Transportation of large-sized swimming vehicles requires a special approach to the choice of tractor. MZSA dual-axle boat trailer It has become the standard of reliability for boat owners from 5 meters in length, and unlike uniaxial boats, it provides better stability on the track and distributes the load more evenly.
The Russian manufacturer Moscow Plant of Specialized Cars has established itself as a supplier of equipment adapted to difficult road conditions. Spring suspension And the galvanized bodywork makes these trailers virtually immortal with minimal maintenance, so let's look at why the two-axle version is becoming the preferred choice for a serious boating.
The choice between one and two axles is often dictated not only by the length of the vessel, but also by its total weight. If your boat with engine, fuel and equipment exceeds 750 kg, the law requires the braking system, and the biaxial scheme works most efficiently here. safety on the road.
Advantages of a two-axis design over a single-axis one
The main difference is the weight distribution: four wheels instead of two create a large area of contact with the roadway, which is critical for heavy loads. Load capacity These models are much higher, allowing the transport of massive metal boats or large PVC boats with powerful engines without the risk of overload.
Stability at high speeds is another powerful argument: a dual-axle trailer is less prone to wagging ("wagging its tail") when overtaking trucks or in lateral winds. rotational It's offset, and the inertia is extinguished by a pair of axes working in tandem.
⚠️ Warning: Even with two axles, always check the tire pressure before each trip. Other pressures can cause the tire to wear unevenly and the trailer to move away.
In addition, in the case of a puncture of the wheel, the two-axle design allows you to drive to the tire fitting on your own, relying on the adjacent whole wheel. persistence The design saves from the need to call a tow truck in the middle of the track.
- 🚛 Increased stability on the track and the lack of the effect of "wagging".
- ⚖️ Equal distribution of load on the road surface and frame.
- 🛡️ The possibility of safe transportation of goods weighing up to 3000 kg (depending on the model).
- 🛞 Mobility when punctured wheel (you can reach the service).
Key features of the suspension and frame of MZSA
The engineers at the plant have been betting on time-tested solutions. Most biaxial models use the same technology. spring-suspensionIt is highly reliable, simple to design and able to withstand impact loads on bad roads, which is characteristic of the entrances to many bodies of water.
The frame and the breather are made of steel profile and covered with hot galvanizing. corrosion-proofingUnlike the dyed ones, the zinc coating regenerates itself when it scratches, protecting the base metal from rust.
Technical nuances of springs
Resins require minimal maintenance, but they can eventually sink. Unlike air suspension, repairs are cheap and available in any garage, and replacement of sheets takes a little time.
An important element is the mechanism of adjusting the pads, which allows you to adjust the position of the supports to a specific boat hull, ensuring the correct hangingThe displacement of the centre of gravity to the drawer should be about 10% of the total mass, which guarantees stable behavior of the road train.
The corrosion protection also uses special treatment of fasteners. However, owners should remember that even galvanized metal requires maintenance, especially after use in salt water. resource tech.
Popular models and their specifications
The range of two-axle trailers of MZSA is extensive and covers the different needs of water-powered engines, the most popular are the models with indexes 8193, 8194 and 8195. load capacity and the dimensions of the platform.
The 8193 is often chosen for boats up to 6 meters long, has a compact breather and a convenient locking system, the more powerful version of the 8195 is designed for heavy metal boats and is equipped with a reinforced frame. boat-boat.
| Model | Max. load mass (kg) | Lomenement length (mm) | Type of suspension |
|---|---|---|---|
| MISA 819311 | 1800 | 5600 | Resorbed |
| MISA 819314 | 2300 | 6200 | Resorbed |
| MISA 819511 | 2500 | 7000 | Resorbed |
| MISA 819514 | 3000 | 7500 | Resorbed |
All models come with a winch stand that can be mounted in different positions, which gives flexibility when loading boats with different transom angles. Universality The design allows the use of a single trailer for different boats during the season.
Rules for safe loading of the boat
The process of placing a vessel on a two-axle trailer requires skill and adherence to technology. Incorrect loading can lead to skewing and even rollover. The first thing you need to do is level the trailer, mount it on a flat platform or use it. support-wheel I was breathing for height adjustment.
You have to approach the water at an angle close to 90 degrees to prevent the trailer from slipping sideways. After the boat is immersed on the lodgings, it is important to immediately fix the bow. Nose accent It must fit tightly to the fore, preventing the vessel from moving forward when braking the car.
☑️ Checking before leaving the water
You don't just have to rely on a winch cable to hold you when you're driving. You have to tighten the rope, not hold it on the track. You have to use your ratchet belts, throwing them over the boat hull, and you're going to attach them to the trailer. ligature systems.
Pay special attention to the transom supports, which should support the feed, but not press it too hard to not deform the transom. Adjust the height of these supports is by repositioning the bolts in the openings of the frame. geometry The laying of the boat prolongs the life of the boat and the trailer.
Brake system and traffic police requirements
According to traffic regulations, trailers with a gross mass of more than 750 kg must be equipped with brakes. Dual-axle models of MZSA usually have a total mass above this threshold, so they are equipped with brakes. lever-bar systemIt activates automatically when the vehicle is braking.
The principle of operation is based on inertia: when the tractor slows down, the trailer inertia "pushes" on it, and a special runner on the breather acts on the cables, spreading the brake pads, it is a reliable mechanical system that does not require electrical control from the driver.
⚠️ Warning: Check the integrity of the brake cables and lubrication in the mechanism before each trip. Snatching the brakes can lead to overheating of the hubs and jamming of the wheels.
To control such a system, a car equipped with the appropriate tractor-coupling Category E is also required if the total mass of the train exceeds 3,500 kg. In other cases category B is sufficient, but with a trailer weight limit of up to 3,500 kg.
Regular maintenance of brakes involves adjusting the gap between the pads and the drums. Over time, the friction linings are erased, and the lever stroke increases. regulation It ensures effective braking in any situation.
Operation and seasonal services
The long life of the MHSA equipment depends on its maintenance. Despite galvanizing, after each trip on salt water or roads treated with reagents, the trailer must be thoroughly washed, the water must be fresh, and the pressure must be strong enough to wash salt from hard-to-reach places of the frame.
Bearing hubs require regular lubrication, and the plant recommends this procedure once a year or every 10,000 km of run. lithium lubricant prevents washing out of the consistency composition and the appearance of rust inside the hub.
With prolonged storage of the trailer (in winter), it is recommended to hang it on the stands, removing the load from the springs and tires. This will prevent the appearance of "flat seats" on the tires and fatigue of the metal springs.
Rubber elements like jacks and anthers also need attention. Dry rubber cracks and loses its properties. Periodic treatment with silicone grease helps to maintain the elasticity of parts. Visual examination Before the season, it will detect cracks or damage in advance.
Remember to check the wheel nut tightening. After the first trip on a new trailer or after removing the wheels to replace the rubber, you need to re-stretch the fastener. Vibration on the road can weaken the connection, which is dangerous for the body. safety movement.
The main secret of the durability of the trailer MZSA - regular washing from salt and dirt immediately after operation, and not "on the residual principle."
Frequently Asked Questions (FAQ)
Do I need category "E" to drive a two-axle trailer MHSA?
Category E (BE) is 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 your car weighs 2,000 kg and the trailer weighs 1500 kg (amount of 3,500), then category B is sufficient. However, if the amount is greater than 3,500 kg, the rights of category BE are mandatory.
Can I transport an inflatable boat on a two-axle trailer?
Yes, you can. The two-axle trailer of the MZSA is great for transporting large inflatable boats with powerful engines, the main thing is to adjust the lozenges correctly or use special flooring to evenly distribute the weight and not damage the cylinders. Sustainable The two-axis will only be a plus here.
How often should the bearings be lubricated in the hubs?
The recommended frequency is once a year or every 10,000 km of run. If you often immerse the trailer in water (especially hot or salty), the service interval should be reduced. Use only special lubricants for hub bearings that are resistant to washing.
What to do if the bolt of the attachment of the lodging is rusted?
Do not try to tear it off by force so as not to break the head. Treat the connection with penetrating lubricant (for example, WD-40) and leave it for a few hours. If the bolt does not unscrew, you can carefully heat it with a building hairdryer (not open fire, so as not to damage the zinc around), then try to unscrew it again.