Owners of small boats are well aware that the descent of the boat into the water without specialized equipment turns into hard physical work. Boat cart It's not just a convenience, it's a necessity that protects the owner's back, preserves the integrity of the hull and allows the boat to be safely transported on public roads, and a properly selected trailer eliminates the risk of damage to the skin when dragging along the gravel bank or sand.
Many beginners make the mistake of buying the first trailer mechanism they come across without thinking about compatibility with a particular model of the vessel. Keelboat It requires only supports, and a flat-bottom is a completely different design, and in this article we will discuss the technical nuances that will help you make an informed decision or build a reliable unit yourself.
It is important to understand that loading capacity The geometry of the frame, the type of breath and the quality of the winch play no less a role in the safety of transportation. Ignoring these factors can lead to an accident on the road or damage to an expensive vehicle. lantern when loading.
Criteria for choosing a reliable trailer
When buying a finished product or ordering an individual production, the first thing you need to do is analyze the specifications of your vessel. Overall length If you're planning to change the boat to a larger one in the future, it makes sense to immediately consider the option of a margin along the length, so as not to spend on a new trailer after the season.
The two main options on the market are painted steel and galvanized steel, and the painted models are cheaper but require regular maintenance, as salt water quickly breaks down paint and provokes. corrosionGalvanized analogues last for decades without requiring coloring, but their cost is much higher.
⚠️ Warning: When choosing a steel trailer, be sure to check the quality of welds. Poorly welded joints are foci of future rust, which can weaken the frame design in a couple of seasons of active use.
Another critical parameter. load-carrying capacity of axlesThe total weight of the boat, motor, battery, fuel and equipment should not exceed the maximum load on the axle of the trailer, exceeding this limit leads to rapid wear of bearings, overheating of the hubs and, as a result, to a possible accident.
Types of support systems: lodgings or rollers
The support surface design is what comes in direct contact with the hull. There are two main types of systems: lounge and roller. Log trailers are long sleds covered with soft carpet, and they perfectly distribute the weight of the vessel throughout the bottom area, which minimizes the risk of hull deformation.
Log system It is preferred for boats with thin aluminum hulls or complex fiberglass models, which provide stable fixation when transported at high speeds, but these trolleys are less suitable for descent from the sloping sandy shore, because they require deep immersion in water.
- 🚤 Lodges provide better support for the body during long parking.
- 🛡️ The carpet protects the gelcoat from scratches and chips.
- 📏 Require a more accurate adjustment of the height of the supports under the keel.
Roller trailers are equipped with vertical and keel rollers, which make it easier to load, and the boat literally rolls onto the frame, which is convenient if there is no steep slip, but there is a significant disadvantage to this system: the contact points are very small, which creates high local pressure on the skin.
When using a roller system, roller bearings must be regularly checked, the jammed roller can turn into a fixed point of friction that instantly wipes the hole in the bottom. For heavy boats, roller bearing systems are often combined with additional lateral keels.
Roller adjustment nuances
If the rollers are set too high, the boat's center of gravity shifts upwards, which reduces the stability of the trailer on the road, and if it is too low, the load on the breather becomes critical, overloading the vehicle's coupling device.
Calculation of dimensions and compatibility with the car
Before you go for a purchase or materials for assembly, you need to make accurate measurements. Length of trailer The bow of the boat must not be more than 10-15% of the total length, otherwise an additional sign “large cargo” will be required.
The most important parameter is breath-loadAccording to the traffic regulations, the vertical load on the coupling device should not exceed 10% of the total weight of the trailer with a load, but should not be less than 25 kg for stability.
And you also have to consider the ground clearance of the car, and if you have a low sedan and the shore is steep, a standard trailer can squeak breath on the ground when you go down. frame-mount Or use special elongated breathing.
| Parameter of the boat | Recommended type of trailer | Features of operation |
|---|---|---|
| PVC up to 3.5 m | Light framed, roller-shaped | Possible transportation in a disassembled form |
| Aluminum 3.5-5 m | Login, galvanized | Protection from point loads is required |
| Glass-plastic 4-6m | Login with side support | High sensitivity to deformities |
| Boat over 6 m | Two-axis, reinforced. | Category E is required for rights |
Don't forget the weight of the trailer itself. Lightweight models weigh about 100-150 kg, biaxial models can reach 400-500 kg. Total mass The train must not exceed the maximum permissible mass of your vehicle specified in the PTS.
Manufacture of the cart DIY: step-by-step instructions
Building a homemade trailer is a challenge for those who know how to handle a welding machine and have basic mechanical knowledge. The first step is to design a frame. The optimal material is a profile pipe square, for example, 40×40 or 50×50 mm, with a wall of at least 3 mm.
After welding the main frame and strengthening the corners with the headscarf, you need to install a breather. The angle of inclination was breathed relative to the frame is usually 15-20 degrees, which ensures the correct position of the boat when diving. winch-stack.
☑️ Checklist of welder
The chassis must be fitted with a precise axis, which must be strictly perpendicular to the longitudinal axis of the trailer, and even a few centimeters of displacement will cause the trailer to wag on the road and cause uneven wear of the rubber. Self-made structures often use prefabricated passenger car axles or specialized trailer axles.
The final step is to install the support elements, and if you make the pawns yourself, use a hardwood timber or a profile pipe that is rubber-strewn or a special carpet, and you need to attach them through adjustable brackets to be able to adjust the height to different boats.
⚠️ Warning: When welding the frame, avoid overheating the metal at one point, which creates internal stress and can lead to cracks under dynamic loads.
Equipment and winches
No trolley is complete without a winch. For light boats up to 500 kg, a manual lever or drum winch is sufficient. Heavy boats require the use of electric models connected to the car's battery. Whistle capacity should be with a margin: if the boat weighs 800 kg, the winch should pull at least 1000-1200 kg.
The important element is the rope or the belt. Steel cables are strong but corrosive and can injure the hands when they break. Synthetic belts are safer and more comfortable to use, they don't rust and they're easy to wash, but they need to be regularly checked for scuffling and ragging.
The winch stand should be high enough that the angle of entry of the rope into the drum is minimal, so that the rope is not swirled, which leads to a jamming. nose-stamp with a roller that takes over the inertia of the boat when braking.
Lubricate the winch mechanism with water-resistant lubricant (such as Litol-24 or specialized marine lubricants) after each season.
Registration and requirements of the traffic police
In Russia, any trailers with a gross mass of more than 750 kg are subject to mandatory registration at the traffic police and obtaining license plates. If the mass is less, registration is not required, but the trailer must be equipped with reflectors and meet the requirements for dimensions. To drive a car with a trailer of category "B", the amount of the maximum permissible mass of the trailer and the car must not exceed 3,500 kg.
To register a homemade trailer, you will need to undergo certification in an accredited laboratory, which can cost more than the trailer itself, so many craftsmen buy a VIN frame from a factory donor trailer, and already they mount their own design for a boat.
When driving with a trailer, you must observe the speed limit: no more than 90 km / h on motorways and 70 km / h on other roads, and it is also prohibited to transport people in a trailer and by boat while driving.
Buying a trailer with documents (PTS) is the only legal way to avoid traffic problems when using a homemade design. "Gray" schemes with documents from another trailer can lead to confiscation of the vehicle.
Do I need an E category to transport a boat?
Category "E" to category "B" is only required if the permissible maximum mass of the trailer exceeds 750 kg and the total permissible maximum mass of the vehicle and trailer exceeds 3,500 kg. If the trailer weighs 600 kg, the usual rights of category "B" are sufficient.
Can I transport a boat without registering a trailer?
If the total weight of the trailer (live weight + weight of cargo) does not exceed 750 kg, registration with the traffic police is not required. However, you should be ready to prove the weight of the boat to the inspector if you have questions.
How to store a cart in winter?
Remove the wheels to reduce the load on the tires and bearings, metal parts should be lubricated with conservation grease, and carpeted padding should be removed and dried to avoid rotting.
In conclusion, a quality boat trolley is an investment in years without the problem of operating your vessel. Whether it is a factory model or a well-assembled unit, the main thing is to comply with technology and safety rules. Don't skimp on materials where it is about the strength of welds and the reliability of the chassis.
The proper preparation for the season begins with checking the condition of the trailer: inspect the frame for cracks, check the pressure in the tires, lubricate the bearings and make sure that the boat is secure, the only way you can focus on the main thing - the pleasure of fishing or cruising on the water, without fear for the integrity of your boat on the way to the reservoir.