Fist anchor rum: reliable anchor of your inflatable boat

Any experienced angler or water lover knows that the stability of the watercraft directly depends on the quality of its equipment. Fist anchor rum It's one of those subtle, but critical, elements that make it safe to park in the current or in the high wind, and unlike simple rings or brackets, it allows you to instantly lock the anchor shaft and poison it just as quickly without the risk of getting tangled or missing the gear.

Inflatable boats from PVC They have their own specifics of operation: the side is soft and the surface is slippery, so conventional fastening methods here work poorly. Using a specialized rotary-cam bolt solves the problem of reliably fixing the rope even under load. The right piece of equipment, when properly selected and installed, turns chaotic anchor tugging into a manageable process, preserving your nerves and equipment integrity.

In this article, we will discuss in detail why cam design is considered the standard for small craft, how not to make mistakes when choosing material and size, and also step by step describe the process of inserting the device into the side. Understanding the principles of operation of this unit will help you avoid common mistakes that often lead to the loss of anchor or damage to the cylinder.

Design features and principle of work

The mechanism is based on a movable element, a cam that is spring-loaded or screwed, and when it is calm, it is pressed against the hull, forming a smooth surface through which the anchor rope passes freely. When it becomes necessary to fix the boat, it is enough to simply pull the throttle, and the cam will automatically jam the rope, preventing it from slipping.

Anchor descent or temper depth changes do not require untying knots or complex manipulations. A slight movement of the arm or relaxation of tension (depending on the model) allows the façade to slide freely downward. Automatic locking This is a key advantage, which is especially valuable in situations where the hands are occupied by a rod or motor, and the boat begins to tear down the current.

Modern models often come with additional protections, such as rubber pads that prevent the delicate material from being rubbed against hard metal or plastic, and some versions have a swivel base that allows the angle of exit of the rope to be changed, reducing the risk of damage to the side when rolling.

⚠️ Warning: Never use metal boats on thin inflatable sides without additional reinforcing washers, as the sharp edge of the metal can damage PVC when loaded.

Manufacture materials

What's better?

Most quality crisps are made from AISI 316 stainless steel, which is resistant to corrosion in salt water. Budget options can be made from silumin or durable plastic. Silumin is cheaper but fragile under impact loads, so steel or brass is preferred for serious use.

Selection criteria: material, size and load

The choice of suitable device depends on the size of your boat and operating conditions. For small single boats up to 3 meters long, a compact model with a pin diameter of 6-8 mm is enough. Larger vessels require reinforced structures that can withstand significant jerking loads in wind or current.

When buying, pay attention to the quality of surface treatment. The parts should not be sharp edges, burrs or foundry defects that can damage both the anchor shaft and the boat cylinder itself. Tightness landing is another important parameter provided by the presence of high-quality sealing rings in the kit.

There are several main types of fasteners that affect the choice:

• 🔩 The thread connection: The classic version, where the bolt passes through the side and is fixed by a nut on the inside.
• 🧩 Sticking models: have a broad base, which is glued into the material, ensuring the distribution of the load over a larger area.
• 🔄 The turning mechanisms: They are equipped with a slip bearing, which allows the rope to change direction without twisting.

It is also important to consider compatibility with your anchor. If you use heavy cat anchors with sharp paws, the rim mechanism must be powerful enough to withstand the weight and inertia of such a load when sampled.

Necessary tools and preparation for installation

Installation anchor-bolt An operation that requires precision and precision, as it involves a breach of the integrity of the cylinder, a drilling error may require major repairs, so preparation must be thorough and all tools must be in good working order and suitable for PVC.

First of all, you need to mark the installation site, and you usually have a squirrel mounted on the bow of the boat, strictly on the diametric axis, so that when anchoring the boat does not turn sideways, you need a drill with adjustable speed, special drills for PVC or metal (depending on the type of drilling), and a set of wrenches.

Don't forget to prepare a degreaser (for example, alcohol or a special cleaner for PVC) and glue if the model requires additional sealing of the seams. Even if the fry is purely threaded, additional smearing of the joints with a special composition will increase the reliability of the connection.

List of required equipment:

• 📏 Roulette or ruler for accurate center marking.
• 🖍️ A PVC marker that is easily washed off after completion.
• 🔧 The set is drilled (you need to start with a small diameter, gradually increasing).
• 🧴 Degrease and rags without pile.

Step-by-step instructions for DIY installation

The installation process can be divided into several steps, the observance of which ensures the tightness and durability of the connection. First, carefully degrease the selected place on both sides of the board, this will ensure the best fit of seals and glue (if used).

Next, drill the hole. Start with a small diameter (3-4 mm) drill to make a center hole, then carefully drill it to the desired size. Diameter of the hole It must correspond to the diameter of the threaded part of the bolt, but be minimally necessary for free passage.

Drilling sequence:
Central opening 3 mm.
2. 6mm drill.
Final drill 8-10 mm (in terms of bolt size).

After drilling the edge of the hole, it is recommended to slightly slap fine sandpaper to remove the burrs. Then apply a thin layer of sealant to the bolt thread and to the end of the washer. Insert the bolt outside, put on the inner washer and twist the nut. Tighten the connection evenly, avoiding distortions that can lead to deformation of the material.

⚠️ Attention: When tightening the nut, use a dynamometer key or act very carefully manually. Excessive force can cut through the sealing ring or deform the PVC, which will lead to depressurization.

Comparison of models and technical specifications

There are many modifications to anchor devices on the market, and to avoid confusion, we suggest comparing the basic parameters of popular types of crims in the table below, which will help you make informed choices based on budget and reliability requirements.

Parameter	Budget plastic	Silumin (alloy)	Stainless steel
Weight.	Very light.	Medium.	Heavy.
Corrosion resistance	High.	Medium (oxidized)	Maximum
Threatness	Low.	Medium	High.
Price.	Low.	Medium	High.

Plastic models are great for light inflatable boats and calm water, where there is no risk of catching snags with great effort. Siluminous options are the “golden mean”, but they require regular inspection for microcracks. Stainless steel - the choice of professionals, guaranteeing work in any, even extreme conditions.

Operation, maintenance and security

Proper operation prolongs the life of not only the fish but also the anchor thalf. After each fishing, especially in salt water, it is advisable to wash the mechanism with fresh water. The salt, drying, cries and can make it difficult for moving parts to move.

Check the condition of the anchor rope at the contact point with the cam regularly. If you notice the hair or damage to the braid, immediately replace the site or the entire fold. Ignoring this rule can lead to the anchor breaking at the most inopportune moment.

Also worth checking is the condition of the sealing rings, rubber blubbers over time and loses elasticity, and if you notice that there is moisture or etching in the attachment site, replace the seals with new ones, after cleaning the seats.

Frequently Asked Questions (FAQ)

Can I install a cam rum on an already glued reinforcing pen?

Yes, it's even a preferred option: Installing directly on a reinforced pen (a beam or a special sling) distributes the load and reduces the risk of damage to the main cylinder, the main thing is to choose the right length of the bolt so that it passes through all layers.

What if the anchor shaft is still stuck in the shaft?

Don't use excessive force pulling a rope, it can damage the mechanism. Try to slightly relax the tension by shaking the boat, or tap the body of the redhead (if it is metal) to relieve vibration. If the jamming is due to dirt, wash the mechanism with water under pressure.

Do I need to use a lock nut (grover) when installing?

The use of a second counternut or grover is not recommended if the design of the rimmer already provides for a reliable self-contacting connection. Extra elements can make it difficult to access the nut inside the narrow space of the inflated cylinder and complicate maintenance.

What diameter of the hole to drill under a standard rim bolt?

Usually, a hole with a diameter of 8 mm or 10 mm is drilled under standard fishing shell bolts. The exact size is always indicated in the product passport or on the package. The drill must be strictly perpendicular to the surface so as not to damage the sealing ring during installation.