The question of the real weight of the Boolean Kazanka is a concern for every owner or potential buyer of the legendary Kazanka-M. It is not just idle curiosity, but a critical parameter that determines the choice of outboard motor, fuel consumption and, most importantly, safety of swimming in choppy conditions. The legendary Soviet “Kolbasa”, nicknamed for its characteristic sound and shape, has become the basis for thousands of homemade projects, but it is the presence or absence of side allotments that fundamentally changes the physics of the vessel’s behavior on the water.
Many beginners mistakenly believe that bules are just a decorative element or a way to increase the inner volume of the cockpit. aluminum-stuffing This increases the overall weight of the hull, which has a direct impact on the time of planing. If you plan to use the boat for an outboard motor of the minimum permissible power, each extra kilogram can be the decisive factor between a confident plane on the water and a heavy yaw with a constant risk of flooding the board with a wave.
In this article, we will discuss in detail the weight specifications of various modifications, from the good old "M" to more modern versions with the index 5M. You will learn why data-sheet figures can differ from reality, how the thickness of the metal affects and whether it is worth dismantling the Boolean structures in order to reduce the weight of the radiator. Understanding these nuances will help you make an informed decision when buying or upgrading your boat.
Design features and weight of the body
Boat hull Kazanka-M It is made of duraluminium alloys, which provides sufficient strength at a relatively low weight compared to steel counterparts. However, the presence of booleans, which are sealed compartments on the sides, adds to the total weight of a significant weight. The standard weight of an empty boat Kazanka-M without boules is about 138 kg, but with the installed allotments, this figure confidently exceeds 160 kg, and sometimes higher, depending on the year of production and the condition of the metal.
The thickness of the bottom and sides also plays a role. In older models, the metal could be thinner, but over the years it has become overgrown with layers of paint, sealants and additional reinforcements, which increases the mass. Aluminum alloy D16ATThe rods used in the production process are highly specific, but in mechanical damage (dents) require complex repair. Boils welded or glued to the sides create additional structural rigidity, but also add inertia when maneuvering.
It's worth noting that the weight is not evenly distributed, and the bulk is concentrated in the bow and in the transom, where the deck sheets and the cans are located, and the buoys, as they move around the perimeter, shift the center of gravity and increase the moment of inertia when rolling, which means that the boat with the boules reacts more slowly to the movement of passengers, but also returns the roll more slowly, which can be dangerous in some conditions.
⚠️ Attention: When calculating the total curb weight, remember that the weight of the boat is not only the hull; add the weight of the engine, fuel tank, anchor and crew; exceeding the carrying capacity on boats of the Kazanka type with boules is especially dangerous because of the low height of the board in the bow.
For an accurate understanding of the weight difference, we turn to a comparative table of specifications of different modifications. The data can vary depending on the configuration and year of production.
| Model boat | Body weight (kg) | With boules (kg) | Load capacity (kg) | Max engine power (hp) |
|---|---|---|---|---|
| Kazanka-M | 138 | 165 | 400 | 12 |
| Kazan 5 | 150 | 185 | 420 | 20 |
| Kazankah-5M | 145 | 175 | 400 | 20 |
| Kazankah-5M2 | 140 | 170 | 400 | 25 |
| Kazankah-5M4 | 155 | 190 | 420 | 35 |
The impact of Boolean on seaworthiness and sustainability
The boules on Kazanka's boat are a double-edged sword, and on the one hand, they significantly increase the stability of the boat afloat, and the boat gets wider, and it's harder to flip when you're fishing statically or you're moving the fisherman abruptly to the side. Floating The boulay allows the boat to stay on the water even in the full cockpit bay, which is a critical safety factor in an emergency.
On the other hand, when you're driving at high speeds, especially when you're excited, the bules start to act as brakes and yaw stabilizers, and they create additional water resistance, which requires more power to go into plane mode, and if the engine is weak, the boat with the buoys may never go into the plane, remaining in displacement mode, where fuel consumption is maximum and speed is minimal.
It's also important to consider aerodynamics. When the headwind is blown, the wide sides with the boules increase sailing, which makes it more difficult to control the boat, especially for inexperienced water-engineers. The wind starts to blow the boat down more strongly, requiring constant adjustment of course. However, when the sidewind wave is blown, the bulls quench the roll, making the swing softer and more predictable, which is important for long transitions.
To improve the performance of Kazanka with boules, experienced owners often cut the back of the boules (to the transom), leaving only the nose, which reduces the resistance of water at high speeds, keeping the buoyancy in the nose.
Many owners wonder if you're shooting or not? If you're a big water reservoir with a wave, the boules can save lives. If you're fishing in calm rivers and lakes where speed and maneuverability are important, their absence will make it easier for the boat to go to the plane and save fuel. Kazanka without boles becomes noticeably faster, but requires more careful handling.
Calculation of load capacity and passenger capacity
The cargo capacity of the boat Kazanka with boules is formally higher than without them, due to the increased volume of displaced water. rated carrying capacity is 400 kg, which implies the possibility of accommodating 4 people and a small cargo. However, in practice, given the weight of the hull with boules (about 165 kg), the buoyancy reserve is not fully used due to the low landing.
When loading a boat, it is important to maintain a balance. Centre of gravity The placement of heavy batteries, anchors and fuel reserves in the bow can lead to a buoyancy of the nose in the wave, which is deadly for Kazanka with its low sides. Bules help to keep the board above water, but do not save from being overwhelmed through the transom or nose if the wrong differentiation is made.
- 🛶 The maximum number of passengers is 4 people, but more comfortable than three.
- ⚓ Weight of equipment (anchor, ends, life jackets) should be taken into account first of all.
- ⛽ Fuel tank volume of 20-25 liters adds another 15-20 kg of weight.
The payload is calculated by subtracting the weight of the boat, the motor and the gear from the maximum displacement. If the boat weighs 165 kg, the engine 40 kg, the equipment 30 kg, then the passengers are left with about 165 kg. That is about two adults of average build, exceeding this limit makes the walk into a dangerous event.
⚠️ Warning: Never distribute the load evenly over the length of the boat if you have Kazanka with boules. Focusing weight in the nose dramatically reduces germination per wave, and in the stern - impairs handling and can lead to differentiation on the stern.
☑️ Checking before getting on the water
Technical specifications and requirements for the motor
Choosing an engine for Kazanka with boules is a search for a compromise between power and weight. Due to the increased body weight and resistance of boules, the minimum engine power for a confident getting on plane with two passengers should be at least 8-10 hp For single fishing, 5 hp may be enough, but the boat will be long to accelerate and difficult to go to mode.
The optimal option is considered by many engines with a capacity of 15-20 hp They allow you to bring a boat to plane with a full load and reach speeds of 30-35 km / h More powerful engines (25-30 hp) can be put, but with caution: turret Kazanki-M is not designed for excessive traction, and there is a risk of tearing off the transom board or deformation of the stern part of the body.
Fuel consumption is directly dependent on weight. A boat with a full-speed boules with a 15 hp engine will consume about 5-7 liters per hour. If you remove the boules, the consumption can be reduced by 10-15% due to improved hydrodynamics. For long-distance crossings, this is a significant savings, allowing you to take less fuel or swim longer distances.
It's important to get the right pitch. A heavy boat with boules needs a smaller pitch propeller so that the engine can spin to speed and reach power. Too much will lead to engine "failure", overheating and increased fuel consumption.
Secrets of tuning the transom
Many Kazanka owners reinforce the transom with steel or aluminum linings, which allows for more powerful motors, but increases the overall weight of the stern, which may require the installation of nose boules for balancing.
Self-manufacture and installation of boules
For those who choose to make bules DIY, it is important to choose the right material: optimally use the same alloy as the body, or similar in properties, for example, AMG. The metal must be at least 2 mm thick to ensure rigidity and buoyancy. A thinner metal can collapse when hit by a wave or ice.
The installation process requires careful surface preparation, the metal must be cleaned to shine, degreased and then proceed to welding or riveting, and the use of argon welding is preferable, since it gives a more accurate and durable seam, less susceptible to corrosion. galvanic pair Aluminum and steel (if steel bolts are used) will cause rapid corrosion, so all fasteners must be made of stainless steel or aluminum.
When designing the shape of the boules, avoid sharp angles that create water vortexes. Smooth contours will improve driving performance. You also need to provide technological holes for draining water and accessing the inside of the boules for inspection. Tightness is a top priority, so each seam needs to be checked with kerosene or air under water.
- 🔨 Use aluminum alloy rivets for installation if welding is not possible.
- 🧪 Treat the seams with anticorrosion compounds immediately after manufacture.
- 📏 Observe symmetry during installation so that the boat does not roll on the move.
Is it worth the effort? If you don't have aluminium skills, it's easier to buy a finished lining or a used kit. Making mistakes can cost the boat stability, and in the worst case, it can lead to a loss of buoyancy if the slim boulet gets water.
Maintenance and repair of aluminum housing
Kazanka's aluminium hull with boules requires constant attention, and the main enemy is electrochemical corrosion, especially if the boat is often standing on the water. Anodic protection Bules, being insulated compartments, also need to be checked: if water gets inside, it can freeze in winter and rip the metal from inside.
Regularly inspect the mounting of the boules to the body. Vibration and shocks to the wave can lead to fatigue cracks in the metal or loosening of the rivets. Any crack must be immediately welded or patched. Ignoring minor defects will lead to rapid spread of corrosion and loss of leakage.
The boat should be stored in a dry room in winter, and if you leave the boat with the boules outside, moisture can be preserved in them. When it freezes, the water expands, which is guaranteed to deform or rupture the thin-walled structures of the boules. It is recommended to turn the boat over or leave the technological holes open.
⚠️ Warning: When washing a boat, do not use aggressive chemistry and abrasive brushes. Damage to the aluminum oxide film will trigger a corrosion process that develops especially rapidly in the welded seams of the boules.
Regular maintenance and proper preservation for the winter prolong the life of the aluminum boat for decades, maintaining its strength and driving qualities.
Frequently Asked Questions (FAQ)
Can I remove the boules from Kazanka-M and how will it affect the speed?
Yes, you can cut the boules or cut them off with a Bulgarian, which will reduce the weight of the boat by about 20 to 25 kg and improve hydrodynamics, and the boat will get faster on the plane, increase the top speed, but reduce the stability in the parking lot and the buoyancy when filled with water.
What is the maximum weight of Kazanka with boules?
rated carrying capacity is 400 kg, which includes the weight of people, motor, fuel and equipment, and exceeding this weight is dangerous, since the boat has low sides and can easily draw water even in small waves.
How to fix the crack in the aluminum boule?
The best way is to use argon welding with a filler rod of a similar alloy (AMG), a temporary solution that is epoxy glue with fiberglass reinforcement or cold welding for aluminum, but this does not guarantee durability.
Do I need to paint the inside of the boules?
No, the inside of the sealed boules doesn't need to be painted if they're really sealed, but if there's a risk of moisture, anticort treatment is not superfluous, and the key is to allow air to evaporate the condensate if it forms.
Does the weight of the boules affect fuel consumption?
Yes, it does. The extra weight and the water resistance require more power to propel. At low speeds, the difference is subtle, but when you go to the plane and go at high speeds, the fuel consumption can be 10 to 15 percent higher than a boat without boules.