.
How hard is the bottom of the swelling resistant to puncture?
Modern materials with Drop-Stitch technology have a high puncture resistance comparable to the sides of a boat, but they are less resistant to sharp objects under load (for example, stepping on a nail) than thick plywood or aluminum.
Can I replace the inflatable floor with a hard one?
Most of the time, no. The design of the boat (the location of the beam, stringers, anchors) is designed for a specific type of bottom, and the replacement of the floor type requires reworking the entire geometry of the boat, which is technically difficult and economically inefficient.
⚠️ Attention: When using a boat in winter, remember that the PVC material becomes less elastic in the cold. inflatable floor should be pumped in such conditions with caution, avoiding sharp bends and impacts.