The legendary fifth model Kazanka remains one of the most recognizable symbols of Soviet and post-Soviet small-scale shipbuilding. Despite the emergence of many modern PVC analogues and composite materials, this model is a very popular and innovative model. aluminum-magnesium alloy The Russian rivers and lakes still ply the vastness of the country, and the owners value it for its maintainability, simplicity of construction and the possibility of self-modernization.
In this article, we will discuss in detail what it is. Kazan 5You'll learn about the real-world stability, the power of the engine, and the nuances of operation that are often not mentioned in official instructions.
This boat was designed for the masses, so it's a no-nonsense design, but it's filled with practical solutions, and understanding the physics of how a vessel behaves on the water will help you avoid common mistakes in piloting and maintenance.
History of creation and design features
The design began in the mid-1950s at the Gorky Kazan Aviation Plant, where engineers were tasked with creating an affordable vessel for the masses using technology and materials from the aerospace industry. umm-5 - Alloy of aluminum with magnesium, which is characterized by high corrosion resistance and strength.
The hull was designed with riveted technology, which was an advanced mass production solution, and the absence of welds along the bottom and sides reduced the risk of electrochemical corrosion and made it easier to repair in the field, and the side and bottom have smooth contours, which positively affects the germination of the wave, although it does not make the boat fast.
⚠️ Attention: Despite the high corrosion resistance of the alloy, the anchorages of the transom and zygomatic stringers require regular inspection, and this is where microcracks from vibration most often occur.
A unique feature of the early models was the ability to install an outboard motor directly on the aft can without a remote transom, but this greatly reduced safety. turretThis allowed for more powerful engines.
Main technical specifications
For the correct selection of the engine and calculation of load capacity, you need to rely on accurate figures. The dimensions of the boat allow you to transport it on the roof of a passenger car (subject to compliance with traffic rules and the presence of reliable mounts), and a small weight facilitates the launch of one or two people.
The table below shows the key parameters of the standard modification, which may vary slightly depending on the year of manufacture and the specific manufacturer:
| Parameter | Meaning | Unit of measurement |
|---|---|---|
| Longest length | 4000 | mm |
| largest width | 1600 | mm |
| Height on midship | 550 | mm |
| Load capacity | 400 | kilogram |
| Passenger capacity | 4 | man. |
It is important to note that the real loading capacity 400 kg includes the weight of passengers, cargo, engine and fuel. If you plan to take four adults on board, the space for gear and engine will be minimal, and the optimal crew is two or three people for a comfortable fishing or walk.
The hull, without attachments, weighs about 150 kg. That's enough for drag-carrying, but it's quite acceptable for trailer transport. The aluminum hull is not afraid of hitting rocks or ice, making the boat all-season.
Engine installation and driving performance
One of the most talked-about issues is motor power. Factory guidelines often limit power. 12-15 hpBut the boat is able to withstand more powerful units, and the key factor here is not so much the strength of the transom, but the stability and safety of the crew.
When installing an engine with a capacity of more than 20 hp, the boat begins to glid, which radically changes the nature of its behavior. The speed with one person on board and a 20 hp engine can reach 30-35 km / h. However, with a full load, plane becomes difficult, and the boat goes into displacement mode.
Secrets of installation of a powerful motor
For safe operation with a 20-25 hp motor, it is recommended to move the engine compartment closer to the stern or use a remote transom to unload the nose and improve differentiation.
Fuel consumption is directly dependent on the mode of operation of the engine and loading. In economical mode (about 20 km / h), a two-stroke engine consumes about 5-7 liters of mixture per 100 km. Four-stroke analogues will be more economical, but heavier, which is critical for a small boat.
⚠️ Attention: Installing a motor with a capacity of more than 25 hp on a standard Kazanka 5 without reworking the cockpit and installing fences is dangerous and can lead to tipping over at corners.
Comfort and internal arrangements
Kazanka's interior is spartan, offering a wide range of tuning options, including two transom jars and a stern rod, and many owners immediately begin to refit, installing soft seats, gear knobs and tables.
To increase comfort, they are often installed tent Or a full-fledged windshield running awning, which allows you to use the boat in rainy weather and protects you from the sun, and the aluminum frame is easily welded or assembled on bolts yourself.
☑️ Checklist for interior modernization
Special attention should be paid to the floor. The mother floor is often just a set of removable floorboards or even absent (in early versions), Installing a solid plywood floor covered with linoleum or special paint greatly improves standing comfort and protects the legs from the cold metal.
Safety and stability on water
The safety issue for aluminum boats is particularly acute due to their low weight and high sailing. Resilience Kazanka 5 is rated as satisfactory but requires the driver to be careful, and sharp rudder shifts at speed can lead to a dangerous roll.
The design includes buoyancy boxes in the nose and stern filled with foam, a critical element that will keep the boat from sinking even when it is fully filled with water, but you don't have to rely on them alone - life jackets are a must.
When moving along the wave, the boat behaves gently, thanks to rounded contours of the bow, it does not slap on the water as much as flat-bottoms, but it does not cut the wave like keel vessels, the optimal wave height for safe passage is up to 0.5 meters.
To improve course stability and reduce yaw, it is recommended to install a small keel or zygomatic stringers along the bottom, if they are absent on your model.
Maintenance and repair of the hull
The main advantage of aluminum is the ability to quickly repair the hole, you can close the hole with cold welding, epoxy resin with glass fiber, or, in extreme cases, a wooden stopper for a while before the parking lot.
Although AMG alloy does not rust like steel, it is susceptible to oxidation and electrochemical corrosion when in contact with other metals (e.g. brass screws or steel transom), so all fasteners must be stainless steel or zinc coated.
Regularly washing a boat with fresh water after use in salt water or contaminated water bodies will prolong its life, and it is also worth checking the condition of the rivets, especially in the area of the cheekbones and transoms, where the loads are maximum.
Timely treatment of contact points of dissimilar metals with anticorrosion compositions is the key to the long service of the aluminum case without through holes.
Comparison with modifications and analogues
There are many modifications to Kazanka, and it is important not to confuse them when buying parts or evaluating capabilities. The 5 is often compared to the 5M, 5H and the more modern 5M2. The main difference lies in the shape of the nose and the presence of zygomatic stringers.
Modifications 5mm The 5H was designed to be a motor-on-a-tree, making it much safer than the earlier versions, and has sharper bow contours and zygomatic stringers, which greatly improves seaworthiness and reduces the risk of nasal burying in the wave.
Compared to modern PVC boats, Kazanka loses in weight and compact storage, but wins in the speed of access to the water, no risk of puncture and the possibility of installing a more powerful “iron” without restrictions on air temperature.
What is the real maximum speed of the boat Kazanka 5?
With the engine 10-12 hp speed is about 20-25 km / h When installing the engine 20-25 hp and minimum load can accelerate to 35-40 km / h, but it requires experience and is dangerous in windy weather.
Can I cook the body of Kazanka with ordinary welding?
No, aluminum requires special argon arc welding (TIG) using a filler wire of the appropriate composition. Conventional electric welding will melt the thin side and destroy the metal structure.
Should I paint an aluminum boat?
You don't have to paint, because the oxide film protects the metal, but paint with epoxy or polyurethane paints improves the appearance, reduces algae fouling and facilitates the washing of fuel.
How many people can be safely on the boat?
Although the passport capacity is 4 people, for comfortable and safe fishing with gear and motor, it is optimal to accommodate 2-3 people.