Buying a complete set of “motor boat with motor” is a solution that saves the beginner from many technical difficulties and compatibility errors. sink-board The boating market today offers thousands of options, from lightweight inflatable fishing models to heavy aluminum boats.
But even in the finished solution, there are nuances that determine comfort and safety on the water. lower unitThe wrong choice can lead to the fact that the boat will not go to the planing or, conversely, will be unmanageable at high speeds.
In this article, we will discuss all aspects of choosing a ready-made kit, you will learn how the specifications of the body and engine relate, what are the legal restrictions and what to look for when accepting equipment. motorboat He will be a reliable assistant for many years to come.
Criteria for the choice of the body and compatibility with the engine
The first thing we need to decide on is the material of the case. flyboat PVC (polyvinyl chloride) makes up the lion's share of the market because of its versatility; they are lightweight, compact in transportation and have excellent wave cushioning. For such models, a hard floor (plywood or aluminum paioles) is critical, which ensures stability when installing the motor.
Aluminum and composite housings belong to the class hard-hull They are more durable, but they require a trailer for transportation and storage space, and when choosing a body-motor bundle, the main parameter is the maximum power allowed, as indicated on the transom plate, which is prohibited by law and life-threatening.
It is also important to consider the design of the transom. Powerful motors require a reinforced transom plate, often with integrated transverses. clunker Or the ability to install a hydrodynamic suspension, a soft transponder on weak boats will not withstand the vibrations of a powerful two-stroke, which will lead to rapid destruction of the seams.
⚠️ Warning: Never install a motor with a thrust greater than 30% of the rated power specified by the boat manufacturer, which can cause the transom to break off and the boat to sink instantly at full speed.
Two-stroke or four-stroke: the eternal dispute of water engines
Choosing the type of engine is a compromise between weight, cost and environmental friendliness. Two-stroke engines (2Ts) are traditionally lighter than their four-stroke counterparts and have less sailing. They are easier to maintain in the field and often cheaper to buy. However, they require a fuel mixture (gasoline + oil) and produce more noise and exhaust gases.
Four-stroke engines (4Ts) are quieter, fuel efficient, and don't require mixing oil with gasoline. They tend to have higher lifespans and less vibrations. But those benefits come with increased weight and higher maintenance costs. For press fishing, silence is the best option, 4T is the best option.
Secrets of running a new engine
During the break-in (the first 10 hours) you can not develop full power. For 2T engines, it is critical to accurately observe the proportion of oil in the mixture, and for 4T - not to exceed the recommended speeds, so that the piston group is wiped correctly.
When buying a motorboat kit, you should think about the future. If you plan long journeys, a four-stroke will save you money on fuel, but if the boat is used for short trips to the nearest mould, where speed of planing and low weight are important, a two-stroke will be preferable.
- 🚤 2T Motors: Lighter, simpler construction, cheaper repair, need a mix of fuel.
- ⚓ 4T Motors: Quieter, more economical, more environmentally friendly, heavier and more expensive.
- 🔧 Maintenance: 2T requires frequent candle replacement and cleaning, 4T - regular oil change in the crankcase.
Power and lower unit: Technical Nuances
Motor power has a direct impact on speed and payload, but it's not just the amount of horsepower that matters, it's the length of the engine. lower unit The standard dimensions are S (short leg, 381 mm), L (long, 508 mm) and XL (572 mm). Setting a short leg on a high-transcent boat will lead to cavitation (air capture) and loss of traction, and the long leg will create excessive drag.
The formula for planing is about 1 hp per 20-25 kg of gross weight (boat + engine + people + cargo). If power is not enough, the boat will dig water, creating a high wave and wasting fuel, in which case it may be necessary to replace the propeller with the option with a smaller step.
When choosing a screw, focus on the tachometer: at full gas, the engine must give out the speeds specified in the specification (usually 5000-6000 rpm). The failure of revolutions threatens overheating, and overdoing - excess resource.
Control system also plays a role. Rumpered control is convenient on small boats, but at high speeds and at high wave is better to use. remote-control (gas/reverse cables) coupled to the steering wheel, which reduces driver fatigue and improves maneuvering accuracy.
⚠️ Warning: When installing the engine, make sure that the anti-cavitation plate is on the same level with the bottom line of the boat or lower by 1-2 cm. Incorrect installation in height will lead to loss of speed and overheating of the engine.
Legal aspects: registration in GIMS
According to current regulations, registration in the GIMS is subject to small vessels weighing more than 200 kg (including the weight of the engine) or with an engine capacity of more than 8 kW (about 10.88 hp). Thus, the bundle "boat + motor" up to 10 hp and a total weight of up to 200 kg does not require registration and rights of category "M".
If you're registered, you have to go through a technical inspection, get a boat's ticket, and get your side numbers, and you can get a lot of fines and you can put the boat in a parking lot if you don't follow these rules. transportable and the engine.
The registration procedure includes filing an application, providing title documents and paying a state fee. Owners of boats with engines up to 10 hp (inclusive) do not need rights, but everyone must know the rules of navigation.
Rule 10 hp and 200 kg: if at least one parameter is exceeded (power > 10.88 hp OR weight > 200 kg), registration is required.
Comparison of popular bundles: specifications table
To make the choice easier, consider a few typical factory kits available on the market, which are averaged for mid-range models.
| Type of kit | Materials | Engine power | Capacity (person) | Appointment |
|---|---|---|---|---|
| Budget tandem | PVC + plywood | 5 hp (2T) | 2 | Fishing, quiet move |
| Universal | PVC + aluminum | 9.8 hp (2T/4T) | 3 | cruising, fishing. |
| Speed. | PVC/Inflatable keel | 15-18bhp (2T) | 3-4 | planing, tourism |
| Boat team | aluminum | 20-30 hp (2T/4T) | 4-5 | Family holidays |
As you can see from the table, as the power and size increase, so does the functionality. However, for single-handed fishing, powerful motors are often overpowered, which will only increase fuel consumption and noise. The best choice is the “middle ground” that allows you to feel confident on the water.
Operation and maintenance of the kit
Your durability motorboat After each release, especially in salt water, the cooling system must be flushed with fresh water, using special connections or containers ("ears") worn on water intakes.
The boat and motor also have their own specifications: the motor should be stored in a vertical position to avoid oil entering the cylinders (for 2T) or leaking oil from the crankcase (for 4T).
☑️ Season preparation checklist
Regular replacement of consumables is the key to avoiding problems on the way. Water pump (impeller) requires replacement once a season or when you experience symptoms of overheating. Remember to check the tightening of the bolts of the motor attachment to the transom, because vibration has the property of weakening the connections.
⚠️ Warning: Do not leave the motor in the water for long periods of time without need (more than 2-3 days) and seashell slinging and corrosion can cause the cooling system to fail in one season.
Safety on the water: equipment and skills
The motor is a higher responsibility, the reaction rate on water is lower than on land. lifejacket Even if you're a great swimmer, a blow to the side or a screw when you fall overboard can be fatal.
Also, there should always be a line anchor, a scoop and a repair kit (for PVC), a spare candle and propeller veneer will be useful for the engine, and the ability to start the engine "from the hand" (starter cord) is a skill that can save the situation when the battery is discharged.
When planning your route, always consider the direction of wind and current. Going back against wind and wave on a low-power engine can be extremely difficult and dangerous. Always tell your loved ones about your route and approximate return time.
Do I need to insure the boat and motor?
small craft insurance is not legally required (unlike car insurance), but is highly recommended. Civil liability to third parties will cover damages if you accidentally crash into someone else's boat or dock. CASCO will protect your own kit from theft (theft) and damage.
Can I use a motor in the winter?
The engine is possible to operate in winter, but it requires preparation. The gasoline must be fresh, without alcohol additives that can freeze. After use, the motor must be thoroughly dried so that the residue of water in the pump does not freeze and split the pump body.
What to do if the motor stalls on water?
Don't panic. Check the fuel, the condition of the candles and the ignition system. If the engine doesn't start, use the paddles to maneuver to the shore. Always have an oar on board, even if you have a powerful engine, which is a safety requirement.
Choosing and using the motorboat-motor bundle is a fascinating process that opens up new horizons. A competent approach to choosing equipment, following the rules of operation and the laws of GIMS will make your time on the water safe and memorable. Remember that water does not forgive mistakes, but generously rewards for preparing and respecting the elements.