Soviet industry gave domestic boaters a lot of legendary models, and among them a special place is occupied by the Soviet Union. Progress-2This boat was a direct continuation of the success of the first model, but it received a number of critical improvements that made it safer and more convenient for family cruising and fishing, and it was in this modification that designers began to implement solutions that later became the standard for the entire class of small aluminum vessels.
The main purpose of the upgrade was to increase stability and reduce the risk of rollover, which was a weakness of the predecessor. Engineers increased the width of the hull, which immediately affected the stability of the wave. Many owners still use these boats, valuing them for their safety. killability and ease of service, despite the age of most of the copies.
Today we will discuss in detail the technical features of this model, consider the possibilities of installing modern engines and discuss the nuances of restoration. aluminum alloy D16ATThe, from which the body is made, will allow you to correctly approach the repair and tuning. A key feature of Progress-2 was the installation of a transom board, which allowed the safe use of outboard motors with a capacity of up to 30 hp.
Structural features and body
The boat's hull is made of aluminum-magnesium alloy, which is highly durable and corrosion resistant. Welds are made by argon welding, which ensures tightness and durability of the joints even in an aggressive salt environment. keel-bow The shape of the bottom, which has a positive effect on driving qualities.
The interior space is divided into several compartments, which increases the unsinkability of the vessel, buoyancy blocks are located in the bow, aft and on the sides, which allows the vessel to remain afloat even when fully filled with water, although operation in this state is highly undesirable.
- 🚤 Material: Aluminum alloy D16AT with a thickness of 2 mm.
- ⚓ Dimensions: Length 4000 mm, width 1500 mm, height of the board 500 mm.
- 🏗️ Weight: The curb weight is about 140 kg without motor and equipment.
It's important to note the quality of the interiors, and the factory paint was often not resistant enough, so the owners had to treat the interiors themselves with epoxy soils, which prevented the metal from oxidizing and white-colored at the contact points.
⚠️ Warning: When buying a used boat, carefully inspect the bottom for dents and cracks. Aluminum is prone to fatigue destruction with frequent impacts on waves or stones, especially in the area of zygomatic bends.
The boat's trawler is reinforced and has a special cut-out for the engine's lower unit, and the angle of the tray board is optimal for the engines of that era, but with the installation of modern engines, adjustments in the height of the suspension may be necessary.
Driving and handling
On the water. Progress-2 The boat is very stable, allowing passengers to move around the cockpit without the risk of a heavy roll, but the high side and flat bottom of the bow create sailing, which must be considered in windy weather.
To glid this model requires engine power from 10-12 hp. with a load of one or two people. With more powerful engines, the boat easily enters mode, but due to the lack of hydrocompensators and complex geometry of the bottom, dolphining can be observed at certain speeds.
The management has improved compared to the first Progress.It's still addictive. At low speeds, the boat can scour, requiring constant steering, and putting transom slabs or hydrofoils on the engine's lower unit helps stabilize the course and reduce the load on the helmsman's hands.
Engines and engine installation
Selection of power unit for Progress-2 Factory guidelines allowed for the installation of engines up to 30 hp, but real practice shows that the optimal range is 9.9-15 hp. More powerful engines can overload the transom and worsen the differentiation.
When you install a modern four-stroke motor, it's important to consider its weight, and shifting the center of gravity back can cause the nose to bury in a wave on the go, and to compensate for this, loading the bow or moving the battery forward becomes a necessity.
| Motor type | Power (hp) | Weight (kg) | Recommendation |
|---|---|---|---|
| Wind 8M | 8 | 26 | Budget option, low speed |
| Tohatsu 9.8 | 9.8 | 27 | Optimal balance of weight and traction |
| Yamaha 15 | 15 | 35.5 | Maximum speed, high flow rate |
| HDX T3.6 | 3.6 | 9.8 | Only for quiet driving and fishing |
The fastening of the motor shall be carried out through special holes in the transom or using rods, if the design of the transom board allows. anchor-bolt It is preferable because it eliminates vibration and the risk of engine loss.
⚠️ Warning: Never exceed the maximum recommended power of the engine. exceeding the limit of 30 hp can lead to the destruction of the transom and flooding the boat at full speed.
Tuning and modernization of the boat
Owners Progress They often resort to modifications to adapt the boat to modern comfort requirements. consoleNot only does this improve ergonomics, it also allows you to install a windshield that protects you from splashes.
Another important element of modernization is the improvement of the buoyancy blocks system, which can become saturated with moisture over time, losing its properties, replacing it with closed-cell polyethylene or pouring voids with closed-cell mounting foam significantly improves safety.
☑️ Checklist of modernization Progress-2
To increase comfort, soft seats are often installed on rotary seats, which requires drilling additional holes in the body, which must be carried out with the help of sealing technology, and the installation of anchor winches and holders for rods is also popular.
Repair and maintenance of the hull
The aluminum case requires regular inspection, especially after the navigation season. The main enemy of the metal is electrochemical corrosion, which occurs when contact with other metals or vagus currents. zinc protectorsIf they're installed.
Small dents can be repaired with rubber hammers and wooden bars. For more serious damage, argon welding is used. Before welding, you must carefully clean the surface to shine, removing the oxide film, otherwise the seam will be poor quality.
If you find a leak, don't rush to brew the hole. First, identify the cause. Often cracks are caused by metal stress, and in such cases, it's better to put an aluminum patch on the rivets using a sealant than to create a new stress point by welding.
Transport and storage
Dimensions Progress-2 It is possible to transport it on a standard passenger trailer, but because of the length of 4 meters, you need to be careful when maneuvering. The boat must be based on the keel and transom stops, the load distribution must be uniform.
If stored on water for a long time, fouling vegetation can be a problem. Regular washing of the bottom and treatment with anti-fouling compounds will prolong the life of the hull. For winter storage, the boat is better turned upside down or installed on the keelblocks in a dry ventilated room.
| Parameter | Meaning | Note |
|---|---|---|
| Load capacity | 400 kg | Including the weight of the motor and the people |
| Passenger capacity | 4 people. | With equipment in mind |
| Max. Power. | 30 hp | Passport. |
| Permissible wave | 0.6 m | For open water. |
⚠️ Warning: When transporting long distances, be sure to use safety cables, passed through the nose and aft rim. Vibration on the track can weaken the regular fastenings.
Frequently Asked Questions (FAQ)
Can a 40 hp engine be installed on Progress-2?
Formally, the passport maximum power is 30 hp Installing a 40-horsepower engine is physically possible, but this puts a critical load on the transom and shifts the center of gravity. This requires a serious alteration of the aft part and is not recommended without engineering calculations.
What is the alloy used for the body and can it be cooked?
The body is made of aluminium alloy aircraft D16ATYou can boil it, but only by argon welding using a filler of the same brand, and conventional welding or gas welding will burn through and destroy the metal structure.
Do I need to paint an aluminum boat inside?
Painting inside is not necessary if the boat is used in fresh water, but treatment with epoxy soil or special aluminum formulations will prevent oxidation and make it easier to wash from dirt and oil.
Where can I find the plans for Progress 2 for repair?
The original drawings can be found in the archives of the KYA magazine (boats and yachts) from the 60s and 70s or in specialized powerboating forums. Often enthusiasts post scanned versions of passports with dimensions.