01.The hazards of using inferior retread tyres
A lot of mo friend to "retread tire" all didn't have too much concept, thought from already won't be so unlucky! But it just happened to be so unlucky? If what motorcycle accessories will be related to the safety of motorcycle friends, it is estimated that there is no more important than motorcycle tires. However, there are still many profiteers in order to pursue profits regardless of the life safety of your friends, even sales of retreaded tires, you small partners in the purchase of motorcycle tires to grow a little heart, polish your eyes to see clearly.
The tire that took off the surface of a layer of skin is a waste tire, the grain is worn out, it is estimated that the motorcycle repair shop will reprocess the waste tires into new tires, and then sell them at the original price. In fact, retread tires are very common, many motorcycle shops in the help of guests to replace the tire, the tire will be put away, and then processed for sale, not only motorcycle tires, car tires and bicycle tires are like this, so you motorcycle friends should be careful when changing tires.
Three ways to identify the refurbished tire!
1 Look at the pattern and color of the tire
First from the grain point of view, because the inferior reconditioning tire processing is not standard, so the grain groove is relatively shallow, and the reconditioning tire usually put the tire color is particularly bright, while the regular new tire will not.
2 Find the tire marker
The brand tires produced by the regular manufacturers, in the motorcycle tires have some signs, indicating the type and performance of the tire, the inner side is printed with a warranty date, tread anti-skid groove wear mark clearly visible.
Generally, the signs of retreaded tires are mostly re-posted. If you scratch these signs with your nails, you can cut off the tire.
At the same time, every qualified new tire will have a special wear mark after leaving the factory. Generally, the outside of the tire will be printed with a TWI or a small triangle mark. Generally, reaching this mark indicates that the tire wear is relatively serious and cannot be used and must be scrapped. And the mark of inferior tire after renovation is affixed by oneself of workshop.
3. Touch the lap between the tread and the side of the tread
First touch the tire side, whether all kinds of signs are complete, each tire manufacturer has the forum pattern code, see if the pattern code and the tire pattern corresponding. Secondly, it depends on whether the joint between the tread and the tire body at the shoulder is smooth and smooth. All the renovated tires are self-made tread bonded to the old tire body. The lap between the tread and the side of the tire is not as smooth and smooth as the new tire, and the tire side has joint traces.
02. The hazard of using inferior spark plugs
Spark plug purchase wading deep, common maintenance shop a spark plug the cheapest ten dollars, better to dozens or even hundreds of pieces, it happened that fool some people on the Internet, still pack mail below $10, broken price.mean-while logo in one year, as a result, many ignorance of the friend is cheated, never showed in this remind you, or a failure to endanger the safety of life!
The spark plug works by converting the high voltage from the packet into an electric spark that ignites a mixture of gasoline and air in the engine chamber to start and run the engine properly. When the spark plug is working, it needs to withstand ultra-high voltage (20,000 ~ 30,000 volts), ultra-high temperature (2,000 ~ 2,500 degrees Celsius) and high explosive pressure (50kg/cm2).
1. The use of poor quality spark plugs will lead to poor material of the center electrode
The central electrode is not made of special nickel alloy material (there is no copper core embedded inside), which has poor thermal conductivity and is very easy to melt. The melting of the electrode may cause damage to the piston and cylinder block and other related parts.
2. Using inferior spark plugs will result in poor insulation quality
Anti-conductive performance (insulation performance) is poor, can not withstand high voltage when ignition, prone to leakage, engine ignition is not normal, not ignition, vehicle jitter and other faults.
3 the use of inferior spark plugs will lead to poor anti-electromagnetic interference ability
There is no resistance inside the spark plug, so it cannot resist EMI, and instead it will generate an EMI signal.
The hazards of using inferior helmets
For motorcyclists, buying helmets is not just about cheap prices. Many of the poor quality helmets with a bright appearance are actually made from a variety of waste plastic bags. As a result, the helmet that protects the biker becomes a killer for the biker.
Most motorcycle friends do not know what is the safety standard of "motorcycle occupant helmet", do not know which helmet brands are trustworthy brands, do not know what kind of helmet is a good helmet, so consumers in the choice of helmet more blindly, not rational. Cheap, good-looking and comfortable helmet choices have become the primary criteria, rather than safety as a priority.
For the safety of yourself and your family, do not buy or use inferior counterfeit motorcycle helmets. Here are some simple ways to identify motorcycle helmets:
01. The shell shall be made of hard and durable materials that can absorb more impact energy; The buffer layer should be made of non-toxic and harmless materials that can absorb more impact energy and cover the head protection area. Gasket with sweat absorption, breathable and other materials; Wear the device to ensure that the helmet and the head contact firmly; The goggles are made of materials that meet the light transmittance and impact force, and the light transmittance is not less than 85%.
The weight requirement of the helmet: full helmet <1.6kg, half helmet <1.3kg, left and right horizontal field of vision >105°, upper field of vision >7°.
There must be fixed marks on the helmet, such as product name, factory name and address of manufacture, trademark, product type, product model, specification, date of manufacture, product batch number or serial number.
Helmets can be divided into large, medium and small sizes according to the head circumference. Large size is 580~600mm, medium size is 560~580mm and small size is 540~560mm. When choosing helmets, you must choose the appropriate number according to your own head circumference.
Helmets should be discontinued after a major collision.
When choosing a helmet, you should also pay attention to holding both sides of the helmet with your right hand and your left hand, then rub your head and wear it upward. When you take it off, it is the opposite. After wearing the helmet, shake it from side to side and try to see if the size is appropriate. You can't weigh a helmet by hand. The correct way is to try it on your head after wearing it. If your neck doesn't feel heavy, you can do it.