Proper installation of the sounder sensor on turret Inflatable boats are critical for any angler who wants to get reliable information about the topography and availability of fish. Installation errors often result in interference, loss of signal at high speed, or even physical loss of expensive equipment during a storm or abrupt maneuver. PVC require a special approach to the choice of mounting point and fixation methods due to the softness of the side and design features.
In this article, we will discuss in detail all the nuances of the process, from choosing the optimal location to the final calibration of the device, you will learn how to avoid common mistakes that beginners make, and how to ensure stable operation. sonar A competent approach to installation will allow you to forget about the problems with the signal and completely focus on fishing.
Selection of a place for installation on the transom
The first and most important step is to determine the ideal point for installation. transducerThe transom of an inflatable boat is often limited in space, and the surface is not always perfectly flat due to inflatable tubes and slings, and you need to find a site where the sensor will be submerged in water even with minimal loading of the boat, but it does not create excessive resistance.
It is critical to consider the direction of the water flow as it moves, and the sensor must be set up so that the flow flows around its working surface without forming air bubbles. Cavitation The sonar's main enemy, it completely blocks the signal, and if you plan to go above 10-12 km/h, the requirements for cleanliness become even more stringent.
- 📍 Choose a location closer to the diametric plane (center) of the transom to minimize the impact of the boat roll on the angle of operation of the sensor.
- 💧 Make sure that there are no protruding elements, joints or valves at the selected point that can create turbulence.
- 🚫 Avoid areas where engine exhaust may fall or where water flow breaks off from transom irregularities.
⚠️ Warning: Never place the sensor directly above or too close to the propeller. Vibration of the running motor can be transmitted to the mount, causing false readings or damage to the crystal inside the body.
Required tools and materials
To make a good installation, you need to prepare a specific set of tools that will ensure a reliable and sealed connection. Using inappropriate materials, especially adhesives, can lead to destruction. PVC fabric Or unplug the sensor at the most inopportune time, and the quality of surface preparation directly affects the longevity of the installation.
Pay special attention to the choice of sealant, it must be compatible with polyvinyl chloride and maintain elasticity after drying, as the trunk of the boat is susceptible to deformation. Hard sealants will eventually crack with vibration and temperature changes, disrupting the water. tightness.
- 🔧 A set of tools: drill, drill on metal and wood, screwdrivers, scissors.
- 🧴 Chemistry: degreasing agent (acetone or special PVC cleaner), two-component polyurethane glue or specialized sealant.
- 🔩 Fastening: stainless screws or bolts, washers, nuts, it is possible to use an intermediate bar of textolite or plastic.
Use only degreases recommended by your boat's manufacturer, and aggressive solvents can damage the protective layer of tissue, making it vulnerable to ultraviolet light and mechanical damage.
Surface preparation and marking
Preparation of the transom surface is the stage where most often errors are made, leading to the unfeeling of equipment. PVC fabric often has a texture or protective spray that must be removed or treated to ensure adhesion. The surface must be completely clean, dry and warm.
The markings should be done with the utmost precision, taking into account the angle of inclination of the sensor. Ideally, the work surface should be parallel to the bottom when the boat is moving. If the sensor is installed with a skew, the signal will be reflected not down, but sideways, which will give the readings. sonar useless.
- Carefully rinse the installation site with water with soap solution and dry completely.
- Treat the installation area with a degreaser using a lilac-free napkin.
- Attach the sensor template or the housing itself (if it allows) and mark the mounting points with a marker.
- If you plan to glue installation, hide the installation site with fine sandpaper for better coupling, but do not damage the reinforcing layer.
⚠️ Note: Do not glue or seal at temperatures below +15 C or high humidity, which will critically reduce the strength of the connection and may cause the sensor to detach after a short time.
Fixing methods: glue or mechanical installation
There are two main ways to fix the sensor on a PVC boat: gluing directly to the transom or using a mechanical fastener with an intermediate bar. Each method has its advantages and disadvantages, the choice depends on the design of your boat and personal preferences. The mechanical method is considered more reliable for active drivers.
The adhesive method uses a special elastic adhesive that creates a monolithic connection to the fabric, which eliminates the risk of leakage, since the integrity of the transom is not disturbed. However, if you need to replace the sensor or repair it, it will be extremely difficult to dismantle it without damaging it. material boats.
| Parameter | Glue montage | Mechanical installation (plank) |
|---|---|---|
| Reliability | High (with proper glue) | Very high. |
| Risk of leakage | Missing. | Minimum (requires sealant) |
| Difficulty in dismantling | High. | Low. |
| Impact on the guarantee | Could cancel. | Safe (if not drilled) |
Secrets of working with polyurethane glue
To achieve maximum strength when using two-component adhesives, it is important to observe the proportions of mixing components with an accuracy of up to a gram. The lack of a hardener will cause the adhesive to remain sticky forever, and the excess will make the connection brittle. Also remember that many polyurethane adhesives are sensitive to moisture - it acts as a catalyst for the reaction, so in dry weather the surface is sometimes slightly moisturized.
Step-by-step installation instructions
The installation process requires consistency and precision. If you've chosen the mechanical way with the bar, first fix the bar on the transom using a sealant under the screw hats. Then the sensor is mounted on this bar, which allows you to change the angle of inclination and easily remove the storage equipment.
In adhesive installation, apply the glue to the fat-free surface of the transom and the sensor back, let the glue dry to the "stick" state (if required by the instructions), then press the parts hard and fix the load during polymerization. It is important to squeeze all air bubbles out of the glue.
☑️ Checklist of sensor installation
Once physically attached, you need to get the cable right, and it doesn't have to be hung with loops that you can hook when you get into the boat, but it doesn't have to be pulled like a string. The optimal supply of cable at the entrance to the boat should be 10-15 cm.so that during deformation of the transom there is no breakage of the living or damage to the connector.
Echo sounder setting and calibration
Once the sensor is in the water, you need to make the initial adjustment of the head unit. Often the factory settings are not optimal for a particular reservoir or type of bottom. The first step is to start automatic calibration, if this is provided by the model of your model. sonar.
Notice sensitivity. Too high sensitivity will cause noise and false targets to appear on the screen, and too low will prevent you from seeing small fish or terrain details. Adjust this setting by watching the bottom display: it should be clear, but not smeared.
- 🎚️ Set up a depth range (Zoom) to study the bottom layer in detail.
- 🌡️ Check the correctness of the temperature sensor if it is built into the transducer.
- 🐟 Adjust the fish symbols to cut off minor interference and see only the target fish.
⚠️ Warning: Do not start at full speed on the water for the first time, start at a low speed, gradually increasing your speed, and watch the screen for interference or loss of signal, which will indicate cavitation.
Properly installed and tuned sensor shows a clear arc from the fish and a continuous line of the bottom even at a speed of 15-20 km / h. If the bottom line is interrupted - look for the cause in the vortices of water or angle of inclination.
Frequent errors and their consequences
One of the most common mistakes is to place the sensor too high relative to the water level, and as a result, when the boat rolls or gets excited, the sensor gets in the air and the signal goes missing, and the need to clean the working surface of algae and fouling during operation is often ignored.
Another mistake is using the wrong cable or laying it incorrectly, and the sonar cable is sensitive to electromagnetic input from the motor and the wiring, and if you put it in the same harness as the power wires, you'll see these characteristic horizontal jamming bands that make fishing impossible.
And seasonal storage is also a good thing, because leaving the sensor on the boat unprotected for the winter is putting it at risk of damage by ice or ultraviolet light, and the removable mounting benefits by allowing you to remove the equipment in a warm room while keeping it in place. resource and the accuracy of measurements for many years to come.
Can I glue the sensor to a regular silicone sealant?
The use of conventional plumbing silicone is not recommended for permanent attachment; it does not have sufficient adhesion to PVC under load and will detach over time. Reliable installation requires specialized polyurethane adhesives or two-component compounds designed for boat materials.
How often should I check the sensor attachment?
It is recommended to conduct a visual inspection before each outing, check for chips, cracks and fixation reliability. Once a season, especially after winter storage, it is advisable to check the condition of the glue seam or tightening of the bolts, as vibration and temperature changes can weaken the connection.
Why does the sonar show "porridge" at speed?
The porridge effect or loss of signal at speed is most often caused by cavitation, which is the formation of air bubbles around the sensor, this is due to the wrong angle of installation, the presence of obstacles in front of the sensor, or too high speed for a given model of transducer, the solution is to move the sensor to a cleaner stream or change the angle of inclination.