For any water-engineer planning to purchase or operate the legendary Kazanka, the issue of the mass of the hull is one of the paramount. Weight of the boat Kazanka 5M4 without a motor It has a direct impact on the choice of vehicle to transport, the need to register with the GIMS and, critically, the choice of outboard motor power. Many owners forget that the 190 kilograms declared in the passport is only a base figure that accumulates additional tens of kilograms in real life.
In this article, we will discuss in detail what the mass of this popular aluminum How do you make modifications by year of production and why the actual mass can be significantly different from the factory specifications, and understanding these nuances will help you avoid problems with overloading the trailer or roof of the car.
There is a common misconception that all Kazankas weigh the same, but production It's been changing over the decades, from the thickness of the alloy you use to the seats and the handbags, each element contributes to the total number you'll have to lift or tow.
Factory specifications and body weight
According to the technical documentation issued by Kazan aircraft factory named after Gorky, the standard weight of the hull. Kazan 5M4 The standard version is 190 kg, which is relevant for cases made of duraluminium alloy D16AT, which is characterized by high strength, but has its own specific gravity, and this indicator is often decisive in calculating the carrying capacity of a passenger car.
However, it is worth considering that 190 kg is the mass of a dry housing without attachments. In real conditions, you need to add the weight of transom plates, built-in rundooks, windscreen and deck decking to this figure. Actual mass The number of boats ready to get on the water often exceeds 210-220 kg, which significantly changes the requirements for the towing capacity of the car.
Why is the real weight different from the passport?
In the production process, there were variations in the thickness of the skin sheets, and older models could be equipped with heavier plywood seats with dermatine, while modern replicas use lightweight plastic, and the presence of factory anti-corrosion coating, which can add up to 5-7 kg of weight, also affects the presence of a factory anti-corrosion coating.
It is important to note that The thickness of the bottom of Kazanka 5M4 is 2 mmThe sides and deck are made of a sheet thickness of 1 mm. This distribution of metal provides the necessary rigidity of the structure, but makes the bow part much heavier than the aft, which is important to consider when loading on the roof of the car.
Comparison of modifications: 5M, 5M3 and 5M4
The evolution of the Kazanok line has led to several modifications, each of which has its own mass-and-size specifications. Kazanka 5M4 With the 5M3's predecessor, you can see design changes that are designed to improve safety and comfort, which inevitably impacts weight. Higher sides and larger zygomatics add volume to the metal.
The 5M4 has a reinforced transom designed for higher power engines, which also increases the weight of the aft end, and unlike the lighter versions, it uses a scheme with longitudinal redans that improves driving performance, but requires additional stiffness ribs. Weight difference Between early and late series of release can reach 15-20 kg.
- 🚤 Kazan 5M: Basic version with a minimum set of options, the easiest in the lineup.
- 🚤 Kazan 5M3: An improved version with elevated sides, which has become a folk classic.
- 🚤 Kazan 5M4: Upgraded version with reinforced body and altered geometry of the nose.
When choosing between used versions of different years of production, pay attention to the condition of the metal. Corrosion and multiple repairs using steel patches can significantly increase the weight of the boat, turning light aluminum into a heavy hybrid.
Effect of metal thickness on displacement
One of the key factors determining weight Kazan 5M4Factory standards used to use sheets of certain calibration, but in the face of scarcity or home repairs, owners often changed configurations. Using thicker metal to replace rotten areas is a common practice that negatively affects buoyancy.
Increasing the thickness of the skin even by 0.5 mm over the entire area of the body can add up to 30-40 kg of excess weight. If the rated carrying capacity is 400 kg, then each extra kilogram of the hull weight takes away the ability to take on board an additional cargo or passenger.
When buying a used boat, use a magnet. If the magnet sticks to the sides or bottom, then there are steel patches that are much heavier than aluminum and are susceptible to corrosion.
Weight is particularly critical for boats that are planned to operate with low-power engines. Heavy hulls require more power to get on plane, which leads to fuel overruns. Optimal balance for the engine. Kazan 5M4 is considered a motor with a capacity of 30-40 hp, which is able to effectively push the loaded body.
Transportation: the roof of the car or trailer
Transportation Kazan 5M4 It's particularly acute because of its size and weight, the hull is 4.6 meters long and 1.6 meters wide, and even a weight of 190 kg in its pure form is the limit for many passenger cars when placed on the roof, and according to traffic rules and common sense, lifting such a load requires the participation of at least two people and the use of special guides.
When calculating the load on the roof, you need to take into account not only the weight of the boat, but also the weight of the trunk, as well as the dynamic loads that arise during movement. Permissible load The roof of most sedans and hatchbacks rarely exceeds 75-100 kg, making the transportation of Kazanka on the upper arcs risky and often prohibited by the automaker's instructions.
The safest and most convenient way of transportation is the use of specialized boat-trailerIn this case, the weight of the boat is distributed on the axles of the trailer, and the load on the car is placed on the farcop, which is usually designed for 1000-1500 kg. This removes questions about overloading the roof and simplifies the process of descent into the water.
☑️ Preparation for transportation on the roof
Weight distribution and centering
Correct centering Kazan 5M4 Because of the design, the bulk of the boat is concentrated in the bow, where the forepeak and massive zygomatic curves are located, and when you put a heavy motor on a transom and you put passengers in the rear seats, there is a stern different that needs to be compensated.
Incorrect distribution of cargo can lead to yawing boats on the course, difficulty in plane and even flooding with a wave through the transom. Centre of gravity It should be in the mid-spangout area or slightly closer to the nose to ensure optimal swelling.
| Element | Approximate weight (kg) | Location. |
|---|---|---|
| Body (empty) | 190 | Even with the shift in the nose |
| Motor (30bhp) | ~60 | Tranza (feed) |
| Fuel tank (25 l) | ~20 | Cockpit (under the seat) |
| Anchor and equipment | ~15 | The forward trunk |
To improve driving performance, many owners move the battery and fuel tanks closer to the nose to balance the heavy motor. shifting the center of gravity too far into the nose can lead to the burrowing of the nose in a wave at full speed, which is fraught with loss of control.
Registration in GIMS and power restrictions
Massa Kazan 5M4 plays a key role in the registration procedure in the GIMS. According to the current legislation of the Russian Federation, small vessels weighing up to 200 kg and with an engine power of up to 8 kW (about 10.8 hp) are not subject to registration. However, the Kazanka even in the minimum configuration weighs more than 200 kg, which obliges the owner to register the vessel regardless of the engine power.
The factory recommendation for engine power for this model is up to 30 hp, although the reinforced transom version of 5M4 allows you to install engines with a capacity of up to 40-45 hp Exceeding the recommended power can lead to the destruction of the transom, especially given the age of many housings and possible fatigue of the metal.
Kazan 5M4 is subject to mandatory registration in GIMS, as its weight exceeds 200 kg, regardless of the power of the installed engine.
When registering, the inspector may request documents confirming the weight of the vessel. If the boat's ticket indicates a weight of 190 kg, and in fact the boat with the installed equipment weighs more, this may raise questions when weighing, so it is important to have up-to-date data on the technical condition of your boat.
Frequently Asked Questions (FAQ)
Can I transport Kazanka 5M4 on the roof of the sedan?
Theoretically, you can have a roof that is designed to carry a load of more than 75 kg and specialized mounts are used, but a weight of 190+ kg is critical for most passenger cars, it is safer to use a trailer or look for assistants to constantly check the mounts.
What is the maximum weight of the motor that the transom can withstand?
Tranza Kazan 5M4 It is also reinforced compared to previous models and is designed for outboard motors with a capacity of up to 40 hp (about 70-80 kg of weight), Installation of more powerful engines requires additional alteration and strengthening of the transom, which is not always safe.
Do I need to register Kazanka with a 5 hp engine?
Yes, you need. exemption (exemption from registration) is valid only for boats weighing up to 200 kg And with a capacity of up to 8 kW. Since the weight of empty Kazanka 5M4 is 190 kg, any added cargo (motor, tank, anchor) or the fact of exceeding the weight of the hull 200 kg (including equipment) makes registration mandatory.
How many people can accommodate Kazanka 5M4?
Passport capacity is 4 people, however, when fully loaded (4 passengers + equipment), the boat lands quite low, and the buoyancy margin decreases. For comfortable and safe fishing, it is recommended to take on board no more than 2-3 people plus equipment.