Transportation of a PVC boat on an onboard trailer requires reliable fixation to avoid damage to the hull, loss of cargo on the track or emergency situations. Lodges It is a key element of the mounting system that distributes the load evenly and prevents friction between the boat and the metal parts of the trailer, but not all owners pay enough attention to their choice, focusing only on price or appearance.

In this article, we will discuss which PVC-boat-piece They are suitable for the on-board trailer, how to choose them correctly in size and material, and also give step-by-step installation instructions taking into account the specifications of different trailer models. critical errors during installation, which lead to deformation of the boat or breakage of fasteners at speeds above 60 km / h.

Why do you need a PVC boat on a trailer?

Onboard trailers, unlike boat trailers, don't have specialized guides for the hull. Without padding, the PVC boat will:

  • 🔹 slip with sharp braking or cornering, even if fixed by slings;
  • 🔹 Deform in places of contact with metal corners of the trailer (especially dangerous for thin PVC materials up to 0.9 mm thick);
  • 🔹 overheat in the sun, if the trailer is standing without movement - some plastic lodgings can melt;
  • 🔹 Make noise when the side is rubbed, which distracts the driver.

In addition to protecting the boat, high-quality lozenges simplify the loading / unloading process. roller-ins They allow the boat to be moved along the trailer to one person, and height-adjustable The options are suitable for trailers with different load capacity.

⚠️ Attention: If you transport a PVC boat on a trailer without pawns, the insurance company may refuse to pay in case of an accident, citing a violation of the rules for fastening the cargo (P. 23.3 traffic rules of the Russian Federation).

Types of Lodges: Which Material to Choose?

The material of the pawns determines their durability, weight and compatibility with the PVC surface.

Materials Pluses Cons Term of service
Polyurethane UV resistant, does not scratch PVC, lung Honey, it can crack in the cold below -20°C. 5-7 years
Polyethylene (PHD) Budget, does not rot, can withstand a load of up to 200 kg Slippery when wet, over time loses shape 3-5 years
Rubber (EPDM) Excellent grip, shock absorbs shocks, is not afraid of salt Heavy, can leave traces on light PVC 7-10 years
Polyurethane foam with a case Soft, suitable for boats with a thin bottom (0.5-0.7 mm) Soaks up water, requires drying after use 2–4 years

For most PVC boats, the optimal polyurethane or ergotThe latter are particularly good for seawater, because they don't break down from salt. polyethylene beds They are cheaper but require periodic checks of the mounts.

📊 What material do you use for the padding?
Polyurethane
Polyethylene
Rubber
polyurethane
Other

How do you get the size of the pads?

The wrong sized pads will either not hold the boat or damage its hull, and here are the key parameters for calculating:

  1. Boat length - determines the number of pawns:
    • 📏 Up to 3.5 m - 2-3 pairs are enough;
    • 📏 3.5-4.5 m - 4 pairs;
    • 📏 Over 4.5 m - 5-6 pairs (with a step of 60-80 cm).
  • Width of trailer - the pawns must protrude beyond the sides by at least 10 cm on each side.
  • Boat weight For models over 150 kg, lodgings with a metal core are needed.

    • Example: For a boat The winger 420. (length 4.2 m, weight 70 kg) suitable 4 pairs of polyurethane beds 50×10×5 cm with a mount on the bolts M8. Frigate 380. (weighing 45 kg) will be enough 3 pairs of polyurethane foam with Velcro.

    ⚠️ Attention: If the width of the pads is less than the width of the keel of the boat, when moving on an uneven road, the body will “play”, which will lead to a rupture of the PVC seams in the places where the jars are fastened.

    Measure the length of the boat from nose to transom

    - Measure the width of the trailer between the sides

    - Consider the height of the boards (the pieces should not cling to them)

    - Check the compatibility of trailer anchorages (bolts/ribbles)

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    Top 5 mistakes when installing pawns

    Even experienced water-engineers make mistakes that negate the benefits of pads.

    1. Uneven attachment If the pawns are angled, the boat will shift to the side when moving, check the level with a building level or a laser level.
    2. Using self-tapping screws instead of bolts - The vibration on the track quickly unravels the screws, and the paslements fall off.
    3. Absence of depreciation pads - between the lozenge and the metal of the trailer must be rubber or polyurethane gasket 3-5 mm thick.
    4. Too rigid slinging If the boat is drawn to the lodgings without backlash, PVC may burst when heated. Leave a gap of 1-2 cm.
    5. Ignoring centering The boat must lie symmetrically relative to the trailer axis, otherwise there will be an imbalance in movement.

      6. To avoid these mistakes, use them. plywood Cut the layout of the pawns by the size of the boat and check their location before drilling holes.

      What happens if you drive with incorrectly installed beds?

      At 80+ km/h, the heterogeneous load distribution leads to a “swing effect” – the boat starts to swing like a sail, creating a dangerous roll of the trailer, in the worst case it ends in the rollover or detachment of the mounts, especially at the risk of owners of trailers without braking system (for example, "MISA 8106" or "Baby 1.").

      Step-by-step instructions for installing pawns

      For installation you will need:

      • 🔧 Set of wrenches (10, 13, 17 mm);
      • 🔨 Drill with drills on metal (Ø 8-10 mm);
      • 📏 Roulette and marker;
      • 🧲 Magnetic level;
      • 🧴 Sealer for threaded joints (e.g., Loctite 577).

      Step 1. Markup. Put the boat on the trailer and mark the place of contact with the hull with a marker.

      • 🔹 Under the transom;
      • 🔹 Under banks (if any);
      • 🔹 In the nose (at a distance of 30-40 cm from the forehead).

      Step 2. Drilling holes. Drill holes in the trailer frame using a drill 0.5 mm smaller than the bolt diameter. To protect against corrosion, treat the edges of the holes zinc-spray.

      Step 3. Installation of the pads. Hold the passements with bolts, put rubber washers. Tighten the nuts cross-to-cross to avoid distortion. Push time is 15-20 Nm (use a dynamometer key).

      Step 4, check. Lay the boat on the beds and check:

      • 🔹 No backlash when swaying;
      • 🔹 uniform fit along the entire length;
      • 🔹 The possibility of free pulling slings (without deformation of PVC).
      💡

      Before your first trip, wrap the slings around the beds. rag-tag This will prevent slippage and protect PVC from rubbing.

      We have tested 5 models and made a rating on the ratio of price / quality:

      Model Materials Max, load. Price for a couple, RUB Features
      BoatMaster Premium Polyurethane + aluminum core 250 kg 3 200 Roller inserts, height adjustment
      Wave-HN Standard EPDM rubber 200 kg 1 800 Resistant to sea water, complete with bolts
      PolyBoat Eco High-density polyethylene 150 kg 1 200 Budget option, suitable for boats up to 4 m
      HydroFox Pro Polyurethane foam with cordurah cover 120 kg 2 500 Soft, does not scratch PVC, but requires drying

      For most tasks, enough is enough. "Wave-HN Standard" It's the best combination of price and reliability. If you want a premium roller version, take it. BoatMaster PremiumHowever, keep in mind that they are 30% heavier and require a reinforced trailer frame.

      Care and storage of lodgings

      To make the pawns last longer, follow simple rules:

      • 🧼 After each use, wash them. freshwater (especially if you are on the seaside)
      • 🌞 Keep in the shade - UV rays destroy polyurethane and rubber;
      • 🧴 Once a season, treat with silicone lubricant (for example, WD-40 Specialist);
      • ❄️ In winter, remove the lodgings from the trailer and store in a heated room (at -30 C, polyethylene becomes brittle).

    If there are cracks on the pawns, do not try to seal them - it is better to replace them. The destroyed material loses up to 70% of its depreciation propertiesThis leads to micro-damage to PVC.

    💡

    EPDM rubber lasts longer than polyurethane, but requires regular cleaning of sand, which acts as an abrasive.

    FAQ: Frequent questions about lodgings for PVC boats

    Can I use kayak lodgings for a PVC boat?

    No, kayaking paddings are designed for less weight and have a different shape (usually V-shaped). flat-circular Lodements width from 8 cm The exception is universal models with adjustable supports, but they are more expensive than specialized ones.

    How to fasten the pads to the trailer without welding?

    Use it. lamb-nut-bolt or stainless-steel clamps (for example, «Norma 304»For trailers with wooden floors will be suitable wood-shoe It's corrosion-resistant, and the key is to keep the depreciation pads in mind.

    How many pawns do you need for a boat 5 meters long?

    Miimum: 5 pairs (one pair per metre of length + one pair in the bow) If the boat is heavy (over 100 kg), add another pair in the middle. The spacing should not exceed 80 cm.

    Can you make the slacks yourself?

    Yeah, but only from frost-resistant polyurethane foam (density not less than 30 kg/m3) or rubber-mat Homemade logs made of wood or foam will quickly get soaked and lose shape. stainless studs M10.

    Example of drawing:

    


    | Length: 50 cm |
    

    | Width: 10 cm |
    

    | Thickness: 5 cm |
    

    | Material: EPDM rubber |
    

    | Holes: 4 pcs (Ø10 mm) |
    How to avoid the creaking of pads when moving?

    The screeching is caused by friction between the losagement and the metal of the trailer.

    1. Put it on. graphite on the contact surfaces;
    2. Put it down. fluoroplasty between the bed and the frame;
    3. Secure the pads through rubber-sleeves (Sold in auto parts stores).