Inflatable watercraft have long ceased to be just a toy for swimming in the coastal zone, becoming a serious alternative to the classic keel models of aluminum. Orion 5It has earned a reputation as a reliable, easy and affordable option for fishing and recreation. Unlike finished factory products, this model is often assembled independently by enthusiasts, which allows you to save a lot of money and get exactly the specifications that a particular user needs.
The main advantage of this design is the ability to use high-quality materials at cost, excluding the markup of the brand. Orion 5 The boat is a flat-bottomed vessel with inflatable sides, designed for operation in calm waters: on lakes, moderate rivers and in coastal marine areas. Properly assembled, the boat demonstrates excellent stability and carrying capacity, allowing you to comfortably accommodate two, and if necessary three adults with a full set of fishing equipment.
In this article, we will discuss in detail all aspects of owning such a boat, from the choice of dense fabric and glue to the nuances of installing transom and attachments. You will learn why this length is considered the “golden mean” for single and one-and-a-half boats, and how to avoid typical mistakes when cutting material, which can cost you expensive repairs in the first season.
Technical specifications and design features
Boat. Orion 5 The name is often associated with a length of 250 cm (2.5 meters), although some variations of the design are found models up to 270 cm long, the design is based on two main cylinders that give buoyancy, and a flat inflatable floor that provides stability. The weight of an empty vessel usually varies between 20-25 kg, which makes it easy to carry in disassembled form, but requires caution in the wind.
The key element of security here is the availability of transmutation Or a rigid interlock transgress, which allows you to install an outboard motor with a capacity of up to 5-8 horsepower. Air Deck It's a high-pressure inflatable floor, which is a great performance improvement over a conventional plywood floorboard, but the classic Orion can also be equipped with a water-resistant plywood slate floor, which makes it cheaper but adds weight.
⚠️ Warning: When operating a boat with a high-pressure inflatable floor, it is strictly not recommended to exceed the pressure in cylinders above 0.25 atmospheres in hot weather. A boat left in the sun can "blown" and burst at the seams, if not to blow out excess air.
The standard model has a load capacity of about 300-350 kg, which means that after placing two passengers and an engine, the buoyancy margin remains minimal, so control of weight distribution is critical. The aircraft, which is about 35-40 cm high, provides good spray protection, but requires careful control on the wave.
Selection of materials: fabric and fittings
The basis of durability of any inflatable boat, including Orion 5In 95% of cases, reinforced polyvinyl chloride (PVC) is used. For homemade structures, the best choice is a fabric with a density of 750 to 900 g / sq.m. Thinner materials (600-700 g / sq.m.) can be used for tourist models, but for a motor boat that will regularly experience stress from excitement and impacts on the pier, you need “heavy artillery”.
Modern PVC boat fabrics are multi-layered. The synthetic filament (polyester or nylon) base provides tensile strength, and the multi-layer PVC coating is responsible for tightness and UV resistance. When choosing material, note the availability of certificates confirming resistance to fuel (gasoline and oil), as random drops of fuel on the deck should not dissolve the coating.
- 🛡️ PVC reinforced 850g/m2 The optimal balance between weight and strength for boats 2.5 meters long.
- 🧵 Capron thread LL - used for crosslinking parts; should be of increased strength and resistant to rotting.
- 🧴 Polyurethane glue Two-component compositions provide better adhesion than single-component, especially in the cold season.
- 🪵 FSF phanera - the only possible option for the manufacture of sleigh and transom, as it has increased moisture resistance.
The fittings also play an important role: Laurel handles, air-release valves (herbal valves) and leer rings must be securely glued; cheap fittings often cause depressurization because they unstuck under load. When you buy a kit for assembly Orion 5 You can not save on valves and handles - these are the elements on which your safety on water depends.
When buying PVC fabric, pay attention to its elasticity. A high-quality material should not form whitish classes when bending, which indicate microcracks in the upper layer.
Drawings and fabric cutting process
So, self-construction starts with the creation of patterns. Orion 5 There are proven drawings that can be scaled to suit your needs. The basic rule of cutting is to take into account the technological tolerances at the seams. The standard intake is 20-30 mm on each side, but for reinforced seams (where the balloon connects to the bottom), it can be increased. A mistake in the calculations even 1-2 centimeters at a length of 2.5 meters can lead to a distortion of the entire structure.
The cutting process requires perfectly flat surfaces and sharp tools. PVC fabric is slippery and can "go away," so it needs to be securely fixed with loads. Cut the material best with a special disc knife or a very sharp construction knife, changing blades as often as possible. A dull knife "chews" the fabric, leaving the fluffy edges that are harder to seal.
| Element of the boat | Materials | Density (g/m2) | Seam allowance (mm) |
|---|---|---|---|
| Cylinders (main) | PVC reinforced | 850-900 | 30 |
| Bottom (inflatable) | PVC with cord | 1100-1200 | 40 |
| transom plate (paste) | PVC reinforced | 900 | 50 |
| Protective linings | Rubber/PVC | 1500+ | 20 |
Any asymmetry will cause the boat to roll on one side even in calm water, which will significantly impair handling and speed. Before gluing, it is recommended to decompose all the parts on the floor in life size to visually assess the proportions.
Technology of gluing: step-by-step instructions
Boat slug Orion 5 The ideal temperature for working with polyurethane adhesives is from +20 to +25°C. In a cold room, the adhesive may not polymerize, and in a too hot room, it may grab instantly before it has time to penetrate the tissue structure. The process begins with degreasing the glued surfaces with acetone or a special solvent.
The glue is applied in two stages. The first layer ("ground") is rubbed into the fabric and completely dried to a state of "not sticky." The second layer is applied 15-20 minutes after the first. It is the second layer that provides the main strength of the connection. The parts are joined when the glue stops sticking to the finger, but still retains stickiness (checked by the back of the palm). After joining the seams, you need to carefully roll a hard roller (grower roller) from the center to the edges to drive out all the air bubbles.
☑️ Checklist for gluing
Special attention is paid to corners and joints. Pockets are often formed where water or air can leak. These places are reinforced by additional linings of the same fabric or special profiles. After gluing, the boat must "stand" for at least 24-48 hours before the first pumping. Early operation can lead to divergence of joints under pressure.
⚠️ Warning: Never use Moment glue or other chloroprene-based household adhesives for the main seams to glue the boats together, which will give you an elastic but fragile seam that will disperse when you first put a serious load on the water. Only two-component polyurethane compounds!
Installation of transom and attachment equipment
To turn an inflatable boat into a full-fledged motor vessel, you need a reliable transom. Orion 5 The pockets are made of dense fabric and glued to cylinders with a high safety margin, the transom is made of plywood 18-21 mm thick with FFV and is sheathed with plastic or water-resistant paint.
When installing the engine, it is important to balance: If the engine is too heavy for this model, the stern may begin to sink, creating a risk of water flooding through the side. For boats 2.5 meters long, the optimal lightweight two-stroke engines with a power of 2-5 hp or electric motors. Installation of a more powerful engine requires modernization of the transom and possibly strengthening the bottom.
Additional equipment that is often installed on Orion 5These include:
- ⚓ Anchor rum - is installed in the bow for convenient anchoring.
- 🎣 The rod-holders plastic or metal tubes glued into the side.
- 🔦 Fixtures for sonar - allow you to fix the sensor on a rigid base.
- 📦 Equipment bags - are attached to the board with the help of slings, freeing up space on the bottom.
The secret of installing rums
When sticking the rums, be sure to use reinforced PVC cloth linings under the base of the rum. Just glued to the board with the rum under the load of the anchor can tear out a piece of the balloon, which will lead to instant loss of buoyancy.
Tuning and modernization of the Orion boat
Owners often don't stop at basic equipment and tuning their boat, one of the most useful improvements to the boat. Orion 5 This is an inflatable quill, and it's a cylinder-like element that attaches itself all the way down the bottom outside, and the quill significantly improves course stability, especially when you're going against the wave, and it provides additional puncture protection for the bottom.
Also popular is the replacement of standard oars with lighter aluminum or composite versions with plastic blades. Oars are often heavy and uncomfortable. Another important element of tuning is the installation of an awning or sun visor. Although a full awning can be redundant for a small boat, a simple visor overhead will allow you to fish even at a scorching noon.
To improve comfort, you can install soft seat linings (banks). Standard plywood quickly tires your back, so using a foam lined with waterproof cloth makes fishing from a challenge into a pleasure. Be sure to provide mounts for these linings so that they do not slide into the water.
Installation of an inflatable keelson is the most effective way to improve the driving performance of a flat-bottomed boat without complex alteration of the hull design.
Rules of operation and storage
To the boat Orion 5 You've been in the water for years, and you have to follow the rules of how you operate it, and after every discharge, especially if it's in salt water or a contaminated body of water, you have to wash it with fresh water and dry it thoroughly. And wet cloth when rolled up is the perfect medium for mold to develop, which breaks down the polymer layer.
Keep the boat straightened or half-folded at room temperature. It is not recommended to leave it in the cold or in direct sunlight unshrouded for a long time. UV radiation gradually destroys the structure of PVC, making it brittle. Regularly check the pressure in the cylinders and the condition of the valves before each exit.
If you find a puncture or cut, you don't have to panic. You can do small damage repairs yourself with a remix, the damage is cleaned, degreased and sealed with a patch of the same fabric, the main thing is to prepare the surface properly and let the glue dry under the load.
How to keep a boat in the winter?
Winter storage of PVC boats requires compliance with the temperature regime. The optimal temperature is from -10 ° C to +20 ° C. The main requirement is that the boat should be completely dry and clean. It is better to fold it not in a tight roll, but freely so that the folds do not form crumbs. Once in season (winter) it is recommended to take out the boat, lay out and inspect for cracks or traces of rodents.
Can I put a motor more powerful than 5 hp on Orion 5?
Technically, it's possible, but it's not safe. The cylinders and the transom are designed to be loaded to a certain limit. Excessive engine power will lead to yawing, poor handling and a high risk of tipping, especially when cornering or when facing a wave. It can also violate the GIMS requirements for this class of craft.
What is the difference between Oxford fabric and PVC for boats?
Oxford fabric is typically polyester or nylon with polyurethane or PVC coating, but of lower density (often up to 600 g/m2). It is lighter and cheaper, but less durable and durable than high-density reinforced PVC (800+ g/m2). For a motor boat that will be dragged along shore and rocks, PVC is preferred. Oxford is good for light kayaks or awnings.
What pressure should be in the cylinders?
The operating pressure in the cylinders of PVC boats is usually 0.2 - 0.25 atmosphere (about 200-250 mbar). You can not pump "before the bell" - this will cause the seams to rupture when heated in the sun. The pressure in the inflatable floor (Air Deck) can be higher - up to 0.6-0.8 atmosphere, since it has a reinforced design.