Choosing a swimming vehicle for fishing or resting on the water is always associated with finding a compromise between load capacity, speed and ease of transportation. NDNDN The abbreviation for NDND stands for "inflatable floor of inflatable floor," which indicates a key design feature: a floor rigidity comparable to plywood, but with the flexibility and deflection capability.
Unlike classic models with a floorboard (hard) bottom, where you need to assemble floor sections and install stringers, everything happens much faster. Inflatable boat This type of water is ready to operate almost immediately after pumping the cylinders, which is critical if you often change locations or go out on a pond alone, when every minute of downtime on the shore matters.
But operating a powered vessel like this imposes its own requirements on owner training, understanding the physics of soft bottom behavior under the rotor load, knowing the nuances of the transom, and properly matching the powertrain. In this article, we will go into detail all aspects of ownership, from model selection to storage nuances, so that your vehicle can be used for a long time. exploitation She was safe and comfortable.
Design features and advantages of the inflatable floor
The main element that distinguishes this category of vessels is the design of the bottom, which is a multilayered structure of reinforced PVC It's a material that has thousands of vertical threads inside it, and when pumped to a working pressure (usually 0.2 to 0.25 atm), the bottom becomes rigid, forming a single plane that is resistant to deformation.
This engineering solution offers several undeniable advantages, first of all, the absence of rigid elements inside the body, which reduces the overall weight of the kit. NDND boat It is often lighter than a pyeol of similar length, making it easier to carry to water. Secondly, the inflatable floor provides better germination per wave and a softer stroke, since it acts as an additional shock absorber when hitting water.
But it's also important to consider the specifics of the material, and although modern fabrics are very durable, they're more sensitive to punctures by sharp objects on the shore than plywood sheets. hydrodynamics The inflatable floor may differ from the rigid V-shaped, which affects handling at high speeds.
- 🚀 High speed assembly: inflated the cylinders - and you can swim, no floorboards and stringers.
- 🎒 Compact transportation: assembled takes up less space in the trunk.
- 🌊 Comfort on the wave: soft bottom extinguishes the blows, reducing the load on the fisherman's spine.
And it's important to note that the hardness of the bottom is directly dependent on the quality of the workmanship and the pressure, and cheap models can play underfoot, creating a trampoline effect, which is tiring when you park long. membrane High pressure keeps the shape perfect, allowing you to confidently move around the cockpit.
Motor choice: power and type of fastening
Selection of the power plant is the second critical stage after the purchase of the body itself. Boat with engine It should be balanced: a weak engine will not lead the boat to sliding with full load, and an overly powerful one can lead to a rollover or destruction of the transom. For models with a length of 3.2-3.6 meters, the optimal range is 5-9.9 hp.
The key here is the transom height. Most inflatable boats have a 381 mm (15 inches) height, which is the standard for a short leg. However, there are models with a 508 mm (20 inches) transom under the long leg, which allows for more powerful and economical four-stroke engines. engine With a long leg on a short transnec without special elongation of the lower unit will lead to overheating and cavitation.
Also worth paying attention to the type of control. For fishing, the rumble control is often preferred, which gives tactile control of the water. For cruising models or when installing knobs in the bow, you may need a remote control. gas-controller (remote control).
When you install the motor on the inflatable floor, it is important to remember the phenomenon of yaw. Soft bottom is less stable on the course than a rigid body, so the motor must have a clear adjustment of the trim, and the adjustment of the inclination of the lower unit helps to compensate for sailing and loading.
If you plan to use a boat with a full load, choose a motor with a power reserve. For example, for a boat under 9.9 hp, it is better to take a 15-horsepower unit, but operate it half-heartedly - this will prolong the engine life.
Assembly and preparation process for launch
Proper assembly is the key to the durability of your boat. Despite its apparent simplicity, there is an algorithm that can cause the hull to skew, and always start with a flat surface, clear of thorns and debris. Inflatable boat It does not tolerate sudden temperature changes during pumping, so let it lie in the sun for 10-15 minutes before starting work.
The cylinders should be pumped in several stages, first punish all compartments to 50-60% of the operating pressure, then walk around the perimeter and tighten the valves, the final pressure is achieved after the material is slightly stretched under the primary air pressure. gauge necessarily, since it is difficult to determine the critical pressure on the eye, and pumping in the heat can break the seams.
Pay special attention to the installation of the tension deck (if it is structurally provided in your model of NDND), which is stretched between the sides and gives rigidity to the entire structure, turning soft cylinders into a full-fledged one. corpus.
☑️ Checklist before launching
⚠️ Warning: Never leave a fully pumped boat in direct sunlight unattended. The air inside the cylinders heats up and expands, which can cause the seams to rupture or deform the valves. In hot weather, put excess pressure on.
Water Exploitation: Behavior and Manageability
The plane is the most critical thing. inflatable floor NDNDB boats require a sharper and more confident addition of gas than hard bottoms. Because of the greater resistance of water to the soft bottom, a vessel may not want to "get up" for a long time. Once the nose is raised, you need to add smoothly but confidently. turnoverto be fixed in the glittering mode.
While on the move, the boat's behavior depends on the distribution of the cargo; the center of gravity should be shifted closer to the transom, but not so much that the snout went underwater; Passengers and heavy equipment (anchors, crates) should be better placed in the aft and central parts; the bow should remain light for better visibility and germination on the wave.
When cornering at high speed, inflatable sides can be more likely to heel than rigid ones, which creates the illusion of instability, but is usually safe within acceptable rolling angles, the main thing is to avoid sudden movements in the body and distribute the weight of passengers evenly over the board. diameter cockpit.
The secret to fuel saving on the NDND boat is to get out quickly and keep your speed in the maximum torque zone when accelerating to reduce the transition time when fuel consumption is maximum.
Comparison of specifications: BND vs. Pied-boat
To make a smart decision, it is useful for a potential buyer to see a direct comparison of the two main design types. Below is a table showing the key differences that affect choice in a particular environment.
| Parameter | NDND boat (inflatable floor) | Pillet boat (Phanera/Aluminum) |
|---|---|---|
| Assembly time | 10-15 minutes | 20-30 minutes |
| Weight of kit | Easy 5-10 kg. | Harder on the floor. |
| Speed on water. | Lower by 3-5 km/h | Higher, better hydrodynamics. |
| Durability of the bottom | Higher risk of puncture | High resistance to abrasion |
| Comfort on the wave | High (depreciation) | Medium (hard punches) |
As you can see from the table, NDMA It's better in mobility and comfort, but it's less fast. It's better in steering and speed, but it's less weight and more time, and it depends on priorities: if you want to get to the point of catch, you need to take the NDNDM, if you want to get to the top speed, floorboard.
It's also worth mentioning the repairability. Inflatable floor puncture can be sealed in the field with a remix. Damage to plywood or aluminum sheet will require more serious intervention or replacement of the element, which away from civilization can be a problem.
Care, storage and winter conservation
The long life of your boat depends on how you store it. PVC You need to be thoroughly washed with fresh water, especially if you've been swimming in a salty pond or in mud-covered areas, and salt and organics break down the fabric and glue structure over time.
Drying is a must before packaging, and even minimal moisture inside a rolled-up boat will produce mold and a bad smell that is almost impossible to remove, dry in the shade, fully open the valves, direct sunlight when drying can cause local overheating and deformation.
For winter storage, a temperature of -20 to +30 degrees is ideal, but it is optimal to keep the boat at room temperature in a straightened or slightly pumped state, which will prevent crumbs of material along the folds that can turn into microcracks by next season.
Can I keep the boat in the cold?
You can store it, but the PVC material is blubbering in the cold. If you plan to go fishing in the winter, remember that hitting the ice or bending sharply at temperatures below -15°C can cause the tissue to rupture instantly.
⚠️ Warning: When packing a boat, never fold it strictly along the same folding lines. Change the geometry of the package each time to avoid the formation of "tired cracks" in the material, which will eventually poison the air.
Frequently Asked Questions (FAQ)
What is the optimal pressure in the cylinders and bottom?
For most NDNDM boats, the operating pressure in cylinders is 0.2-0.25 atms (200-250 mbar). The high pressure bottom (High Pressure) is pumped to 0.4-0.6 atms, and sometimes up to 1.0 atms depending on the design. Always check the manufacturer's instructions, as excess pressure in the heat is dangerous.
Can I smoke in a PVC boat?
Not recommended, sparks from a cigarette or a fallen corner instantly burn PVC, leaving intractable holes, and a smoldering cigarette butt between the sides can cause the entire structure to ignite, and smoking on the water is a high risk of losing the boat.
How to wash the boat after fishing?
Use regular water and a soft sponge. To remove persistent contaminants (oil, gasoline), you can use special PVC cleaners or a weak soap solution. Aggressive solvents, acetone or gasoline can not be used, they destroy the protective lacquer layer and adhesive sutures.
Should the valves be lubricated?
Yes, rubber valve seals are recommended to be periodically lubricated with silicone lubricant, which preserves the elasticity of the rubber, prevents it from drying out and cracking, and ensures tightness of closing in the cold season.
What if the boat starts poisoning the air?
Find the leakage site with a soap solution (bubbles will point to a hole). Degrease the surface, hide with fine sandpaper, apply PVC glue, let it dry and press the patch. It is important to use the same chemical base glue as the boat material (usually polyurethane).