Buying an inflatable vessel is often just the first step in an endless process of improvement. Many owners of budget models face an unpleasant reality: a regular transom does not allow you to install the powerful engine that is necessary for comfortable plane with full load, and it is at this point that there is an urgent need to find and buy a quality supercharge on the transom of the PVC boat, capable of withstand the increased loads.
The boating market offers many solutions, from homemade plywood structures to professional aluminum systems. However, the wrong choice can lead not only to money loss, but also to dangerous situations on the water when the engine is ripped off the mounts at full speed. In this article, we will discuss in detail what to look for when buying, what materials are really reliable and how to avoid making mistakes with the geometry of the installation.
Why do you need a slack on the slack and when to buy it
Substantive function superstition This is because the transom height increases, allowing for more powerful and heavier outboard motors. Standard PVC boats are often equipped with a 380-400 mm high transceiver, which is designed for engines up to 5-8 horsepower. If you plan to put the engine at 9.9 or 15 hp, the standard space is simply not enough for the correct placement of the lower unit.
Besides, translucent If the board is not thick enough or strong enough, if you put a powerful engine on a weak plywood, it can be destroyed by the weight of the engine and vibration, and if you buy a reinforced structure, you solve the reliability problem by spreading the load over a large area of the side and bottom.
There's also an ergonomic aspect, which is that when you install the plug, you change the tilt angle of the lower unit, so you can fine-tune the anticavitacine stove relative to the bottom, which is critical to getting to the plane and getting to the top speed.
⚠️ Attention: Using a transom superstitial increases the total length of the vessel and shifts the center of gravity. Be sure to check the load capacity of your boat before installing a heavy motor.
Design features and types of reinforcements
When choosing a device to buy, it is important to understand the difference between monolithic and prefabricated structures. Monolithic versions are a single plate that is attached to a standard transom. They are highly rigid, but require more space for storage and transportation in disassembled form.
Prefabricated models typically consist of a central part and lateral ears that span the cylinders, often adjustable in width, making them versatile for different boat models. plywood or aluminum-alloy It's corrosion-resistant.
- 🔹 Plywood models: cheaper, easier to handle, but require careful painting and protection from moisture.
- 🔹 Aluminum systems: They are more durable, do not rot, but have a higher cost and weight.
- 🔹 Combined options: combine a metal frame and plywood base for balance of price and strength.
Special attention should be paid to models with integrated flash-valve You buy a supercharger like this, you kill two birds with one stone: you increase power and you improve usability.
Choice Criteria: What to Look at Before Buying
The first thing to look out for when looking for a product in catalogs is compatibility with your boat model. Flagship, hunter or Cayman. The wrong width can cause the side mounts to press on the cylinders or, conversely, to dangle.
The second critical parameter is the thickness of the material. For motors up to 10 hp, plywood is 12-15 mm thick. If you plan to use a 15-18 hp engine, it must be at least 18-20 mm thick, or the structure must be reinforced with aluminum profiles. A weak supercharger will begin to vibrate, creating a resonance that quickly destroys both its own and the engine's lower unit.
It's also important to have quality fittings, cheap Chinese bolts and nuts rust quickly in salt water. stainless steel The threaded joints shall be protected against spontaneous unwinding by vibration.
⚠️ Note: When buying, pay attention to the quality of the processing of the crops. Uneven edges of plywood or burrs on aluminum can damage the cylinders of the boat with prolonged contact or pumping.
Comparative table of popular models
To facilitate the selection process, we have prepared a comparison of the specifications of typical market representatives, these parameters will help you to understand which supercharge on the transom of a pvc boat will be more profitable in your case.
| Model/Type | Materials | Max engine power (hp) | Weight (kg) | Features |
|---|---|---|---|---|
| Phaner Standard | Birch plywood 15mm | till 9. 9. | 3.5 | Budget, requires painting. |
| Alu Profi. | Aluminum AD31T | 15 | 5.2 | It doesn't rot, it's high stiffness. |
| Universal Plus. | Plywood + Aluminum | 18 | 4.8 | Adjustable width, under wheels |
| Heavy truck | Plywood 21mm + Steel | 25 | 8.0 | For heavy motors, reinforced |
As you can see from the table, the price difference is often due to material and safety margin. For seasonal fishing in calm water, plywood is also suitable, but for frequent trips and high speeds, it is better to invest in metal.
Installation and installation instructions
The process of installing the extra charger you buy requires precision and adherence to technology. Mistakes at this stage can cost you the engine or even safety on the water. Before starting work, make sure that the boat is pumped to working pressure and the surface of the transom is clean and dry.
☑️ Checklist for superstructure installation
First, you need to dismantle the regular motor and, if any, the transom wheels. Then apply the new design to the transom. Between the standard board and the supercharger, it is recommended to lay a layer of rubber or a special seal to eliminate friction "metal plywood" or "plywood plywood", which will inevitably lead to wear.
The fastening is done through the regular holes or with the help of additional clamps that come with the kit. The bolts should be tightened cross-cross, gradually increasing the force to avoid distortion. After installation, attach the motor and check its operation at idle speeds in a container of water (barrel), controlling the absence of vibrations.
Use a thread locker (anaerobic sealant) on all bolt joints, and the vibration from the motor can unwind even very tight nuts in one season.
If you are installing the supercharger for the first time, you may need to adjust the height of the suspension of the engine. Anticavitacine plate should be 10-20 mm below the bottom of the boat when entering the planing.
Care and maintenance of trans-trans systems
Even the most expensive supercharger requires maintenance. The main enemy is moisture that gets into the microcracks of varnish or paint. After each operation, especially in salt water, the structure must be washed with fresh water and thoroughly wiped.
Once a season, it is recommended to perform a revision of the fasteners, the bolts should be twisted, cleaned of oxides and lubricated with graphite or lithium lubrication, which will prevent the boiling of the metals, which is especially important for aluminum alloys, prone to electrochemical corrosion paired with steel.
Secrets of storing a boat with an overstaff
If you do not remove the supercharge for winter storage, be sure to treat the ends of the plywood with olive oil or special varnish. It is better to keep the boat in straightened form or with a weakened pressure in the cylinders to avoid deformation of the transom knot under the weight of the structure.
Carefully look at the contact points of the cylinders, the appearance of scuffs on PVC is a signal that the geometry is broken or the fastener is weakened, timely replacement of the protective linings will save the cylinders from depressurization.
Where to buy and how not to run into a marriage
It is better to purchase such a crucial element of equipment from proven manufacturers or from specialized stores with a good reputation. Markets and dubious sites often offer handicraft products that use conventional construction plywood instead of aviation or marine, and the thickness of the material can walk by several millimeters.
When ordering online, carefully examine the photos of the real product, not 3D models. Pay attention to the quality of the slices: they must be smooth, without chipping. If the seller does not specify the brand of plywood or the type of aluminum alloy, this is a reason to doubt the quality.
The optimal solution for most boats with a length of 320-360 cm is to buy a universal adjustable supercharge from a combination of aluminum and plywood 18 mm thick.The difference of 1000-1500 rubles between a quality product and a cheap analogue is incommensurable with the risk of losing a motor worth tens of thousands of rubles.
Properly selected and installed supercharge extends the life of the boat and allows you to safely use more powerful engines, saving fuel and time on the water.
Frequently Asked Questions (FAQ)
Will fuel consumption increase after the installation of the supercharger?
The addition itself does not increase fuel consumption; however, the more powerful motor that is made possible by the support can both increase consumption (when driving aggressively) and reduce it (if the engine is operating at the optimal speed range, rather than at the limit of capabilities, like a weak motor).
Can you make a supercharge on the transom yourself?
Technically, it's possible if you're skilled in wood or metal, but factory products pass strength tests and are guaranteed, and homemade construction can be too slow to withstand the dynamic loads of the wave, which is dangerous.
Will the boat speed affect the boat?
Directly, no, it just adds a few kilograms of weight to the stern, and indirectly, yes, because it allows you to install a higher-powered motor that will take the boat to plane faster and allow you to reach higher speeds.
Do I need to register changes in the GIMS?
The addition does not change the design specifications of the vessel so much as to require re-registration, unless you change the engine to a more powerful one, exceeding the restrictions for this category of rights or the boat itself.