The modern market of inflatable small-sized equipment is oversaturated with offers, but the models of the series Spider 390 This range, often called the “middle ground,” balances perfectly between the payload of a large boat and the maneuverability of a compact vessel, allowing boat owners to safely venture out into the open water without sacrificing the convenience of transportation.
A key feature of the design is the use of high-strength materials that allow you to withstand serious loads in choppy conditions. Tissue densityThe stainless cylinders are often higher than standard for budget-grade tanks, which directly affects the durability of the product, which is why many anglers and hunters choose this model for their expeditions.
In this article, we will conduct a deep analysis of the technical specifications, consider the nuances of operation and analyze the typical errors in the selection of components. Spider 390 It is considered one of the best solutions for installing an outboard motor with a capacity of up to 15 hp and how to properly prepare the vessel for the first season.
Structural features and materials of the body
The basis of reliability of any inflatable boat lies in the material of its manufacture. Spider 390 Manufacturers, as a rule, use five-layer reinforced PVC. This material has a high resistance to abrasion, exposure to gasoline, oils and ultraviolet radiation. Reinforcing netThe slurry, located inside the polymer layers, provides exceptional tensile strength, which is critical when driving at high speeds.
It is important to note the quality of the joints that connect the individual parts of the cylinders, and in high-quality versions, the technology of gluing is applied by using two-component glue, which creates a monolithic connection. Operating temperature Such seams usually range from minus 45 to plus 70 degrees Celsius, which allows you to use the boat in almost any climatic zones.
⚠️ Warning: When buying, be sure to check the presence of protective linings (splashers) at the joints of cylinders. Their absence can lead to rapid wear of the material in places of friction against the water and the board.
The bottom of the boat also deserves a special mention, and most often in this model, an inflatable floor is used. NDMA (low pressure) or hard aluminum flooring. One is better seaworthiness and comfort, the other is more rigidity and plane speed, and the choice depends on your priorities: if you walk often in shallow water with rocks, the soft bottom will be safer.
The design of the transom is another important element. Spider 390 It's usually made of moisture-resistant plywood, reinforced fiberglass or aluminum profiles, which allows you to install engines of considerable power without the risk of deformation of the aft, and the reliability of the transom attachment directly affects the safety of the vessel.
Technical specifications and load capacity
When examining data-sheet figures, you can not help but focus on the dimensions: the length of 3.9 meters and a width of about 1.6-1.7 meters create a fairly spacious cockpit. Load capacity The boat is often 600-700 kg, which allows three adults with full gear to comfortably sit on board, making it suitable not only for solo fishing but also for family trips.
The weight of the kit assembled is a parameter that is often overlooked. With the inflatable floor and floorboard, the weight can range from 45 to 55 kg. This requires a reliable wheel trolley to transport to the water, especially if you plan to change start points often. The engine is naturally not included in the weight calculation and adds another 20-30 kg.
For clarity, compare the main parameters with competitors in this class:
| Parameter | Spider 390 (NDND) | Analogue A (3.8 m) | Analogue B (4.0 m) |
|---|---|---|---|
| Length, m | 3.90 | 3.80 | 4.00 |
| Width, m. | 1.65 | 1.55 | 1.70 |
| Load capacity, kg | 650 | 550 | 750 |
| Kit weight, kg | 52 | 48 | 60 |
| Recommended engine, hp | 15 | 10 | 18 |
The capacity of the people listed in the documentation is usually 3-4 people, but it is worth considering that when fully loaded, the dynamics of the boat changes. Spider 390 shows excellent results on planing even with two passengers and a 9.9 hp engine, but for three it is better to consider the option with a 15 hp engine.
When calculating the load, be sure to add the weight of fuel, anchor, sonar and personal belongings. The real payload is always 15-20% less than the passport.
Effect of bottom type on driving performance
The choice between a hard floorboard bottom and an inflatable BND is the eternal dilemma of a water motor. Spider 390 Both options are relevant, but they dramatically change the behavior of the vessel on the water. Hard aluminum or plywood paioles provide the perfect geometry of the keel, which has a positive effect on the stability and plane.
Low-pressure inflatable floor (LDPB) gives boat properties catamaranSo these bottom cylinders have longitudinal partitions that, when pumped, create a rigid plane, but they retain elasticity, and this allows you to go through shallow water without fear of damaging the body, and it allows you to travel softer on the wave, but the sailing speed is higher.
If you want to go fast and fishing at great depths where stability is important, you'd better go with a hard decking modification, it's faster in planing mode and saves fuel. For hunting, where you have to pull the boat ashore often and overcome junctions, NDNDM will be the leader.
The secret to fast NDND assembly
Inflate the bottom not completely at once. First, shape, then pump the cylinders of the boat, and only at the end, bring the pressure in the bottom to a working 0.2-0.25 atmospheres, this will prevent the tearing of the membranes.
And it's worth mentioning the keeliness. Spider 390 It allows you to confidently cut a wave height of 0.5-0.7 meters, which is an important safety indicator, since flat-bottom analogues on such a wave begin to hit the water dangerously, creating a risk of ejection of passengers.
Selection of the optimal outboard motor
The engine is the heart of your boat. For a boat 3.9 meters long, the gold standard is a 9.9 horsepower engine, which easily takes a boat with two fishermen and gear to sleeve, while remaining light and economical enough to be used for autonomous driving.
If you plan to actively use water skiing or go out to the river with a strong current, it makes sense to consider engines with a capacity of 15 hp. maximum capacityThe above recommended power may lead to the breakdown of the transom or loss of controllability.
- 🚤 9.9 hp It's the perfect balance of speed, fuel consumption and weight, and it's good for 90 percent of the tasks.
- 🏎️ 15 hp - a choice for those who appreciate maximum speed and plan to plane with full load.
- ⚓ 5-6 hp - an option for quiet running, trolling or use in shallow water, but glides with a passenger will be difficult.
When you install the motor, pay attention to the height of the lower unit. Spider 390 Standard lower unit (S) is most commonly suitable, but in some cases, especially when full load, a long (L) may be required to keep the screw from trapping air on the corners.
☑️ Check before installing the engine
And don't forget the propeller, the propeller's pitch has a direct effect on thrust and speed, for heavy boats like this. Spider 390It often requires a reduction in the pitch of the propeller so that the engine can spin to working speeds. If the engine is not rotating, you lose power and life of the engine.
Comfort and ergonomics of the cockpit
The interior of the boat is organized according to the needs of fishermen. D-rings. The perimeter allows you to attach the railing, which significantly improves safety when driving at night or in high excitement, and you can attach bags, sonars and other equipment to them.
The seats are usually simple cans (fanors), but the design makes it easy to install soft hazel seats. This is not only more comfortable for the back, but also adds storage space inside the seats themselves. The space under the feet in the 390 is enough to stretch the legs, which is important for long transitions.
⚠️ Warning: Never place heavy loads (batteries, anchors) on the sides of the boat, which shifts the center of gravity and can lead to the boat capsizing in a sharp maneuver.
The ease of boarding and disembarking is provided by an inflatable keelson, which also serves as an additional protection for the bottom. The bow often has an anchored shell and a place to fasten the safety end. All these little things together create the feeling of a full-fledged boat, not just an inflatable inflatable boat.
Operational rules and winter storage
And Spider 390 You've been served with faith for years, and you have to follow a set of rules, and after every step you take to the water, especially in salty or polluted water, you have to rinse the boat with fresh water, and the sand and the silt, when it dries, act like an abrasive, destroying the PVC protective layer.
Drying before packaging is a must. Even the minimum amount of moisture inside a rolled-up boat can lead to mold and a bad smell that is very difficult to get rid of. Dry the boat in the shade, avoiding direct sunlight that can overheat the material.
- ❄️ Keep the boat at a temperature of not less than -20 C, but best in a warm room.
- 📦 Do not keep the boat in a rolled-up state under heavy objects.
- 🔧 Check the pressure in the cylinders periodically, especially when changing the air temperature.
For long-term storage, it is recommended to slightly lower the cylinders to compensate for the temperature differences in air expansion, but not leave them completely empty to avoid crumbs of material.
The main enemy of PVC boats is not puncture, but improper storage and drying. 80% of problems arise from moisture and dirt left inside the package.
Frequently Asked Questions (FAQ)
Is it possible to take a Spider 390 to sea?
Yes, the boat design allows you to go to the coastal zone of the sea, provided there is no storm warning and a wave height of not more than 0.75 meters.
Which glue is better to use for puncture repair?
For PVC repair, it is recommended to use two-component polyurethane adhesive (for example, Teknipor or its analogues). Single-component adhesives are suitable only for temporary repair in the field.
How long does it take to assemble and disassemble a boat?
With experience, the NDND boat takes about 15-20 minutes to assemble, and with a hard floorboard bottom, the process can take 25-30 minutes because of the need to lay and fix the sheets of decking.
Do I need to register Spider 390 in GIMS?
Registration depends on the weight of the boat in gear. If the weight of the boat with the installed engine exceeds 200 kg, registration is mandatory. For light engines (up to 10 hp) and standard equipment 390 model weight often remains within 200 kg, but it is better to weigh your specific kit.