The situation when a car suddenly refuses to start or stalls in the middle of the road, is familiar to many drivers. In such moments, the only salvation is often the towing using another vehicle. However, the success of this operation depends not so much on the power of the tractor, but on the quality and correctness of the use of the towing cable or sling. A poor quality product can burst at the most inopportune moment, turning a simple procedure into an emergency.
The automotive accessories market offers a variety of options, from cheap synthetic ropes to professional ones. kevlar cables. Understanding characteristics such as burst load and elasticity is necessary before buying. For passenger cars, the minimum permissible burst load should be at least 2 tons, but the optimal reserve is 2.5-3 tons. Ignoring these parameters can lead to the destruction of the material under dynamic load.
In this article, we will look in detail at the selection criteria, the features of various materials and safety precautions that will save you from injuries and damage to the body. Understanding the physics of the jerking process and static tension will help avoid common mistakes.
Key criteria for choosing a towing sling
The first thing to look at when buying is the fabrication material. It determines the behavior of the product under load. Synthetic variants, such as polypropylene or nylon, have high tensile strength, but have varying degrees of stretching. Elasticity - this is a two-digit parameter: on the one hand, it extinguishes jerks, on the other - can cause an uncontrolled rebound at a cliff.
The second important aspect is the way the hooks are attached. Cheap models are often equipped with hooks that are simply welded to the ends of the sling. With a strong jerk, the welding site may not withstand. A more reliable solution is considered to be forged hooks with carabins or loops stitched with reinforced thread. Kevlar cables, for example, are often equipped with special clips that exclude slipping.
Do not forget about the length of the product. Too short a sling (less than 3 meters) does not give the driver towed time to react and increases the risk of collision during braking. Excessively long (over 6 meters) complicates maneuvering in the city stream and can become an obstacle for other participants in the movement.
- 🚗 Capacity: Choose a product with a margin of safety of at least 30% of the weight of your car.
- 🔗 Type of attachment: Preference is given to forged hooks with locks or reinforced loops.
- 📏 Length: The optimal range for passenger cars is from 4 to 5 meters.
⚠️ Warning: Never use chains to tow modern passenger cars with active safety systems. Hard connection does not extinguish jerks, which can lead to damage to the body elements and transmission during a sharp start or braking.
When visually inspecting, pay attention to the quality of the seams. The threads should lie flat, without protruding ends and passes. If you buy a sling in a package, make sure it is protected from moisture, as some synthetic materials can lose their properties with prolonged wetness and subsequent freezing.
Comparative characteristics of materials: nylon, polypropylene and Kevlar
Understanding the differences in materials allows you to make an informed choice. Nylon Slings are highly durable and can stretch up to 15-20% of their original length. This property makes them ideal for pulling stuck cars where the “spring” effect is required for inertial jerking. However, when wet, nylon can lose up to 10% of its strength.
Polypropylene cables are cheaper and practically do not absorb moisture, which makes them resistant to rotting and frost. They are less elastic than nylon, but more rigid. This is a good option for static towing on a hard surface, where no swing effect is required. Unfortunately, polypropylene wears out faster when friction on these edges.
At the top of the hierarchy are kevlar cables. They combine minimal stretching (less than 3%) and tremendous strength. Kevlar is not afraid of moisture, ultraviolet and temperature changes. The only downside is the high price. Such products are more often chosen by professionals or owners of SUVs.
| Parameter | nylon | Polypropylene | kevlar |
|---|---|---|---|
| Stretching | High (up to 20%) | Average (up to 10%) | Minimum (< 3%) |
| Moisture resistance | Medium (absorbing) | Tall. | Absolute. |
| Strength | Tall. | Medium | Very high. |
| Price. | Medium | Low. | Tall. |
When choosing a material, take into account the operating conditions. If you travel frequently off-road or high-humidity regions, overpaying for Kevlar or quality processed nylon will be justified.
Safety Techniques and Proper Knotting
Safety in towing is not just a recommendation, but a necessity. Even the most durable sling It becomes a dangerous weapon if it is not properly secured. The basic principle: the hook should only cling to regular towing eyelets, which are usually closed with plastic plugs in the bumper. Mounting for suspension elements, levers or steering thrusts is strictly prohibited.
If the standard eyelets are missing or damaged, the use of nodes is allowed. The most reliable and simple node for such purposes is the “bulin” (annular node). It does not tighten tightly under load and it is easy to untie after stress relief. However, the use of knots reduces the strength of the sling to 40-50%, so the margin of safety should be appropriate.
☑️ Checking before towing
It's important to remember inertia. When the snatch energy accumulates in the stretched material. If at this point there is a cliff, the ends of the sling fly away with great speed. Therefore, there should be no people in the zone of possible rebound. It is also forbidden to wind the sling on the hand or fix it with a node around the body part not intended for this.
⚠️ Attention: It is forbidden to tow a car with a faulty braking system or steering by flexible coupling (on a sling). In this case, only a hard coupling or tow truck is required.
Legal aspects and requirements of the SDA
Towing a car is regulated by traffic rules, and their violation threatens with a fine. According to traffic rules, the length of the flexible coupling should be from 4 to 6 meters. This distance is necessary in order for the driver of the towed car to have time to respond to maneuvers in front of the car and have a road view.
On the sling itself, in the middle, a retroreflective element (flag or fabric) of at least 20x20 cm in size should be fixed. This requirement is necessary to ensure that other participants of the movement see the cable, especially in the dark or in bad weather. The absence of this can cause an accident.
The speed of movement during towing should not exceed 50 km / h. Movement on motorways with a towed car on a flexible coupling is prohibited. It is also important that the driver of the towed vehicle has at least 2 years of driving experience (although in practice this is rarely checked, a legal requirement exists).
The driver behind the wheel of the towed car must have a driving license of the appropriate category. Even if the car does not start and the steering wheel is rotated with effort, driving a vehicle requires rights.
What happens if you break the towing rules?
For violation of the rules of towing (incorrect length of the cable, lack of identification mark, speeding) is a fine of 500 rubles (part 1 of article 12.9 of the administrative code of the Russian Federation). However, if the violation leads to an accident, liability can be reclassified into more serious, up to criminal, depending on the consequences.
Caring for the sling and storage in the car
To tow sling served for a long time and did not fail at a critical moment, it must be properly taken care of. After use, especially in dirty weather or winter, the cable should be cleaned of dirt, reagents and moisture. Synthetic fibres They can be destroyed by the aggressive chemicals used in the roads.
The product should be dried in a straightened form at room temperature. Do not use open heat sources, such as a fire or a powerful heater, to speed up the process. High temperatures can damage the structure of the polymer.
Store the sling is best in a special case or bag, in the trunk, away from direct sunlight. Ultraviolet negatively affects most polymeric materials, making them brittle over time. Regularly, at least once a season, conduct a visual inspection for scuffs and tears.
Lubricate the metal hooks of the slings with lithium lubricant before long storage. This will prevent corrosion and jamming of the carbine mechanism, which is especially important after winter operation.
Frequently Asked Questions (FAQ)
Can I use a regular rope for towing?
No, conventional household ropes are not designed for such loads. They do not have the necessary margin of safety and elasticity. When a jerk is made, such a rope will burst instantly, which can cause damage to cars and injuries to people.
What is the minimum length of the sling by law?
According to the traffic rules, the minimum length of the flexible coupling should be 4 meters. The use of shorter cables is prohibited as it does not provide a safe distance for maneuvering and braking.
What to do if the towing eyelets are broken?
If the standard eyelets are damaged, they cannot be used. In emergency cases, you can use knots around the strong elements of the frame or suspension (if they are metal and not plastic), but this carries risks. The best option is to call a tow truck.
Do I need to turn on the transmission on the towed car?
Yes, if it is a car with a manual transmission, it is necessary to turn on neutral gear. For automatic transmission, towing is possible only at the neutral position of the selector (N) and subject to speed and distance limits as specified in the model instruction or to the hanging of the driving wheels.
A properly selected and secured sling is a guarantee that you can help a friend or save your car without additional damage and penalties. Don't skimp on security.