PVC inflatable boats have long ceased to be just a means for quiet fishing on paddles. outboardIt turns a light boat into a full-fledged high-speed vessel, but in order for the engine to work efficiently and safely, you need a hard and reliable mounting point, which is provided by the transom board.
The transmunist holder is not just a piece of plywood with mounts, it is a complex unit, experiencing enormous stress from the rotor's stop and vibration of the engine running, and an error in choosing or installing this element can lead to the loss of the engine or, worse, damage to the cylinders and depressurization of the boat.
In this article, we will discuss in detail what types of fasteners exist, how to properly mount a transom plate on the inflatable side and what nuances to pay attention to when operating. A competent approach to this issue will prolong the life of your equipment and ensure safety on the water.
Design and purpose of the transom board
The main purpose of the transom is to transfer the propeller's traction force to the boat's hull, allowing for forward movement, because the PVC sides are soft and elastic, they cannot support the engine, so they use a rigid insert that distributes the load over a large area, preventing the material from rupturing.
Classical. transponder It's a multi-layered structure, and it's based on moisture-resistant plywood, often coated with special paint or plastic to protect against water, and it's around the perimeter or at certain points that the mounting elements to the cylinder are placed, and it's these elements that hold the entire structure upright under the weight of the engine.
The most important element is the angle of inclination. differentiator It allows the boat to go out and glid faster and save fuel, and if the transom is too much inward or outward, the boat will scour, burrow, or, conversely, sniff out, losing control.
⚠️ Warning: Never use conventional building plywood without additional waterproofing to make a transom. Water will quickly penetrate the pores of the tree, inflate it and lead to the destruction of the structure directly on the water.
Use marine plywood of the FSF or FC brand with oliph impregnation and several layers of yacht varnish for maximum durability of the homemade transom.
Types of transom-to-cylinder anchorages
The way the squirrel board is fixed to the inflatable board depends on the design of the boat itself and the estimated power of the engine, and manufacturers use various engineering solutions, each with its own advantages and limitations.
The most common option is to fasten with the help of sling They cover the balloon and are fixed on the squirrel board through special slots or braces, which is simple and versatile, but requires careful adjustment of tension so that the board does not "walk" when moving.
More advanced boat models are being equipped cock-carry In this case, the transom is inserted into pockets located on additional inflatable elements, which in turn are rigidly sewn to the main cylinder, which ensures perfect tightness and load distribution.
- 🔹 Sling anchorage: universally, suitable for most boats, requires periodic lifting of straps.
- 🔹 Inflatable pockets (Air-keeper): provide better tightness, eliminate friction of solid parts on the side, but more difficult to repair.
- 🔹 Hard brackets: used in RIB boats (RIB) or with a rigid bottom, provide maximum rigidity of the structure.
The choice of type of mounting is often dictated by the budget and class of the boat, for powerful engines prefer a system with inflatable holders or combined options, where the sling is complemented by rigid stops.
Manufacture materials and their properties
The durability of the transom holder depends on the quality of the materials, and the basis is a stove, but not all plywood is suitable for use in aggressive aquatic environments. It is important to understand the difference between stamps and coatings.
For the production of high-quality transoms used plywoodIt is highly moisture-resistant and does not delaminate during prolonged contact with water, and is often coated with plastic or fiberglass, which protects the tree from mechanical damage and ultraviolet.
Metal elements such as bolts, nuts and brackets must be made of AISI 304 or AISI 316 stainless steel. The conventional ferrous metal will rust in one season, and the rust, in turn, can stain clothing and destroy the structure of the tree around the fastener.
| Materials | Moisture resistance | Weight. | Recommended application |
|---|---|---|---|
| Phanera FC | Medium | Medium. | Boats for calm water, small engines |
| FSF phanera | High. | Medium. | Universal use, medium loads |
| Fiberglass | Very high. | Highly | Professional boats, high loads |
| aluminum | Absolute. | Low. | Removable transpanet plates, light boats |
⚠️ Note: When buying a boat, pay attention to the quality of the processing of the edges of the transom board. If the end of the plywood is not painted over and protected, water will begin to penetrate the layers after the first descent into the water.
Instructions for installing a transcoat board
The correct installation of the transom is a guarantee of safety. The installation process may vary depending on the model of the boat, but the general principles remain unchanged. The main rule is that all installation of rigid elements is carried out only on a partially or fully pumped boat.
First, you need to determine the correct position of the board, it needs to be placed strictly in the center of the diameter of the balloon, skewed left or right will lead to an uneven distribution of the weight of the engine and can cause the boat to roll even in statics, and once the engine is installed, this roll will only increase.
When using a strap mount, it is important to ensure that the straps do not twist, they should fit tightly around the cylinder, but not squeeze it excessively, excessive tension can lead to deformation of the cylinder, and weak tension can lead to displacement of the transom when jerking.
☑️ Verification of transone installation
If your boat is equipped with a system air-keeperMake sure the extra cans are inflated to the recommended pressure before inserting the board. Inserting the transom in soft, non-inflated pockets can damage the seams or the pocket material itself.
Maintenance and maintenance of anchorages
Regular maintenance of the transom holder avoids unpleasant surprises on the water, first of all, it concerns the condition of the wooden base, even the best plywood can eventually become saturated with moisture if the protective layer has been damaged.
After every fishing or walk, it is recommended to remove the trans board, wipe it with dry rags and let it dry unbuttoned. Keeping a boat with a set transom folded is a bad habit that is guaranteed to lead to mold and rot.
Metal fasteners also require attention. Periodically check the threaded joints for corrosion. If you notice rust, clean it and coat it with anti-corrosion lubricant. This is especially true for boats used in salt water.
How to restore the transom if it has stratified?
If the bundle is small, you can take out the angle, clean the surfaces, smear with epoxy glue and pull it back together again with a press, and if you get a lot of damage, you have to replace the plywood completely, carving a new one from the old one.
Frequent errors in selection and use
Beginners often make mistakes that can cost them expensive repairs or new equipment, and one of the most common is trying to install a motor that is more powerful than expected. graffitiThis causes the board to crumble and the anchorages to break.
Another mistake is ignoring the angle of inclination. Many people just insert the motor as they get it. However, adjusting the angle of inclination of the transom (or using an adjustable ramp) allows you to optimize the performance of the boat. The right angle reduces water resistance and fuel consumption.
Insurance is also often overlooked, and even if the transom seems to be reliable, the use of an additional safety rope for the motor will never be superfluous, and it will save the engine in the event of an unforeseen breakdown of the mounts.
- ❌ Installation of the motor above the recommended boat manufacturer.
- ❌ Ignoring the tension check of slings during movement.
- ❌ Storage of a wet transomach board inside a bag with a boat.
- ❌ Use of poor-quality bolts for fastening the lower unit motor.
⚠️ Warning: Never try to “strengthen” a standard transom with additional wooden bars, fastened, which disrupts the distribution of loads and can lead to failure in the weakest place – usually at the attachment to the cylinder.
Questions and Answers (FAQ)
Can I make a transom for a PVC boat myself?
Yes, it's possible if you have wood skills and access to quality materials, you'll need 18-25 mm thick marine plywood, epoxy resin, fiberglass and stainless fasteners, but factory products often undergo strength testing that's difficult to replicate at home.
How do you know if the sleeves need replacement?
The main signs are: the appearance of bloating on the surface (the layers of plywood have diverged), blackening of the wood, visible cracks in the lacquer coating through which the white layer of wood is visible, or deformation of geometry (the board is "velo"). If the motor bolts began to turn easier than usual, then the tree inside has collapsed.
What is the maximum weight of the motor that a standard transom can withstand?
Standard transs on boats 320-360 cm long are usually designed for motors up to 5-6 hp (about 25-30 kg). For more powerful engines (9.9 hp and above), reinforced trans plates with additional inflatable tubes-holders or rigid construction are required.
Do I need to remove the transom while storing the boat in winter?
Storing the boat assembled with a transom panel puts constant pressure on the cylinders at the anchorage points, which can lead to deformation, and it also prevents normal air circulation inside the boat, contributing to condensation.
The main conclusion: transom board is a critical safety element: do not skimp on the quality of materials and regularly check the condition of the mounts to ensure that your boat lasts long and reliably.