Operating an inflatable boat without auxiliary aids is often a challenge, especially if you have to move the boat on a rocky beach or viscous sand. Even a small PVC boat with attachments can weigh more than 40-50 kilograms, which makes manual transportation extremely inconvenient. door-wheel become one of the most popular accessories that save the owner’s time and effort.
A properly fitted kit allows one person to easily move the boat with the motor to and from the launch site without risking damaging the cylinders with sharp stones. However, the market is oversaturated with offers, and it is easy for a beginner to get confused about the types of mounts and materials. In this article, we will take a detailed look at all the nuances of the choice so that you can purchase reliable equipment.
First of all, there is no one-size-fits-all solution for all types of boats: the design of the transom, the power of the installed engine and the operating conditions dictate their requirements for accessories, and ignoring the technical specifications can lead to mount failure at the most inopportune time.
Analysis of transom design and attachment type
The first step in the selection process is to thoroughly inspect the back of your boat. transom board It can have different thicknesses and angles of inclination, which directly affects compatibility with certain wheel models. Most manufacturers offer solutions that are attached directly to the transom, bypassing the motor or mounting under it.
There are two basic design types: removable and stationary. Removable models are convenient because they do not increase the weight of the boat while driving and do not interfere with transport in the case. Stationary options are generally more reliable, but require careful installation so as not to disturb the hydrodynamics and create unnecessary resistance to water.
⚠️ Note: When choosing a model, make sure that the fasteners do not block access to the drain valve and do not touch the lower unit outboard motor.
Particular attention should be paid to the material of the brackets themselves. aluminium alloys with anode coating have excellent corrosion resistance, but may be less durable at kink compared to the stainless-steelSteel structures are heavier, but they guarantee durability under extreme loads.
Calculation of permissible load and load capacity
The critical parameter is the maximum load that the wheels can handle, and the calculation error is not acceptable, because exceeding the limit will lead to deformation of the axle or destruction of the mounting units. outboard, battery, fuel tank and additional equipment.
Usually manufacturers indicate the maximum permissible weight in the product passport. It is recommended to take a model with a safety margin of at least 20-30%. For example, if the total weight of your boat is 80 kg, then the wheels should be designed for a minimum of 100-110 kg.
Weight distribution is also important, because the center of gravity shifts to the transom when you install a heavy motor, so the main load falls on the back, and if you plan to move the boat on soft ground often, the safety margin should be even higher.
Weigh a boat with a full set of equipment on a large floor scale before buying wheels to know the exact load figure.
Wheel sizes and patency
The diameter and width of the rim are crucial to the cross-countryability of different surface types: small wheels 180-200 mm in diameter are only suitable for smooth concrete slips or a smooth sandy beach, on rocks or in grass, they will tow and get stuck.
For versatile use, including rough terrain, gravel and soft ground, models with diameters from 260 to 300 mm or more will be the best choice. A wide rubber tire with a tread provides better grip and cushioning, protecting the cylinders from bumps.
The material of the wheel also matters. Camera inflatable wheels provide excellent cushioning, but are prone to puncture.PU wheels) are not afraid of sharp objects, but transmit vibrations more rigidly to the transom.
| Type of surface type | Recommended diameter | Type of tire | Features |
|---|---|---|---|
| Concrete, asphalt | 180-200 mm | Anyone. | Important is the stiffness and absence of beating |
| Sand, soil | 260-300 mm | Inflatable | You need low pressure to get through. |
| Rocks, shells. | 280-350 mm | Solid (PU) | Protection against punctures and high strength |
| Grass, dirt. | 300 mm | With an aggressive tread. | Self-cleaning tread is mandatory |
Folding and adjustment mechanism
The ease of use depends on the mechanism of transformation, and most current models allow the wheels to be folded into the "for movement" position, pressing them against the sides of the boat, which eliminates water resistance and prevents damage to the wheels against the wave.
There are fixation systems with pins, screw clips or quick-release connections. Screw clips hold the structure more reliably, but take longer to prepare. Quick connectors are convenient, but they can over time backlight due to wear and tear of plastic elements.
⚠️ Attention: Regularly check the reliability of the locking elements. Vibration when moving on the plane can weaken the fastener.
Some advanced models have a mechanism for adjusting the height or angle of inclination, which allows you to adapt the position of the wheels to a specific transom angle or engine height, and the presence of such adjustments makes life much easier for owners of boats of non-standard design.
Why is the angle of wheels important?
If the wheels are set at the wrong angle, they can rub against the cylinders constantly when moving, or, conversely, protrude too much beyond the dimensions of the boat, clinging to obstacles.
Manufacture materials and corrosion protection
The aqueous environment, especially salty seawater, is extremely metal-aggressive, so the quality of corrosion treatment is one of the main criteria for choosing, and cheap models are often coated with ordinary paint, which quickly disintegrates, opening the way for rust.
The best choice is considered to be products from stainless steel AISI 304 Or aluminium with high-quality anodizing, which can withstand long-term contact with water without losing properties, and also pay attention to plastic and rubber cells, which must be resistant to ultraviolet light.
The fittings (bolts, nuts, washers) must also be made of corrosion-resistant materials. Using conventional ferrous metal for fasteners will negate all the advantages of an expensive frame, as rust from the bolts will go to the transom.
Investing in stainless steel wheels will pay off with a long service life, while cheap counterparts will have to be changed every 1-2 seasons of active operation.
Installation and installation instructions
The process of installing transom wheels requires accuracy and adherence to technology. Incorrect installation can damage the transmutation board or lead to the loss of wheels during movement.
Usually, installation takes no more than 15-20 minutes and does not require special tools, except for a wrench or screwdriver. It is important to set the distance between the brackets correctly so that they do not interfere with the operation of the engine and ensure a uniform distribution of load.
☑️ Checklist before installation
Once installed, make sure to do a test on land, rock the boat to simulate the load, check for no backlashes and skews, and only when you make sure the mount is secure, you can head to the water.
Care and maintenance during operation
To keep the squirrel wheels in service, you need to take proper care of them, and after every step out, especially at sea, it is recommended to wash the structure with fresh water, which will wash away salt and sand, which can cause corrosion or jam the moving parts.
Periodically lubricate the hinges and axles with a special silicone lubricant that is not afraid of water and does not wash off, this will ensure smooth operation of the folding mechanism and protect the metal from oxidation.
If you use inflatable wheels, watch the pressure in the chambers. Failed wheels wear out faster and cushion less, and pumped wheels can burst when hitting a stone. Optimal pressure is usually indicated on the sidewall of the tire.
How to store transom wheels in winter?
For winter storage, it is better to dismantle the wheels, thoroughly wash and dry them. Store them in a dry room at plus temperature, in a straightened or folded form, but without load.
Can you make the wheels yourself?
Theoretically, you can use garden wheels and a profile pipe. But factory products pass strength and corrosion tests that are difficult to replicate in garage conditions. Home-made structures are often heavier and less reliable, so the risk is not always justified by savings.
Will the wheels be suitable for a boat with an electric motor?
Yes, for boats with electric motors, the wheel requirements are even lower, because the weight of the engine is much smaller than that of a gasoline equivalent, but the principle of attachment remains the same - to the transom, and all that matters is to make sure that the brackets do not interfere with the dip of the lower unit.
What to do if the wheels start to creak?
A screech usually indicates that the sand has been hit by hinges or the lubricant has been dryed, you need to take the knot apart, clean it of dirt, grease it abundantly and reassemble it, and if the creak is left, check the integrity of the bushings and axles.
Does the wheels affect the speed of the boat?
When the folded position is minimal, but the hydrodynamic drag still increases. At high speeds, this can be noticeable. Therefore, for speed modes, it is recommended to choose the most compact models or fully removable structures.