Electric traction is fundamentally changing the way we fish and day on the water, making it quiet and environmentally friendly. electric-motor Inflatable watercraft design requires strict adherence to installation technology, improper installation can lead not only to the breakdown of expensive equipment, but also to damage to the cylinders of the boat, which is unacceptable in operating conditions on water.
Unlike rigid housings, PVC materials have a certain flexibility and sensitivity to mechanical stress. technicalityYou have to choose the right transom board, ensure reliable fixation without distortion and organize the safe storage of the battery.
In this article, we will take a look at all the stages of preparation and installation, with a focus on weight distribution and protecting electrical connections from moisture. Understanding the physics of the process will help avoid the typical novice mistakes, such as shifting the center of gravity or pulling attachment screws. Ready to work begins long before you touch the water.
Selection and preparation of the transcoat board
The foundation of the entire system is cross-boardStandard plywood inserts that come with a boat are often not designed for the weight of the electric motor and battery, so their replacement with a reinforced version is mandatory. The optimal material is moisture-resistant plywood at least 12-15 mm thick, treated with protective compounds.
When choosing or manufacturing a transom, it is critical to consider the geometry of your boat. The board must have a cutout under the keel or the appropriate shape to fit tightly to the cylinders throughout the contact area. If there is a gap between the board and PVC, the pressure from the running motor will focus on a narrow strip, which will inevitably lead to a narrow lane. strain Or wiping the material.
⚠️ Warning: Never use raw plywood or chipboard as they will quickly gain moisture, swell and lose strength, which can cause the motor to fall into water.
To securely fix the board to the cylinders, special belts with fastex buckles or slings are used. It is important that the fastening elements do not have sharp edges that can damage the fabric of the boat when rolling. Some boat models are equipped with built-in transom pockets, which makes it easier to do, but requires strict compliance with the size of the board.
How to check the quality of plywood for transom?
Take a piece of plywood and try to bend it with your hands, and if it bends too easily or you hear the crack of fibers, it won't withstand the vibrations of the motor, and check the ends, they should be tightly glued together without voids.
Selection of installation location and weight distribution
The right location of the motor and battery directly affects the driving performance and safety of navigation. battery They put a lot of pressure on the stern, and the center of gravity has to be shifted so that the bow of the boat is not blown up by the wind, and the stern does not go under water.
There are two main ways to place equipment: on the transom and inside the cockpit. Installing the motor on the transom is classic, but requires that the weight of the battery be offset by shifting the passengers forward. If you plan to fish alone, you may need to transfer the battery to the bow of the boat using a cables extension for the motor.
When the engine is installed internally (through a transom hole or on a special mast), it is possible to reduce sailing and improve balancing. However, this option requires more complex preparation and sealing of the shafts. transom-holding with proper distribution of cargo inside the boat.
Technology of fastening of the motor to the transom
The process of mounting the engine itself requires precision and the use of the right tool. Most electric motors are equipped with soft-plated rods that should tightly cover the transom board. Before puffing, make sure that there is no sand or dirt between the strub and the tree that can play the role of abrasive.
Tighten the screws evenly, alternating sides to avoid skewing the engine. Excessive force can push through the tree or deform the plastic mounting elements, and insufficient force will lead to vibration and sliding of the machine while driving. The motor must sit "dead", without backlashes in the horizontal plane.
- 🔧 Check the presence of rubber gaskets on the rods - they protect the paint coating of the motor and the transom tree.
- 🔧 Make sure the handle of the crank is free and does not touch the elements of the boat when turning 360 degrees.
- 🔧 Lock the safety rope (if provided by the design) for a durable element of the boat, not for a soft cylinder.
Pay special attention to the angle of the tilt of lower unit. differentiator It's the best possible way to get the screw to work, and it prevents cavitation. If the screw gets too close to the surface, the air will swirl, and the thrust will fall; if it's too deep, the water resistance will increase.
⚠️ Warning: Do not allow metal parts of the fastener to contact PVC tissue. Even minimal vibration can cause the balloon to quickly abrade at the point of touch.
☑️ Checking engine anchorages
Food and electrical wiring
The electrical part is the most vulnerable to water, so the quality of the connections is given priority. To connect the motor, special cables are used in a cross section corresponding to the current consumed (usually from 10 mm2 and above), the use of thin wires will lead to their heating and a drop in voltage on the motor.
All contacts should be reliably protected from moisture and splashes. It is recommended to use heat-inflatable adhesive cambricks or special sea connectors. Simple insulation in high humidity and salt water quickly loses its properties and unstick, which can lead to short-circuit.
A safety lock or circuit breaker must be built into the power supply chain, designed to run just above the maximum power consumption of the motor, and this device will protect the wiring from fire in the event of a screw jamming or accidental short circuit, and the fuse should be easily accessible for rapid replacement directly on the water.
| Parameter | Recommended value | Critical level |
|---|---|---|
| Cable cross-section | 10-16 mm2 | Less than 6 mm2 |
| Nominal of safety | 40-60 A | No safety lock. |
| Length of wires | Minimum necessary | More than 3 meters. |
| Type of contact | Rained copper | aluminum |
To store the battery, use a special sealed box that will not only protect the battery from water, but also prevent the release of gases (if the battery is serviceable) inside the boat, and also protect the boat itself from acid in the event of a rollover.
Use a spray dielectric to treat all connectors before each release to the water – this will create a water-repellent film and prevent the contacts from oxidizing.
Corrosion protection and maintenance
The aqueous environment, especially the salty environment, is aggressively affecting the metal parts of the electric motor. Even models with the declared corrosion protection require additional attention of the owner. The main enemy here is galvanic corrosion, which occurs when heterogeneous metals come into contact in the electrolyte.
Regular maintenance involves washing all nodes with fresh water after each release to salt water. Pay special attention to the daydwin, screw and attachment sites. Periodically, you need to lubricate mobile connections with special compounds that are resistant to leaching.
- ⚓ Examine the screw for the presence of wound algae or fishing line that can damage the glands.
- ⚓ Check the condition of the anodic protection (zinc plates) and change them when destroyed by more than 50%.
- ⚓ Lubricate the motor shaft with silicone lubrication to prevent boiling threaded joints.
Storing the motor during the off-season also requires preparation, the device must be completely cleaned, dried and placed vertically in a dry room, and it is not recommended to store an electric motor with a lower unit lowered into the working position, as this puts a strain on the tilt mechanisms.
⚠️ Warning: Never leave the motor submerged in water for long periods of time unattended, and shell overgrown and corrosion can begin within days of parking.
Regular washing with fresh water and lubrication of moving parts increase the life of the electric motor by 2-3 times, especially when operating in salt water.
Testing and first launch
Before going to the big water, be sure to conduct a test run in safe conditions, for example, near the shore or in a shallow body of water, this will make sure that the assembly is correct, there are no leaks in the electrical part and the control system works correctly.
When you first turn on, check the smoothness of the speed regulator. The motor must respond to the rotation of the handle without jerking or delay. It is also worth checking the reverse operation - the switching should be clearly, without extraneous sounds and sparking contacts.
During the test, pay attention to the heating of the wires and connectors. If after 5-10 minutes of operation at medium power you feel a strong heating at some point in the circuit, then there is poor contact or insufficient cross-section of the conductor, the operation of such a system is prohibited.
What to do if the engine is humming but not spinning?
Most likely, the screw (foil, grass) is locked or the battery is dead. Immediately turn off the power, lift the engine and release the screw. Re-energizing when the screw is locked can burn the controller.
Successful completion of tests gives the green light for full operation. Remember that the electric motor requires delicate handling: avoid sudden switching from full-forward to full-back, as this creates peak loads on the mechanics and electronics.
Frequently Asked Questions (FAQ)
Can an electric motor be used on a PVC boat against the current?
Yes, you can, but you have to consider the power of the motor and the current strength. To move confidently against moderate currents requires at least 30-40 lbs. It is also important to calculate the battery capacity correctly, since working under load consumes energy faster.
Do I need to remove the engine when transporting the boat?
Remove the engine and transport it separately in a case, which will protect the fastening mechanisms from vibration and impact, and prevent accidental damage to the boat cylinders by heavy metal parts of the engine.
How often should I charge the battery after fishing?
Lithium-iron-phosphate (LiFePO4) and AGM batteries are recommended to be charged immediately after use without leaving them in a discharged state. gel batteries are more tolerant to storage, but also require timely recharging to prevent sulfation.
Is the electric motor dangerous for fish and sonar?
Modern electric motors have shielding to minimize electromagnetic interference, but cheap models can create noise at soundtrack frequencies. For sonar fishing, choose engines labeled "Low Interference" or shielded cable.