If you really care so much about motivation, if you are tired of the huge investment in the refit shop, then I will give you a new suggestion. Lighten the car, 0- 100KG will accelerate faster 1 second. If you don't believe me, look at the British Lotus sports car and you will know the mystery. Most people will go to the road of no return and explore the reasons. The most important thing is that they are not satisfied with the dynamic performance of their cars, so they hope to strengthen the power output through modification. There are many ways to improve the power, such as upgrading the natural intake mode from basic intake and exhaust to cylinder expansion to increase the exhaust volume, and changing the turbocharger value into a heavyweight turbine body. These modification methods can effectively improve the performance of the original factory, but the relative price paid is amazing. How to get a certain performance improvement under the limited budget, lightweight is the most economical choice. Advantages of lightweight horsepower-to-weight ratio Before talking about lightweight modification, let's first understand the advantages of lightweight. Readers often write to mention that they think the performance of the car is really flattering, ask about the method of transforming the car, and then add a proviso after the letter, based on the principle of not moving the engine! It can be seen that most people want to change cars, but they don't want to move the engine. They are afraid that the durability of the modified car will be greatly reduced, and they have to worry about spending money, fearing that the car will suddenly break down one day. Therefore, in addition to the basic air intake and exhaust modification, another way to obtain better dynamic response is the modification of lightweight components. By reducing the weight of the car, the horsepower-to-weight ratio is better than that of the original factory without greatly improving the power. Take Mazda 3 1.6 as an example, the original weight is 1240 kg and the horsepower is 107. The converted horsepower to weight ratio is about 1 1.6: 1. Simply put, a horse needs to pull 1 1.6 kg. Looking at the data on the books, readers must feel that there is not much difference. But for a car with small displacement and low horsepower, 50 ~ 70 kilograms is already the weight of an adult. All riders who have driven a car with weak power know that there are obvious differences in a person's overall acceleration. Therefore, under the premise of not changing the power, lightweight modification is a very practical method to obtain good acceleration response! The benefit of lightweight is not only to improve the performance of the car, but also to reduce fuel consumption. Under the same horsepower output, a lighter vehicle weight is a lighter load for the engine. Many people like to bring spare tires and car tools. That's the reason. Under the premise of not stepping on the accelerator crazily, the fuel consumption naturally drops a lot. Lightweight has another advantage, that is, it can also improve the handling stability of the vehicle. After the unsprung weight is really reduced, the bump of the vehicle will be reduced because of the unsprung weight, which will lead to the weakening of the inertia force of the reciprocating motion of the shock absorber, the whole anti-vibration force will be greatly weakened and the vehicle will be more stable. The so-called unsprung weight refers to the movable part from the suspension to the tire, and the wheels, brake kits, tripods and shock absorbers are all included in the category of unsprung weight. So if this part is light, it is not difficult to imagine that the lighter the unsprung weight, the better the effect. First of all, the lighter suspension system can provide better road tracking, because it can minimize the influence of inertia, and natural tires can keenly accept the concave and convex conditions of the road. Shock absorbers and springs can correctly absorb the vibration caused by bumps and reduce the influence of road roughness on the stability of the car body. On the contrary, excessive unsprung weight will cause the load of the suspension system, and the road conditions will make the car body shake, which will greatly reduce the stability of the natural car body. Therefore, the lightweight movement around the wheels can not only reduce the overall weight of the vehicle, but also greatly help the stability of the road. There are many kinds of lightweight materials to consider. After understanding the advantages of lightweight, we should know the matters needing attention in choosing lightweight parts. In fact, in the purchase of lightweight parts, the most important point is the material strength of the parts themselves. Generally, most lightweight parts are made of 6-series aluminum alloy, and there are also 7075 materials with higher strength, but the unit price of 7075 materials is high, which is difficult for ordinary people to accept. 6 series aluminum alloy has good strength, as long as it can be loaded under normal use. Of course, there are still some small places to pay attention to in the lightweight modification of different projects. These small places will be discussed later. As long as we can grasp this principle, we can make lightweight modification worry-free. Next, let's talk about some places that can be stolen. There are generally lightweight parts in the market, and the first thing that everyone thinks of must be lightweight aluminum rings. This move can also be said to be the ultimate trick to reduce the unsprung weight, because the tire moves at the bottom of the suspension system, so the lightweight of this part can show the most obvious effect in reducing the load of the suspension system. This is also one of the ways to avoid using oversized styles. Lightweight aluminum ring can not only reduce the load of suspension system, but also reduce the reverse rotation caused by inertia. This principle is the same as replacing the lightweight flywheel, which can make the engine respond better. Because the lightweight wheel rim has better acceleration and deceleration response than the specific wheel rim, the relative braking performance can also be improved. So is the brake system. We can often see examples of carbon fiber brake discs and magnesium alloy ultra-light wheels on the field. Therefore, the first step of lightweight modification is strongly recommended to start with the rim. When buying this kind of parts, besides paying attention to the material, it is also very important to look at the load value marked on the rim. It is generally recommended to use a light ring with a load value above 600 kg, which can combine strength. A set of excellent lightweight rims can help you reduce the weight by nearly 20kg, which is the highest lightweight C/P value. Don't forget to buy lightweight rim screws when installing lightweight aluminum rings, so that your unsprung weight can be reduced as much as possible. To reduce the unsprung weight, in addition to lightweight tires, aluminum tripod and aluminum brake caliper can also be used together. The brake disc can also effectively reduce the spring load. For the original ventilation tray, there are 48 cooling slots in the tray, while the competitors have 24 modified parts. In addition to the heat dissipation effect, perforated discs also help to reduce weight, but pay attention to the material of the discs, otherwise there is a danger of cracking. Calipers and brake discs made by AP can be said to be representative works of lightweight brake kits. There are also many places that can be stolen lightly in the computer room, and the well-known light Puli disk is one of them. The original Puli disk is mostly made of cast iron, which is a big burden for the crankshaft. Replacing aluminum alloy can reduce the weight by more than half, and camshaft Prix can also be replaced with lightweight type. As for the problem that replacing lightweight Puli will lead to high-speed cold shrinkage of idle air conditioner, as far as the author asks Gretel“Boss ",as long as the disc diameter of lightweight Puli is not reduced, such a situation will not occur. In addition to replacing the pulley, the large and small screws in the engine room can also be replaced with light aluminum alloy products. Don't underestimate how much weight these small screws can reduce. Hundreds of them are also quite heavy. However, aluminum alloy screws should be locked according to a fixed number of pounds, and so should light rim screws. Otherwise, the sliding gear or the material itself will be broken, and it will be very troublesome to repair or disassemble it in the future. In addition, the joints at the end of various high-pressure pipelines in the engine room can also be replaced by "airplane heads", which are light joints used in aircraft as the name implies. In addition to effectively reducing the weight, it can also be replaced quickly in case of tube explosion. However, the unit price of this product is still quite high for competitive use, and riders with sufficient budget can consider it. In terms of power transmission, automatic gearbox can be said to be the key factor affecting the weight of the car. The structure of automatic gearbox is much more complicated than manual gearbox, and of course it is much larger, weighing more than ten kilograms. Therefore, if the car has a manual transmission for circulation, it can also reduce the weight of the car by changing hands, which can effectively reduce the weight of the front of the car and improve the cornering maneuverability. In addition, replacing the lightweight clutch flywheel is also a modification method to kill two birds with one stone, so as to obtain better power output and reduce weight. For example, the function of replacing the crankshaft Ply can effectively reduce the crankshaft load, thus improving the dynamic response, and the lightweight material itself can also reduce the vehicle weight, which can be said to be a high return on investment for killing two birds with one stone. However, the replacement of this product has a small disadvantage, that is, the low-speed torque conversion is poor, but the relatively high-speed response will be better, depending on how the reader chooses. After stealing the heaviest engine block and gearbox block in the engine room, the third battery will be moved next. Generally speaking, the original battery weighs as much as ten kilograms, and the modified lightweight battery is only 2 ~ 3 kilograms. This part of the slimming effect is also quite outstanding. However, the storage capacity of light-weight batteries is weak, and they are mostly used in stadiums, because factories and cars do not have loads such as air conditioners and stereos. However, for commercial vehicles, air conditioners and stereos are daily necessities, so we should pay attention to the capacitance to reduce the battery dead. Therefore, it is not recommended to replace batteries with too small parts. After all, it is king to be able to take care of daily use. High-performance parts are modified to lose weight unconsciously. Many motorists will modify their cars, replace the racing chair and steering wheel to increase the built-in fighting atmosphere, and replace the full-length stainless steel exhaust pipe or titanium alloy tail shock absorber to make the vehicles more sporty. However, in such a modification process, the purpose of lightweight body has been achieved. As far as seats are concerned, an original seat 10 kg is about 5 ~ 8 kg for a general racing chair in the workshop. Racing chairs made of carbon fiber are lighter. If the original car seat is also equipped with electric adjustment function, the weight reduced by replacing two seats will be even more impressive. The steering wheel of the racing car is also lighter than that of the original car, which can reduce the weight of the airbag of the original car. In the modification of the exhaust pipe, most of them are made of stainless steel, which is about one-third lighter than the original factory. If it is a titanium alloy part with ultra-high unit price, it can be lighter by more than half, but the price is too high for ordinary consumers to accept. If you want to steal as lightly as possible, you can remove the back seat, remove the interior decoration, replace the external sheet metal parts such as hood, tailgate cover and door with carbon or glass fiber reinforced plastic materials, and replace the window glass with acrylic materials such as poly * * and propylene. There is no need to cut off the rigid parts and make holes, but this has been biased towards factory-based automobile production, which will consume too much money and time, and the safety of actual road driving remains to be discussed. In addition to professional modification kit to lose weight, don't forget that you can do it easily. Mineral water at the gas station, all kinds of gifts, parts replaced from the original car, spare tires, and sundries in all storage spaces on the car are cleaned up. Adding one to these sundries is also a weight. Together with all the modified products mentioned above, it can reduce about 50 to 100 kg, which is an overall acceleration for small-displacement vehicles with little power.