When choosing a boat for fishing or family vacation, one of the key parameters is its weight, especially if you plan to transport a vessel on the roof of a car or lower it from the gently gently sloping shore without using a trailer. Kazan 5The silk-powered jet, produced by Kazan Gorbunov Aviation Plant, remains one of the most popular "metal horses" on domestic water bodies, and the question of its exact weight worries many aquatic engines. Understanding the real numbers is necessary not only for logistics, but also for the correct selection of power. outboardWho can take the boat to the plane.
It should be noted that the dry weight of the case is not a fixed value, but a variable that depends on the year of release, specific modifications and configuration. Factory data often indicate the weight of the base version, but in practice, kilograms from reinforced transom, handdukes, painting and accumulated over the years of equipment are added to it. Aluminum-magnesium alloyThe corrosion resistance of the body, from which the body is made, has excellent corrosion resistance, but its density dictates its operating conditions.
In this article, we will discuss in detail how much an empty hull weighs, how the weight varies depending on the modifications, and what the maximum permissible weight is for safe operation, you will learn why even a small excess of load capacity can become critical for the stability of a vessel and how to correctly calculate the total weight of a curbed boat.
Technical specifications and mass of various modifications
The Kazanok range of the fifth series includes several modifications that vary significantly in their design and, accordingly, in weight. Kazan 5The hull weighed about 190 kg, making it one of the lightest in the class of four-seater motorcycles. Kazan 5MThe weight of the boat increased to 200 kg due to the introduction of boules that increase the stability of the vessel on the waves.
Further evolution of the model led to the appearance of versions. 5mm and 5MK, where changes have affected the shape of the nose and the design of the transom. 5mm And it got a more powerful transom, which can withstand up to 35 hp, which led to a heavier aft. Kazan 5MKThe hull weighed 220-225 kg due to the altered geometry of the nose and the enhanced body set designed for more severe swimming conditions.
It is important to understand that the weight is indicated for a dry body without engine, fuel, anchor equipment and passengers. The actual operating weight will always be much higher than the factory specifications.
| Modifications | Body weight (kg) | Years of issue | Design features |
|---|---|---|---|
| Kazan 5 | 190 | 1972-1978 | Basic version, no boules |
| Kazan 5M | 200 | 1978-1988 | Added bules for stability |
| Kazan 5MM | 210 | 1988-1990 | Strengthened transnec, altered nose |
| Kazan 5MK | 225 | 1990-1995 | Reinforced set, heavy load capacity |
⚠️ Warning: When buying a used boat, don't blindly look at data-sheet figures. Over decades of operation, the hull could become overgrown with layers of paint, and the holds could accumulate silt and water, which will add another 10-15 kg to the total weight.
Effect of body weight on driving performance
The weight of the boat directly affects it. hydrodynamic specifications For a lightweight Kazanka 5 weighing 190 kg, there was enough 10-12 hp to reach the 30-35 km/h bar with a single driver. However, heavier versions, such as the 5MK, require 15-18 hp to achieve similar performances, since the inertia of the more massive body requires more traction to break away from the water.
Excessive weight negatively affects handling on excitement: a heavy boat becomes more inert, reacts less to the steering wheel shift and can “burrow” with its nose when faced with a steep wave if the center of gravity is shifted incorrectly. On the other hand, the lighter hull is more susceptible to lateral demolition by the wind and has a harder ride, which can be uncomfortable for passengers. The optimal balance is considered by many experts to be in the region of 200-210 kg, which provides sufficient weight. sluggishness and smoothness.
If the bulk is concentrated in the stern (heavy motor, full tanks), the boat's nose will be uplifted, which impairs visibility and increases the risk of wave overhang through the transom.
The golden rule: the heavier the boat, the more powerful the engine is needed to get on plane, but too powerful a motor on a lightweight body can lead to loss of control and goat.
Load capacity and limitations of GIMS
The issue of weight is inextricably linked with the carrying capacity, which for all modifications Kazan 5 This figure includes the weight of passengers, cargo, equipment, and the mass of the engine and fuel installed in the tank. Many beginners make the mistake of thinking that 400 kg is only the weight of people and things, forgetting to subtract the mass of the engine and gasoline, which often leads to overload.
According to the rules. GIMEWhen you are fully loaded (4 people 80 kg = 320 kg), you only have 80 kg for the engine, gasoline and gear. If you install a heavy four-stroke engine weighing 40 kg and fill a full tank (25 liters of gasoline weigh about 18 kg), you will have a free load capacity of less than 25 kg, which is barely enough for anchor and life jackets.
For safe operation with a full load of passengers, it is recommended to use light two-stroke engines or carefully control the amount of cargo in the haldukes. Exceeding the permissible limit reduces the height of the board above the water, making the boat vulnerable to flooding even with a slight excitement.
- 🚣♂️ The maximum load capacity is 400 kg, including the weight of the engine and fuel.
- ⚖️ The weight of one person for calculations is taken equal to 75 kg according to the standards.
- ⛽ A liter of gasoline weighs about 0.73-0.75 kg, do not forget to take into account the mass of the canisters.
Transportation and installation on the roof of the car
One of the main advantages of aluminum boats over fiberglass analogues is the ability to transport them on the roof of a passenger car. Kazan 5 The 200+ kg makes this a challenge, and it's almost impossible to lift that load up to the rooftop alone and extremely dangerous to health, so you need either a partner or a special inertial winch roller.
When transporting on the roof, it is important to consider not only the static weight, but also the dynamic loads that arise when driving. The roof of the car should be designed to load at least 70-80 kg (standard for many cars), so the distribution of the weight of the boat by roof area or the use of reinforced crossbars is a must. If your car has restrictions on the load on the roof, the only safe option is to use the car. trailer Or a carriage.
☑️ Preparation for lifting the boat to the roof
⚠️ Warning: Never try to put Kazanka 5 on the roof alone without using mechanical means. The risk of back injury or dropping the boat on the car is too great.
Weight consideration when choosing an outboard motor
Choosing a motor for Kazan 5 For lighter modifications (190-200 kg), the optimal engines are 9.9-15 hp Four-stroke engines (4-tact) are much heavier than two-stroke analogues of the same power. For example, a 15-horsepower 4-tact can weigh 45-50 kg, while a 2-tact will pull only 35-38 kg.
This 10-15kg difference may seem small, but for a boat with limited load capacity and low transom, it plays a crucial role. The heavy motor shifts the center of gravity back, causing the nose to pick up even at low speeds. If you plan long walks with full load, it is preferable to choose a lighter two-stroke motor or a model with a short lower unit leg, if the bottom profile allows.
Should I put the engine 20 hp on Kazanka 5?
Technically Kazanka 5 will withstand the engine up to 20-25 hp, especially the reinforced versions of 5MM and 5MK. However, the installation of such a motor requires the mandatory presence of boules (in early versions) and experience in driving, as the boat becomes very sharp and prone to yaw. For quiet fishing 15 hp - the optimal power ceiling.
The standard height for Kazanok is 400 mm (S). Installing a 500 mm (L) lower unit motor will require a transom buildup, which will also add extra weight to the structure and may disrupt balancing.
Practical advice on weighing and accounting of the mass
If you're buying a used boat or you're questioning the specifications of your vessel, the best way to know the exact weight is to weigh it, you can do it on a car scale or by using a no-brainer, fixing the boat on the trailer's breath. Remember to subtract the weight of the trailer to get the net hull mass.
Clean the hold regularly of water, dirt and unnecessary things. During the season, a boat can accumulate a significant amount of ballast in the form of wet rags, old anchors, spare parts and just garbage, which quietly increases fuel consumption and reduces speed. Keeping a loading log will help you better feel the behavior of the boat on the water.
Check the water level in the hold before each trip. Even 20 liters of water (20 kg) on the stern can significantly change the differentiation and worsen the yield on slicking.
Remember that every extra pound is not only a gas consumption, but also your safety on the water. Competent approach to weight accounting will allow you to enjoy fishing and cruising without the risk of unforeseen situations.
Frequently Asked Questions (FAQ)
Can you reduce the weight of Kazanka 5 to improve driving performance?
You can't drastically reduce the weight of the body, because it requires cutting metal, which will break the strength, but you can make the equipment easier: use lithium batteries instead of lead batteries, light cat anchors instead of cast-iron ones, and minimize the amount of stuff in the handuks.
What is the maximum weight of Kazanka 5M transom?
The standard transom is designed for motors up to 20-25 hp (about 50-60 kg). Installation of more powerful and heavier motors requires mandatory strengthening of the transom with additional spans and duraluminium linings.
Does the year of release affect the weight of the boat?
Yes, boats of the early '70s could have been lighter due to thinner skinning, but they are also less durable: '90s boats often have thicker metal and reinforcements, which increases their weight by 5-10 kg compared to earlier models.
Do I need to register Kazanka 5 in GIMS?
Yes, Kazanka 5 is subject to mandatory registration, as its weight exceeds 200 kg (for some modifications) or if it is equipped with a motor with a capacity of more than 8 hp (or 5 hp depending on the year of issuance of the PS and the current rules, which change, so it is worth clarifying the current standards).