The transom wheels turn a PVC boat from a bulky cargo into a manoeuvrable vehicle -- you just flip the boat over and roll it towards the water like a trolley. NDMA (low pressure, non-rigid bottom) wheel installation requires a special approach: improper installation can lead to transmessationIn this article, we will discuss how to choose the wheels, prepare the boat and fix the structure so that it can withstand the weight of the vessel with the engine without deforming the PVC.
We have analyzed the experience of boat owners. NDMA stamps Bark, Wings, Flagship and other popular brands, and also took into account the recommendations of accessories manufacturers - from budget Waterlux premium Honda MarineIn the guide you will find not only step-by-step instructions, but also unique data on loads on transom at different types of fasteningwhich are not published in standard manuals.
Why do topping up wheels are necessary for NDND boats
Low-pressure inflatable floor boats (NDMA) weigh between 20 and 60 kg, but their main problem is not weight, but rigidityWithout wheels, carrying a vessel 50 meters away becomes a challenge: cylinders rub against the ground, the transom is bent, and the seams are under increased load.
- 🛡️ PVC protection: prevents the abrasion of cylinders on asphalt, sand or gravel.
- 🏋️ Load distribution: the weight of the boat with the engine (up to 100+ kg) is evenly transferred to the frame of the wheels, not to the transom.
- 🚗 Transportation: allow the boat to be transported on the roof of the car without risk of damage (wheels cushion impacts).
- ⚡ Saving timeDescent into the water takes 1-2 minutes instead of 10-15 minutes of manual carrying.
However, NDMA critically select wheels from height-adjustable If they are too low, the boat will sit on the transom, if high, you will lose stability when driving. 20-25 cm from the bottom of the transom.
Which wheels are suitable for NDND boats: comparison of types
There are three main types of transom wheels on the market, but not all of them are compatible with the standard. NDMAConsider the pros and cons of each option in the context of inflatable floor boats:
| Type of wheel | Benefits for BNDT | Cons for BNDT | Recommended models |
|---|---|---|---|
| Clips (clips) | Quick installation without drilling, suitable for temporary use. | Low load capacity (up to 30 kg), can jump when loaded. | Waterlux WL-TW01, Bravo BT-03 |
| Fixed (bolts) | It can withstand up to 100+ kg, reliable fixation. | Requires drilling of the transom, the risk of damage to PVC in case of installation errors. | Honda Marine H-TW20, Yamaha TW-50 |
| Foldable (telescopic) | Adjustable height, you can adjust to the deflection of the NDNDM. | Complex construction, expensive repairs when broken. | SeaStar SS-TW3, Bark TW-Pro |
For boats. NDMA The best choice. stationary wheels with aluminum frame They spread the load evenly and do not deform the transom. Avoid plastic models, they crack at a weight of over 50 kg.
⚠️ Attention.: Wheels with a diameter less than 20 cm not suitable for boats NDMA They will fall into the sand or gravel, increasing the load on the transom.
Required tools and materials
To install transom wheels on the boat NDMA You'll need to:
- 🔧 drill with a set of drills (diameter for the fastener wheels, usually
4-6 mm). - 📏 Line or bar for marking holes.
- 🧲 Magnetic holder (To avoid losing the bolts when working with PVC).
- 🧴 Sealer for PVC (for example, Bostik 2600 or Polyurethane glue "Moment").
- 🔩 Fixing kit (usually comes with wheels, but it is better to buy stainless bolts)
M5–M6). - 🧽 Degreaser (acetone or alcohol) for the treatment of drilling sites.
If you are installing wheels on a boat with aluminum-transom (for example, Bark 320NDNDND) additionally required sweep for openings and corrosion-free for bolts.
Clean the transom from dirt and sand |
Check the integrity of PVC (whether there are cracks or punctures) |
Mark the holes with a marker |
Duplicate the markings on the inside of the transom |
Put a slab under the slab for hardness during drilling--
Step-by-step installation instructions
The process of installing transceiver wheels on the boat NDMA It consists of 5 steps. Follow the instructions strictly in order to avoid errors:
1. Trans marking
Turn the boat upside down. Step back from the edges of the transom. 5-7 cm (for uniform load distribution) and mark the centers of future holes. For wheels with two fastening points, the distance between the holes should be 10–12 cm.
Critically important: check the markings on the inside of the transom! The holes must match, otherwise the bolts won't go straight.
2. Drilling
Use the drill on 0.5 mm smaller than the bolt diameterFor example, for a bolt. M5 take the drill 4.5 mmDrill at low revs to avoid melting PVC. Under the transom, place a board or plywood for rigidity.
⚠️ Attention.If the boat has a transom pocket (e.g. models) Flagship of NDNDM), drill only the outer layer of PVC so as not to damage the leakage.
Installation of the fastener
Put the bolts through the holes, put the washers on, and lock the nuts. cross-overYou should put it between the nut and the PVC. rubber-layer (Combined with wheels)
For boats with aluminum-transom use lock-nut or counternuts - they prevent self-unwinding when vibrating.
4. Sealing
Apply PVC sealant to the junctions of the bolts with the transom. Pay special attention to the inside, which is where moisture often accumulates. fluid-ribbon (for example, Liquid Tape).
5. Verification
Turn the boat over and put it on wheels.
- Is the stainless stainless stainless?
- Does the design withstand the weight of the boat + engine (put on the transom load)
30-40 kg). - I don't know if there's any backlashes.
If the wheels after installation "walk" on the sides, put under the mount additional rubber pads or use bolts with a cone head - they better fix the design.
Common Mistakes and How to Avoid Them
Even experienced boat owners NDMA They make mistakes when you install transom wheels, and here are the most critical ones:
- Drilling without substrate: PVC flexes when pressed, and the drill can pierce the balloon. Always use a hard base!
- Use of self-tappingThey tear PVC when they're loaded. Just nut bolts!
- Lack of sealing: Water penetrates through the holes, which leads to corrosion of the bolts and rupture of the seams.
- Wrong wheel heightIf the wheels are too low, the transom sags; if high, the boat capsizes when moving.
Another typical problem is hole-out When marking up. To avoid this, use pattern cardboard: Apply it to the transom, mark the centers of the holes, and then transfer the marking to PVC.
What to do if the wheel falls off during transportation?
If the wheel breaks off on the road, stop immediately and check:
1. the integrity of the transom (whether there are cracks around the holes).
2. condition of the bolts (possibly bent or cut).
3. tightness of cylinders (listen to hissing).
Temporary repairs: wrap the transom at the mounting site with a tape and lock the wheel with plastic screeds. But that's just for the drive home -- then you need a complete reinstallation!
How to care for transom wheels on a boat NDND
To make the wheels last longer, follow the following simple rules:
- 🧼 After each descent into the water Wash the wheels with fresh water – salt and sand destroy rubber and metal.
- 🛢️ Once a season Use the wheel bearings (use them). lithium-lubrication).
- 🔧 Before winter storage Remove the wheels, clean the fasteners from rust and store in a dry place.
- 🔍 Before every exit Check the pressure in the tires of the wheels (if they are pneumatic).
For boats. NDMA It is especially important to watch PVC tensionOver time, the material may stretch and the bolts will start to fall back, in which case, tighten the nuts or add additional washers.
Wheels off pneumatic They absorb shock better than cast shocks, but they require regular pumping. 0.5-0.7 atm (check with a gauge).
Review of the best models of trans wheels for NDND
Based on feedback from boat owners NDMA We have compiled a rating of wheels that have shown themselves to be the most reliable:
| Model | Growing capacity | Type of attachment | Price (2026) | Features |
|---|---|---|---|---|
| Honda Marine H-TW20 | 120 kg | Bolt-bolt | ~4,500 rubles. | Aluminum frame, adjustable height, suitable for motors up to 15 hp. |
| SeaStar SS-TW3 | 80 kg | Telescopic | ~6,200 rubles. | The folding structure, pneumatic tires, is ideal for sand. |
| Bark TW-Pro | 100 kg | Bolt-bolt | ~3,800 rubles. | Reinforced steel bolts, complete with sealant. |
| Waterlux WL-TW02 | 50 kg | Clips | ~2,100 rubles. | A budget option for boats without a motor. |
For boats. NDMA motorized over 10 hp We recommend models with framed (for example, Honda Marine or Bark TW-ProThey withstand dynamic loads when driving on uneven surfaces.
FAQ: Frequent questions about installing transax wheels on NDNDT
Can I install wheels on a boat NDND without drilling?
Yeah, but only. clip-model (for example, Waterlux WL-TW01They are attached by pressure on the transom, but they can withstand no more weight. 30 kgFor boats with an engine, this option is not suitable - the wheels will break on the first transport.
What is the best wheel diameter for sand?
For sand or loose soil, choose wheels with diameter 25-30 cm wide-tyre (e.g., SeaStar SS-TW3They don't fail and they roll easily.20 cm) will be "sinking" in the sand.
Do I need to take off the wheels for the winter?
In winter, the rubber elements of the wheels lose elasticity, and the metal parts can corrode. Keep the wheels in a dry place, having previously cleaned the fasteners of salt and dirt.
Can I use the wheels from the garden cart?
Technically, yes, but it is. dangerouslyThe wheels for the trolleys are not designed for dynamic loads and can break when driving on uneven surfaces, and their mounting is not adapted for PVC.
How to check if the transom is damaged after installing the wheels?
Inflate the boat to the working pressure and apply the soap solution to the attachment sites. If bubbles appear, there is an air leak. Also, check the transom at the lumen: deformations or folds indicate improper load distribution.