Trailer for PVC 420 boat: selection criteria and operation

Possession float-boat 420 cm is already a serious level in water tourism and fishing, and this size allows two or three adults with a full set of equipment to comfortably sit on board, but creates logistical difficulties when transporting. trailerIt becomes an indispensable assistant in moving to the point of descent.

A mismatched vehicle can turn a trip to a pond into a continuous torment, full of risks of damaging expensive property. In this article, we will discuss in detail the technical nuances, types of structures and features of the operation of trailer devices specially adapted for boats of this class.

Overall requirements and load capacity

The first thing the owner faces when choosing a tractor is the physical dimensions: a vessel length of 4.2 meters inflated condition requires the corresponding length of the lozenge or keel of the trailer. However, it is important to consider not only the length of the cylinders, but also the hinged transom motor, which is often left fixed during transportation. Overall length The set in the assembly can reach 5 meters or more, which dictates the requirements for the base of the trailer.

The average weight of a 420 cm inflatable boat with a hard floorboard bottom is about 90-110 kg. Add the weight of the outboard motor (20 to 70 kg), fuel tank, anchor and personal belongings. The total weight of the cargo can easily exceed 250 kg. single-axle trailer For passenger cars, it usually has a permissible weight of up to 750 kg, which creates the necessary safety margin.

However, do not chase excessive mass. Too heavy frame trailer without load will have a smaller payload, but at the same time more load the coupling device of the car and increase fuel consumption. The optimal ratio is considered where the actual weight of the trailer does not exceed 150-180 kg.

• 📏 The length of the lozenge must be at least 450 cm for reliable fixation.
• ⚖️ The payload shall be at least 300-350 kg, taking into account the stock.
• 🚗 The gauge should meet the standards of a passenger car (usually 1400-1600 mm).

⚠️ Note: When calculating the total weight, be sure to add the weight of additional equipment, such as a pressure crane for loading, if it is planned for installation. Its weight can be from 15 to 30 kg and should be taken into account in the overall balance.

In addition, it is important to consider the height of the side. For boats with high pressure inflatable tubes (High Pressure), it is critical that the sides of the trailer do not rub against them when driving on irregularities, the design must provide a gap or have special protective elements.

Types of passement: keel and polysupport

The design of the pad determines how safe your vessel will be transported. For PVC 420 cm boats, which often have a pronounced keeliness, two options are most popular: keel (single-supported) and polyprop (with several rollers or sleds).

Keel trailers It's a classic pattern that provides excellent stability on the track, and it's rigidly fixed in the longitudinal axis, which prevents yaw, but if you don't adjust the height of the supports properly, you run the risk of locally pushing the cylinder or damaging the seams at the point of contact.

Multi-support systems, often called roller systems, spread weight over a larger area, ideal for descent and ascent from a flat land, because the boat can easily roll over rollers, but at high speeds, such a structure can be less stable if it does not have additional side limits. Vibrations. From the road are transferred to the hull of the vessel more intensively, which requires high-quality shock absorbing materials on the supports.

Modern models often combine the advantages of both types: the keel base is complemented by side support rollers that prevent boats from sinking when wind gusts or trailer rolls, which is especially true for wide 420 cm models, whose sailing speed is very high on the track.

Manufacture materials and anticorrosion protection

Operating a trailer in the vicinity of water, often salty or contaminated, imposes stringent material requirements. steel-fillThe main enemy here is corrosion, and quality products undergo hot galvanizing, which provides decades of protection, as opposed to simple painting, which begins to peel off after the first season of active use.

Aluminum trailers are a premium segment, 30 to 40 percent lighter than steel, which is good for car dynamics, aluminum doesn't rust in the conventional sense, although it can oxidize to form a protective film, but the cost of these structures is much higher, and the maintenanceability in the field is lower: if steel can be cooked, then it can be cooked. aluminum It requires special equipment and skills.

Wooden elements, such as padded bars, also require attention. Usually larch or processed pine. Over time, the tree swells, cracks and needs to be replaced. Some owners change the wooden bars themselves to rubber profiles or specialized plastic to prevent rot.

Frame material	Weight (approximate)	Resistance to corrosion	Price.
Steel (painted)	Highly	Low.	Low.
Steel (galvanized)	Highly	High.	Medium
aluminum	Low.	Very high.	High.

⚠️ Attention: Even a galvanized trailer requires maintenance. After each trip on salt water or winter road (with reagents), the frame must be thoroughly washed with fresh water, paying attention to hidden cavities and welds.

When choosing, pay attention to the quality of welds. Insects or metal infusions can become hotbeds of rust that quickly eat even galvanized coatings. Ideally, if the seams are additionally treated with zinc-containing compounds.

Equipment: light, winch and crush

Safety on the road is impossible without proper lighting. Standard set includes position lights, stop lights and turn signals. For a boat 420 cm, which covers the view from the rear, it is critical that the signals are clearly visible. light-opticsIt is sealed and less sensitive to vibrations than incandescent lamps.

The winch is the main loading mechanism. For a boat with an engine (up to 300 kg), a hand winch with a traction force of 500-700 kg will be the best choice. The cable is better chosen from stainless steel or synthetic. Synthetics do not rust and are safer when cliffed, but steel is more durable when in contact with sand and dirt.

A pressure crane makes life much easier by allowing one person to load a boat without pulling the engine out. Designs are removable and stationary. Removables are convenient because they don't interfere with movement, but take time to install. Stationary can increase the dimensions a little, but always at hand.

The safety cable (chains) must be secured separately from the breather and be of sufficient length so that when the trailer is separated from the farcop it can hold it on weight without touching the road.

Features of operation and storage

The PVC trailer is designed to be used in a boat, and inflatable tubes are afraid of sharp edges and excessive friction, and before each loading, you need to visually inspect the pad for sticking screws, nails or sharp edges of the metal. Altitude adjustment The supports should be carried out taking into account the load of the boat: under the weight of the vessel, the cylinders flatten slightly, and if the supports are too high, they can damage the bottom.

Speed mode is also important: an empty trailer can vibrate strongly at high speeds, and a laden one can have great inertia. It is recommended not to exceed 90 km / h, especially on uneven surfaces. Sharp maneuvers and braking can lead to shifting of the load, which for an inflatable boat can rupture the seams against the fasteners.

Storage solves many longevity problems: the ideal option is a garage or a canopy. If the trailer remains open, be sure to remove the wheels to reduce the load on the suspension and avoid the formation of flat seats on the rubber from long standing. Rubber elements It is better to remove or cover from direct sunlight, which accelerates their aging.

How do you extend the life of bearings?

Hub bearings are the most vulnerable place. Even with boulders, frequent diving (especially hot after a long ride or cold after heating) has a "breathing" effect: the air inside the hub expands and contracts, sucking water. Use special water-resistant lubricant (for example, lithium-based with the label Water Resistant) and conduct prevention at least once a year, changing the lubricant and checking the oeds.

Also consider the seasonality of use: In winter, if you do not use the trailer, store it in a dry place, moisture residue in the brakes (if any) or in the hubs can freeze and lead to acidification.

Legal aspects and rights of category B

According to the current legislation (on the example of the Russian Federation and CIS countries), to drive a car with a trailer is enough category "B", if two conditions are met: the maximum permissible weight of the trailer does not exceed 750 kg, and the amount of allowed maximum weights of the car and trailer does not exceed 3,500 kg For a light trailer under a boat 420 cm this rule is usually met.

However, if you decide to buy a heavy two-axle trailer or your car is heavy on its own, category "E" may be required. Also important is the registration documents for the trailer (PTS, registration certificate) and license plate.

Another important point is retroreflective elements: the side and rear of the trailer should be red catafos, and the front should be white. The absence of reflectors is grounds for a fine, since in the dark the dimensions of the trailer must be read even with the lights off.

⚠️ Warning: Trailer overloading is not only a safety risk, but also a legal liability, and if the actual weight exceeds the permitted weight by more than 20-30%, it may be considered a violation of the rules of carriage of goods.

Remember, the insurance policy is not valid for the trailer itself, the liability is covered by the truck policy, but if you rent the trailer or use it for commercial purposes, the insurance conditions may change.

Frequently Asked Questions (FAQ)

Do I need to remove the motor when transporting on a trailer?

For 420 cm PVC boats, the answer depends on the weight of the motor and the design of the trailer. Light motors (up to 20-25 kg) can be left if the trailer has a reinforced transom stop. Heavy four-stroke motors are better off, because when shaking they create a lever that can damage the transomania of the boat or the trailer's trayboard.

What pressure should be in the tires of the trailer?

The pressure depends on the type of tire and load. For standard R13 passenger tires, it usually requires from 1.8 to 2.2 atmospheres. However, for a laden trailer, the pressure is often recommended to be kept closer to the upper limit (2.0-2.2 atm) to avoid overheating of the tires and cord deformation. Always check the marking on the sidewall of the tire - there is a maximum parameter.

Can I tow a trailer with a boat in reverse?

Yes, you can, but it takes skill. The 420 cm boat trailer has a fairly long base, which makes it easier to maneuver compared to short trailers, but the inertia of water (if the boat is not drained) or just the weight of the load requires smooth steering. Remember, in order for the trailer to turn left, the steering wheel of the car must turn right, and vice versa.

How to protect the boat from UV light during transportation?

PVC is afraid of prolonged exposure to direct sunlight, especially in heat. If you plan a long stay or a trip on a sunny day, cover the boat with an awning or a special light-protective cape, this will prevent fading of the fabric and reduce the strength of the polymers, and it is also useful to use protective sprays with UV filters.