Modern fishing and recreation on the water are undergoing significant changes, shifting towards environmental friendliness and comfort. Electric outboard motor It's gone from being an exotic toy for enthusiasts to being a reliable tool for professionals and amateurs who appreciate silence and lack of vibration. Unlike noisy gasoline engines, electric motors allow you to sneak up on fish silently, maneuver in thickets and not worry about leaking fuel.
However, the market is oversaturated with offers and it is easy for a beginner to get confused about specifications such as thrust in pounds, battery voltage and a lower unit design. Wrong choice. It can lead to the purchase of a weak unit that can not cope with the wind, or, conversely, to overpay for excess power, which will quickly land the battery. In this article, we will discuss all the technical details so that you can make an informed decision.
The first thing the buyer has to do is choose between suspended and topping up It's important to understand that an electric motor is not measured in horsepower in the same way as an ICE; its main characteristic is traction, and it's the right ratio of the boat's weight, cargo and operating conditions that determines whether you enjoy cruising or fight the current.
Key specifications: traction, power and voltage
The main parameter to be guided by when choosing is traction Many people mistakenly believe that you can simply convert pounds to horsepower, but this is not quite correct from a physical point of view, since thrust characterizes static force, not the speed of the shaft. For a standard inflatable boat 3-4 meters long with one angler and equipment, a model with a thrust of 30-40 lbs is usually enough.
The second critical parameter is the working tension Most low-power engines run from 12 volts, which allows for a single standard car or traction battery. Higher-power units designed for heavy aluminum boats or boats can require 24 or even 36 volts, which implies a series of two or three batteries, respectively.
⚠️ Warning: Never try to connect a 12-volt motor to a 24-volt battery or dual-battery system, guaranteed to cause the windings to burn and the electronics to fail in seconds.
When choosing, you should also pay attention to the length. lower unit If you're planning to use the motor on a low-side inflatable boat, a standard short leg would do. For high-transe boats or high-load boats, when the stern is heavily submerged, you'll need an elongated version so that the propeller is always underwater and doesn't take in air.
Calculating the necessary traction for your boat
To avoid guessing with power, there is a proven calculation formula that takes into account the total weight of the equipment. The £50 rule According to the report, for every 500 pounds (approximately 227 kg) of the total weight of a boat, passengers and cargo, 1 pound of motor thrust is required in calm weather, but for fishing, where wind and current often need to overcome, this reserve must be increased.
Consider a specific example: If your boat weighs 100 kg, you weigh 90 kg, plus 30 kg of equipment and 20 kg of battery, the total weight is 240 kg. Translated into pounds (multiply by 2.2), we get roughly 528 pounds. The basic thrust is about 10-11 lbs, but for comfortable fishing with power reserve, it is better to take a motor with thrust 30-35 lbs. This will allow you to move confidently against the wind 3-4 m / s.
Below is a table that helps you navigate the choice of model depending on the type of vessel and conditions:
| Type of boat | Total weight (loaded) | Recommended traction (lbs) | Voltage (V) |
|---|---|---|---|
| Small inflatable (up to 3 m) | 250 kg | 30-35 lbs | 12V |
| Medium PVC (3-4 m) | 250-500 kg | 40-55 lbs | 12V |
| Large PVC/Aluminum | 500-800 kg | 60-80 lbs | 12V / 24V |
| Boat / Heavy Boat | more than 800 kg | 80+ lbs | 24V / 36V |
It is worth considering that the presence wind-wind and current If you often fish in large reservoirs where the wave walks, or on rivers with fast currents, take a motor with a power reserve of at least 30% of the calculated minimum, a weak motor will run at its limit, which will reduce battery life and battery life.
Types of control and design of screws
Modern electric motors offer various control systems, which are divided into mechanical (pen-tiller) and foot (pedal). Roompile control It's a classic and the most common, simple, reliable, and allows you to control the speed and direction by turning the handle itself, and it's the perfect choice for most anglers using PVC boats.
Foot Control is a separate pedal connected to the motor by cable or radio, which allows the angler to keep his hands free for spinning, which is especially true when fishing on track or trolling, but such models are usually more expensive, more difficult to set up and require more space in the cockpit to install the pedal.
- 🌀 Two-bladed screws They provide high speed, but create more vibrations and noise, suitable for rapid transitions.
- 🌀 Three-bladed screws The “gold standard” provides a balance between speed, thrust and smoothness of the course, minimizing vibrations.
- 🌀 Five-past screws. They are used on powerful motors for maximum efficiency and reduce cavitation, but may be more sensitive to grass.
⚠️ Warning: When installing the motor, make sure that the screw is immersed in water at least 15-20 cm. Work "dry" or with partial immersion will lead to cavitation, reduced efficiency and possible damage to the blades.
Also important is the design of the screw. detachable The good thing about removable blades is that when they hit a snag, they can fold or break off, keeping the engine shaft, but replacing them requires spare parts. Whole screws are stronger, but when they get stuck, they can transfer torque to the gearbox.
If you fish in grassy ponds, choose models with a two-blade screw and the ability to install a special protective casing that will prevent the algae from winding on the shaft.
Battery choice: traction vs. starter
The heart of any electric boat system is the battery, and the most common mistake that beginners make is trying to use a conventional car. starterThese batteries are designed to deliver huge currents for a short time (to start the engine), but do not tolerate long-term discharge with low currents. Deep discharge kills the starter battery in 10-20 cycles.
Special motors are required for outboard motors traction Deep Cycle: They are designed to give energy evenly over time and withstand deep discharge without losing capacity. The most popular technologies are GEL, AGM and Lithium-Iron-Phosphate (LiFePO4) batteries, which, despite their high initial cost, last 5-10 times longer than lead-acid counterparts and weigh half as much.
When calculating the battery capacity, use the formula: Capacity (Ah) = (Motor current × Operating time) / 0.8. 0.8 is introduced to keep the battery from draining to zero, as a deep discharge below 20% is harmful even for traction models. For example, the motor consumes 20 Amps at average speed. For 5 hours of travel, you will need: (20 × 5) / 0.8 = 125 Ah. The optimal battery is 140-150 Ah.
Comparison of battery types
Lead acid (GEL/AGM) is cheaper but heavier and fearful of overcharging. Lithium (LiFePO4) is lightweight, has a built-in BMS protection system, keeps the voltage to full discharge, but requires a special charger and costs more. For frequent use of lithium is more profitable in the long run.
Overview of popular brands and models
The electric motor market can be divided into three segments: premium, medium and low-cost. Minn KotaTheir series models. Endura They're considered the benchmark of reliability, they have excellent corrosion resistance and widespread availability of spare parts, but you have to pay a lot for the brand.
Chinese manufacturers, such as Haswing, Watersnake and FlapjackThe Chinese can often find the same components as the Americans, but without a marketing markup. The Haswing Osapian series is well-deservedly popular due to its quiet operation and the presence of built-in GPS in some versions.
- 🏆 Minn Kota Endura C2 30 - classics of the genre, an unkillable motor for small boats, time-tested.
- 🏆 Haswing Cayman 55 - a powerful motor with a telescopic tiller and electronic speed control, quiet and tractive.
- 🏆 Watersnake ASP T24 A budget option with a good power reserve, popular among beginner anglers.
When buying, pay attention to the availability of warranty and service centers in your region. Electric motor Cheap nounaime models from Aliexpress can be luring at the price, but the lack of spare parts (especially screws and control boards) can turn your boat into a stationary object after the first breakdown.
☑️ Check before buying the engine
Rules of operation and care of electric motor
For a motor to last, you have to follow a few simple but important rules of operation. overheating Although protected, long-term storage in water is not recommended, as the glands may lose their tightness over time. After each fishing, it is advisable to wash the engine with fresh water, especially if you are a fisherman.