BBLOCK 2: Body of Article
The lower part of the car is constantly exposed to aggressive effects of the road surface, especially in winter, when reagents and abrasive crumbs destroy the paintwork. Front bumper lip lining It becomes not just a stylish accessory, but also a necessary element of protection, prolonging the life of body elements. Many owners underestimate the importance of this component until they encounter the first serious chips or cracks on the plastic.
Installation of such an element allows to significantly improve aerodynamic characteristics, press the front of the car to the road at high speeds and hide the existing defects. In this article, we will discuss in detail the types of linings, materials of manufacture, installation features and nuances of care, so that you can make an informed choice for your car.
Functional purpose and types of linings
Main objective splitter The bumper lips are the control of airflows. When driving at high speeds under the bottom of the car, a high pressure zone is created, which seeks to raise the front axle, worsening the grip of the wheels with the road. Well-chosen liner Redirects air, reducing lift and increasing downforce.
However, in addition to aerodynamics, this element performs a critical protective function. The bumper's lip takes on the blows of small stones, gravel, curbs and snow. Without protection, an expensive bumper quickly loses its presentation, requiring expensive repainting or replacement.
There are several main types of linings that differ in design and method of attachment:
- ๐ splitter A rigid pad attached to the lower edge of the bumper, often with vertical elements (fins) on the sides to cut off air.
- ๐ก๏ธ Protective strip (tread) - a thin rubber or polyurethane lining that repeats the curves of the lip, the main purpose of which is to protect against scratches.
- ๐จ Decorative overlay - a tuning element that changes the visual perception of the car, is often made of ABS plastic for painting.
- ๐ง Universal lip - a product that requires fitting and trimming for a particular model of car, most often from polyurethane.
The type of choice depends on your goals: if you need maximum protection of parking contacts, a soft one will suit. polyurethane. For a track or aggressive driving requires a hard carbon Or fiberglass with the right profile.
Overview of materials: from plastic to carbon
Quality and durability lip-plate It depends on the material of manufacture. The market offers a wide range of solutions, each of which has its advantages and disadvantages. Understanding the properties of materials will help avoid disappointment in the operation process.
The most common material is ABS plastic. It is a tough but fragile material that holds its shape perfectly and is easily stained. However, with a strong blow on the curb, ABS will crack rather than remember. Recovery of such a pad requires soldering or replacement.
The second most popular is polyurethane. It is an elastic material that can restore shape after deformation. Polyurethane linings are almost not afraid of impacts at low speeds and frosts, but they are more difficult to paint and can lose geometry at very high temperatures.
The secrets of carbon linings
Carbon linings have maximum rigidity and minimal weight, but they are extremely sensitive to point impacts. When hit by a stone, the carbon can be layered, and repairs will cost more than the cost of a new piece of plastic.
For the premium segment and motorsports used carbon (carb fiber) This is a standard of strength and lightness, but the cost of such products is high. Fiberglass is a budget alternative to carbon, it is heavier and requires careful preparation before painting, but allows you to create complex shapes.
| Materials | Strength | Flexibility | Difficulty painting | Price. |
|---|---|---|---|---|
| ABS plastic | Medium | Low. | Low. | Low. |
| Polyurethane | Tall. | Tall. | Medium | Medium |
| Plastic glass | Medium | Low. | Tall. | Low. |
| carbon | Very high. | Absent. | Tall. | Very high. |
When choosing a material, it is important to take into account the climatic conditions of the region. In the northern latitudes, where temperature variations are significant, polyurethane It will be better than hard plastic, which in the cold becomes brittle.
Preparation of surfaces and tools
Quality installation lip-plate It is impossible without proper preparation. Errors at this stage will lead to the fact that the part will fall off at the first wash or will rattle on the go, irritating the driver and passengers. All tools and supplies must be prepared in advance.
The first thing to do is to clean the installation site. The bumper lip is the area where most dirt, bitumen and reagents accumulate. Use special bitumen stain cleaners and degreasing agent (for example, antisilicone) to remove all contaminants.
โ๏ธ Installation tools
If the lining is installed on a sticky base (bilateral tape), the surface should be perfectly clean and dry. For mechanical fastening, a drill with drills over plastic will be required to avoid cracks during drilling. You may also need a dryer to heat parts in winter.
Don't forget. pramer (adhesive soil) If you plan to use a glue sealant or scotch, applying a primer to the bumper plastic and the pad itself will significantly strengthen the grip. This is especially true for polypropylene bumpers that are poorly glued.
It is also important to check the completeness of the patch itself. Often, cheap sets lack the necessary bolts or clips. Pre-purchase stainless steel metals to avoid corrosion after six months of operation.
Installation technology: step-by-step instructions
The installation process depends on the type of attachment, but the basic principles are similar for all models. First, fitting is done. Put it in. liner To the bumper, make sure that the gaps are uniform, and the geometry coincides with the lines of the body.
If you use a combined method (scotch + screws) that is the most reliable, proceed as follows. Plug the places of future holes with paint tape so as not to damage the varnish during marking. Carefully mark the drilling points with a marker.
โ ๏ธ Warning: Drill holes only at low drill revs. The high speed of rotation of the drill can melt the bumper plastic or cause chips around the hole.
After drilling, be sure to treat the edges of the holes and the inside plastic-plastic. This will prevent the paint from oxidizing and detaching in the future. Apply double-sided tape (recommended 3M VHB) on the inside of the lining.
Remove the protective film from the tape, press the pad to the bumper and fix mechanically screws. Twisting bolts without excessive effort to avoid pushing the plastic. After installation, it is recommended to warm up the joint site with a building hair dryer (temperature about 60-70 degrees) to activate the adhesive layer of scotch.
If you install the overlay in winter, be sure to bring the part itself and the tape in a warm room for a few hours before installation. Cold glue will not provide reliable grip.
The final stage is the removal of excess sealant (if used) and car wash. Complete polymerization of adhesives takes from 24 to 72 hours, so it is advisable to avoid high-pressure sinks during this period.
Painting and Styling of the Element
Most of the pads are sold in black or in soil. For a harmonious appearance, they must be painted in body color or left contrasting. Painting. lip-plate It is not much different from the painting of the bumper, but has its own nuances due to the shape of the part.
The surface is matted with an abrasive P400-P600. If the lining is made of polyurethane, use special elastic soils, otherwise the paint will crack when deformed. For ABS and fiberglass, standard acrylic soil is suitable.
Apply the paint in several thin layers, allowing each to dry. The final layer is lacquer. For the bumper lip, which is prone to impacts, it is recommended to use 2K-lacquer (two-component), which is harder and more resistant to scratches than a single-component aerosol.
The use of elastic additives (plasticizers) in paint and varnish is critical for polyurethane overlays, otherwise the coating will burst at the first bending.
If you want to create a carbon effect or other texture, this is done at the base stage, before applying the varnish. However, remember that any texture on the bottom of the car quickly gets dirty and loses its appearance, requiring frequent washing.
Care, maintenance and repair of damage
After installation liner She needs to be taken care of so she can keep her appearance for a long time. Regular washing removes aggressive chemicals from the roads. Once every few months, it is recommended to apply polyrene or ceramic coating on the lower part of the bumper to create a protective layer.
When scratches appear on the plastic lining, they can be polished with abrasive paste. Deep chips on painted parts require spot coloring to stop the spread of rust (if metal is under the paint) or the stratification of plastic.
- ๐งผ Regular washing Removes salt and reagents that destroy the structure of plastic and varnish.
- ๐ก๏ธ Protective compounds Waxes and silants repel dirt and simplify cleaning.
- ๐ Visual examination Check the mount periodically so that the vibration does not weaken the bolts.
โ ๏ธ Warning: When washing the car with a kerkerker, do not bring the nozzle closer than 30 cm to the edge of the lining. A jet of water under pressure can flow under the tape and tear off the part.
If the pad is cracked, do not rush to throw it away. Plastic can be sealed with a special dryer with solder from the same material, and then splashed and repainted. Polyurethane parts are often amenable to bonding with two-component elastic adhesives.
Timely care and proper installation front-bumper This will allow your car to look spectacular for many years and remain protected from road nuisances.
How often do I need to change the pad?
The service life depends on the material and operating conditions. Rubber and polyurethane linings last 3-5 years until they lose their elasticity or color. Plastic and dyed can walk for years if there is no physical damage. Carbon lasts almost forever if there are no impacts.
Does the overlay affect fuel consumption?
In theory, a properly installed splitter improves aerodynamics, which can slightly reduce the flow at high speeds (track). In the urban cycle, the impact on the flow rate is imperceptible, and if the installation is incorrect (producing resistance), the flow can even increase.
Can I install a pad without drilling?
Yes, there are models on powerful double-sided scotch or clips. However, for heavy or large splitters, mechanical fastening (through bolts) is a must for safety and reliability.
Is it legal to install splitters?
In most cases, decorative overlays that do not change the overall height and bumper design are allowed. However, the protruding sharp elements can cause problems during inspection. Always check the current traffic rules.