The inflatable swimmer is always about logistics, from storage to descent, and if it's enough for small models to just carry them on their hands, then as the length of the body and the power of the outboard motor increases, it becomes a lot of physical work. nosecartIt is an indispensable assistant for the owner.
This device allows one person to easily move a boat on hard ground, lower it on a gentle shore and drag it back after fishing. Many beginners underestimate the importance of this accessory, relying on physical strength, but after the first season with full load change their minds.
In this article, we will discuss in detail what types of nose trolleys exist, what materials are best made of and how to properly fix the structure on the bottom of your boat. You will learn about the nuances of operation of various modifications and will be able to choose the best option for your boat. PVC boatLet’s look at the technical aspects that are often overlooked when buying or building.
Why You Need a Cart and How It Works
The main function of a bow ladder or trolley is to redistribute weight, and when you drag the boat by the nose, the main emphasis is on the mounting point, creating a lever that lifts the stern, which allows you to roll the boat on the front wheels only, without touching the bottom of the ground, without such a device you would either have to drag a heavy load with a drag, risking the cylinders, or use a full-fledged trailer, which is not always convenient on wild water bodies.
The design is usually a frame made of profile pipe, which is attached to the transom plate or inserted into special sockets on the bottom. nose-hold It can be fixed or removable, and in the first case it is always on a boat, in the second case it is installed only when you need to transport by land, and removable options are popular among those who value minimalism and do not want to weigh the structure while swimming.
The key here is the fixation mechanism, which has to withstand dynamic loads when driving through irregularities, but also allow you to quickly dismantle the trolley. Often a system of pins that enter the reciprocating parts on the transom, or clamps that cover the cylinders, is used, it is important that when moving the trolley does not rub against PVC, otherwise the scuff will only be a matter of time.
⚠️ Attention: Never use a boat trolley to lower steep concrete slips at an angle of more than 15 degrees without insurance. The design may not withstand the increased pressure on the front axle, which will break the frame or damage the transom.
There are two main types of designs for the way they move: gurneys and wools. Rollers are equipped with pneumatic or cast wheels of large diameter, which allows you to overcome sand and grass.
Design features and materials of manufacture
When choosing or manufacturing a nose trolley, attention should be paid to the frame material. It depends on the durability of the product and its weight. The most common option is an aluminum profile or pipe. Aluminum does not rust, which is critical for contact with water, and has sufficient strength. However, it is more expensive than steel and requires careful welding in the argon environment.
Steel structures are more common in the budget segment or in homemade versions. It uses a profile pipe, painted with powder paint or treated with special compositions. Stainless steel It's a perfect but expensive material that comes in premium accessories, and conventional black steel requires constant maintenance, because any piece of paint will cause corrosion that quickly spreads to the fasteners.
Wheelbase is the second important element. Sand and dirt are ideal for 300 mm inflatable wheels, similar to those used in garden wheels. They provide excellent cross-country performance. Cast polyurethane wheels are not afraid of punctures, but they are less cushioned and can get stuck in soft ground. The choice depends on which shores you most often have to drag the boat.
Comparison of frame materials
Aluminum: lightweight, non-rust, expensive, hard to cook. Steel: heavy, rustless, cheap, easy to cook. Stainless: perfect in all respects, but very expensive and difficult to process.
The fasteners must be made of materials resistant to seawater and ultraviolet. Plastic clamps quickly degrade in the sun, becoming brittle. Metal bolts and nuts must be made of stainless steel brand. A2 or A4Using conventional ferrous metal will result in the fact that after a season you will not be able to unscrew the connections due to rust.
Ways to fasten the cart to the boat
The way you fix the cart on the hull determines the ease of use and safety of the boat. There are several popular installation schemes, each of which has its own advantages, depending on the design of your boat, the presence of a transom plate and personal preferences.
The most reliable is the mounting to the slab, in which case the trolley has two vertical pins that are inserted into holes drilled in the plywood of the translatum. On the back side of the plate is reinforced with metal plates, which creates a rigid bundle that excludes the backlashes, but this method requires the drilling of the translatum, which is unacceptable for some owners.
The second option is to use a hinge brane and a sling, and the cart is L-shaped and clings to the top of the side or to special belts that run under the bottom, which does not require drilling, but may be less stable when moving on the rocks. slingSo as not to damage the PVC material under tension.
The third is a combination, often used in factory models, where the cart is inserted into pockets or hinges sewn to or glued to the balloon, and this requires professional intervention when installed, because improperly pasting the loop can depressurize the cylinder, but when assembled, it looks the most aesthetically pleasing.
☑️ Check before installing the trolley
Any way you attach it, you have to use shock absorbing pads, rubber or neoprene inserts between the metal of the trolley and the boat hull, and without them, the metal will be rubbed against the PVC, rubbing it to the holes, especially when you're driving on asphalt or rocky roads.
Manufacture of a nose trolley DIY
For many aquatic motorists, hand-crafting accessories is not only a way to save money, but also an opportunity to get a product that fits perfectly for a particular boat. The process begins with design. You have to measure the width of the transom, the height of the cylinder, and determine the required length of the breath, and you can find it online or develop it yourself using simple geometric calculations.
You'll need a square-sected tube (e.g., 20x20mm or 25x25mm), wheel pair, bolts, nuts and metal cutting tools. If you've chosen aluminum, you'll need TIG welding. You'll need conventional electrode or semi-automatic welding. It's important to keep geometry in order to keep the trolley from swaying the boat.
The frame is assembled by creating a main arc that circles the bow of the boat, then welding or fastening vertical struts to attach to the transom, and then placing the wheeled axle, so that the center of gravity of the laden boat is slightly ahead of it, allowing for easy stern lifting.
| Parameter | Optimal value | Minimum value | Maximum value |
|---|---|---|---|
| Frame pipe diameter | 25 mm | 20 mm | 40 mm |
| Diameter of wheels | 350-400 mm | 250 mm | 500 mm |
| Distance between pins | The transom | 200 mm | 600 mm |
| Load capacity | 150 kg | 100 kg | 300 kg |
Once assembled, the structure needs to be painted or anodized, even if aluminum is used, additional protection is not inappropriate, and epoxy soils and paints designed for body repair or metal protection are better used for painting, which will give the product a presentation and prolong its life.
When welding an aluminum frame, use argon and a filler of the same brand as the base metal, which will provide a durable seam that will not burst when vibrating.
Installation and configuration of equipment
The process of putting a cart on a boat requires care and technology. First, try it on without fixing it, see how it sits, whether it's swaying the boat, whether it's comfortable to take up the handle, and if necessary, adjust the angle of inclination of the breath or the height of the mount.
If you use the mounting method through a transom plate, mark the holes. Use a corer to keep the drill from slipping. The diameter of the hole should match the diameter of the mounting pins with minimal clearance to avoid backlash. After drilling, be sure to treat the edges of the holes with sealant or varnish to prevent moisture from entering the plywood.
To protect the PVC material in the contact with the metal, stick additional strips of dense transporter tape or special PVC tape for repairing boats, this will create a buffer layer, and you can also use Cambrians or shrink tubes, wearing them on the metal parts of the frame that contact the sides.
⚠️ Attention: When drilling a transom, only use sharp drills on wood or metal (depending on the skin). A dull drill can swollen plywood fibers or melt plastic, which will weaken the structure in the future.
Once installed, test runs with an empty boat, then loads. Pay attention to the behavior of the trolley on the corners. If the boat starts to waggle strongly, it may be worth reducing the base or moving the mounting point closer to the center of gravity. A properly tuned trolley should go smoothly, following the direction of the operator's movement.
Operation, care and storage
Like any equipment, a nose trolley requires regular maintenance. After each trip, especially on salt water or mud, the structure must be washed with fresh water. The salt aggressively affects welds and threaded joints, even if stainless steel was used. Sand stuffed into wheel bearings can quickly disable them.
Once a season, it is recommended to inspect the fasteners. Check the nuts tightening, because they have the ability to unscrew from vibration. Use a thread or counternut fixer when assembly. Check the wheels for cracks and tread wear. If the wheels are pneumatic, check the pressure before each trip.
Keep the cart in a dry, unassembled or unconnected form, and long exposure to ultraviolet light destroys plastic wheel elements and rubber seals. If the cart is stored outside, cover it with an opaque awning to prevent paint from burning out and materials from aging.
Timely lubrication of moving parts prolongs the life of the mechanism. Use silicone or lithium lubricants that are not washed away with water and do not harm PVC. Regular care will allow the cart to last for decades, remaining a reliable assistant in all conditions.
The main secret of long service trolley - the absence of constant contact "metal-PVC" and regular washing from salt after each release to the water.
Frequently Asked Questions (FAQ)
Can I use a bow trolley for hard bottom boats (HDBs)?
Yes, but with caution, boats with hard floorboard bottoms are heavier, so the frame of the trolley must be reinforced, it is important that the supports do not press on the joints of the floorboards, otherwise the bottom may fracture when the stern is lifted, and it is better to use models with a wide platform.
What wheel diameter should I choose for a sandy beach?
For sand and soft mud, wheels ranging in diameter from 350 mm and above, preferably pneumatic. Narrow small-diameter wheels (100-150 mm) will instantly sink in the sand, and you will have to drag the boat using a trolley as a sleigh.
Do I need to remove the cart before getting on the water?
Most of the time, yes. Stationary trolleys create additional water resistance and can impair the boat's performance, especially on planing. Removable models are removed before descent. You can only leave the trolley if it is specifically designed for this (sleek shape, light weight) and does not interfere with the engine.
Will the homemade cart withstand a boat 4 meters long with a motor?
With proper calculation and use of a profile pipe with a wall thickness of at least 2 mm - will withstand. The main thing is to make high-quality welds and use a reliable fastener to the transom. However, for boats heavier than 200 kg, it is better to consider factory reinforced models or a trailer.