The metal shipbuilding industry in our country has deep roots, and the model is a very important one. LR 520 This is a striking example of a small motor boat designed for fishing and recreation on the water, and this boat, made of aluminum-magnesium alloy, combines simplicity of construction and sufficient seaworthiness for calm water bodies, and many water-engineers choose this option because of its maintainability and durability of the hull.
However, despite the apparent simplicity, the boat has its own features that must be considered before buying. hull It's made of sheet material, which is tough, but it requires careful attention to welds. In this article, we'll go into detail about what it is. LR 520How it behaves on the water and what to pay attention to when operating.
It's worth noting that this model is often the subject of tuning and modernization, owners are looking to improve the ergonomics of the cockpit and improve comfort on board, and understanding the basic design will help you to competently approach the refinement of your boat.
Design features of the LC 520 body
The bottom of any boat is the bottom of it. LR 520 We're dealing with a classic keeled shape, and the kilewitt angle on the transom is usually about 10 to 12 degrees, which is a trade-off between softness and planing. Snooty splash-offers Here they play an important role, diverting water from the sides and improving the course stability.
The material is an alloy of AMg5 or AMg6, which is excellent in resisting corrosion in fresh water. The bottom thickness often varies depending on the year of release and the particular series, but usually is at least 3-4 mm. impact-resistance When in contact with bottom obstacles, which is critical for anglers exploring shallow waters.
The slab is reinforced and designed for outboard motors up to 30-40 hp It is important to understand that exceeding the recommended power can lead to deformation of the aft. The design of the board is also reinforced by a bolt, which protects not only the boat itself, but also serves as a support for mooring.
β οΈ Attention: When you look at the used LR 520, pay special attention to the state of the welds in the nose, which is where microcracks most often occur due to constant shocks to the wave.
For additional protection, some owners have keilbank It's a non-standard element, but it extends the life of the hull when it's in active operation under difficult conditions.
Ergonomics of the cockpit and internal arrangement
Interior space LR 520 The cockpit is spacious enough to accommodate 3-4 people, although the most comfortable on board feel two adults and a child. Banks. (seats) are usually made of plywood or aluminum and may be removable or stationary, depending on the modification.
The bow is often a knuckle or a storage area for equipment, ideal for anchor boxes or dry soldering, but the standard layout may seem spartan, so many owners start to use it right away. modernization interior.
Installing soft seats on swivel seats greatly improves comfort on long transitions, and itβs also worth considering putting an extra layer of noise insulation to the bottom if youβre planning to use a trolling boat where silence matters.
- π£ Convenient handbags for storing gear and personal belongings.
- β Strong ducks and bolts for reliable mooring.
- π‘οΈ Possibility of installing windscreen to protect against splashes.
- π¦ Pre-designed places for fastening navigation lights.
Driving qualities and behavior on the wave
How he behaves. LR 520 This is probably the most important question for a potential buyer, because the boat is confidently holding a wave up to 0.5-0.7 meters high, gently passing through it thanks to its keeled bottom, and it comes out quickly enough even with an average engine.
When moving against the wave, there is a moderate impact load on the body, characteristic of metal boats of this dimension. Course stability It's highly rated -- it doesn't scour and it's very straight, which reduces the helmsman's fatigue, but in high-speed corners, you can roll, and you have to be prepared.
In calm, the boat is very manageable, light weight allows you to easily maneuver even in low currents, it is important to correctly distribute the weight of passengers and cargo: shifting the center of gravity in the nose can lead to the bulge in the wave, and excessive roll on board can lead to a decrease in speed.
The effect of wind on sailing
The LP 520 is high enough to create a certain sailing speed, and in case of strong side winds in the parking lot or when drifting, the boat can demolish, it is recommended to always have an anchor or moorings at hand to fix the position.
To improve driving performance, transom plates or hydrofoils are often used on the motor, which allows you to quickly take the boat to the plane and stabilize the course. engine setting The height of the suspension also plays a key role in achieving maximum efficiency.
Technical specifications and compatibility with motors
Selection of power unit for LR 520 The manufacturer usually recommends motors up to 30-40 hp, which allows speeds of up to 40-45 km/h with full load, which can be exceeded, but requires transax reinforcement and changes in data-sheet figures.
Below is a table with indicative data that will help determine the choice of motor:
| Parameter | Meaning | Note |
|---|---|---|
| Body length | ~5.2 m | Overall length |
| Width | ~1.6 - 1.7 m | Midel. |
| Load capacity | 500 kg | Including the weight of the people and the motor |
| Recommended capacity | 15-40 hp. | Optimal range |
| Hull mass | ~130 - 150 kg | No equipment. |
When choosing an engine, you should consider not only power, but also weight. An engine too heavy at the stern can disrupt the differentiation, and the boat will peck with the nose. Light two-stroke engines or modern four-stroke medium-power will be the best choice.
βοΈ Check before buying the engine for the LR 520
Don't forget. fuel-efficiencyFor LR 520 with an engine of 20-30 hp fuel consumption at cruising speed will be about 8-12 liters per hour, which is an acceptable indicator for outdoor activities.
Maintenance and durability of aluminum alloy
Aluminum boats are famous for their unpretentiousness, but this does not mean that The LP 520 does not require maintenance at all. The main enemy of aluminum is electrochemical corrosion, especially when used in salt water or in contact with heterogeneous metals. zinc protectorsIf they're installed.
After each unloading, it is advisable to rinse the boat with fresh water to wash away salt, silt and sand. Sand stuffed into corners can act as an abrasive when shaking on the trailer, gradually wiping the protective layer. Regular inspection of the bottom for scratches will help to localize damage in time.
β οΈ Warning: Never leave the LR 520 on shore in an inverted form in direct sunlight for a long time without ventilation, which can lead to deformation of thin sheets of metal and the formation of condensation inside.
If you find a chipped paint or a deep scratch, it should be painted with a special primer for aluminum. Ignoring small defects can lead to the growth of the corrosion site. It is also recommended to periodically lubricate the movable elements of the fastener and loop.
For storing a boat in winter, it is best to use a closed room or a special tent case, which tightly fits the hull, but does not fit close to the metal, ensuring air circulation.
Popular options for tuning and refinement
Owners The LR 520 often doesn't stop at factory-design. One of the most popular improvements is the installation. console It's not only a comfort booster, it also improves visibility, protecting the appliances from splashes and wind.
Another popular area is the organization of storage areas for gear, the insertion of additional knobs in the sides or under the banks allows you to keep everything you need at hand and frees up a useful area of the cockpit, the use of lightweight materials, such as composite or moisture-resistant plywood with coating, helps not to overload the boat.
- π Installation of electrical wiring for navigation lights and sonar.
- πͺ Replace hard cans with soft seats with backs.
- β Installation of an anchor roller and a lintel device in the nose.
- π‘οΈ Glogging of the bottom and sides with a protective film or anti-gravel coating.
An important element of tuning is also the installation of an anchor system, for a boat of this size, an anchor weighing 4-6 kg is enough. The presence of an anchor end with a buoy will allow you to quickly fix the boat on the current or wind.
Competent tuning LR 520 turns a utilitarian boat into a comfortable boat for family holidays, but requires careful calculation of the weight of all changes made.
Frequently Asked Questions About the LR 520
Can I use LP 520 to get out into open water?
Although the boat has a keeled bottom, it belongs to the class of small pleasure craft. Outing in open water (for example, Lake Ladoga or Onega in a storm) is strictly not recommended due to the Ω ΨΨ―ΩΨ― height of the board and the lack of a self-draining cockpit. Safe operation is possible in the coastal zone and inland water bodies.
What is the maximum weight of people can be carried on the LP 520?
data-sheet figures puts the load capacity at around 400-500 kg, which includes the weight of passengers, motor, fuel and equipment, and exceeding this limit reduces the buoyancy margin and makes the boat dangerous to operate, especially in choppy conditions.
Do I need to register HR 520 in GIMS?
Yes, boats longer than 20 meters or with an engine power of more than 8 kW (about 10.8 hp) are subject to mandatory registration with the GIMS. LR 520 Usually equipped with motors more powerful than 10 hp and has a length of 5.2 meters, registration and the availability of rights category "M" are mandatory.
What is the best way to paint an aluminum boat LR 520?
Epoxy soils and polyurethane enamels are best suited for painting aluminum. Conventional oil paints may not stay on the smooth surface of the alloy. Before painting, thorough cleaning and degreasing of the surface is required.