Go-kart chassis is made of chrome-plated molybdenum tube and has no suspension, so the chassis must be soft and strong enough to be used for suspension and strong enough not to break when turning. Go-kart chassis in the United States is divided into "open", "cage", "in-line" or "offset". All chassis approved by International Karting Committee -FIA or CIK-FIA are "straight" and "open".

Go-karts have no roll cage.

Cage karting has a roll cage around the driver; Mainly used for dirt roads.

In a straight chassis, the driver sits in the middle position. Linear chassis is used in sprint competition.

In the offset chassis, the driver is on the left. The offset chassis is used for left-turn road racing.

Different chassis stiffness makes go-kart have different handling characteristics in different environments. Usually, under dry conditions, a harder chassis is the first choice, while a softer chassis can work better under wet or other conditions with poor traction. The track temperature will also affect the operation, and additional adjustments to the chassis may be required. The best chassis can add or remove ribs on the front, back and side according to the competition situation.

Ordinary go-karts are braked by disc brakes installed on the rear axle. Front disc brakes are used in most drive karts and are becoming more and more popular in other categories. However, this arrangement is not allowed in some categories. The transmission go-kart has two master cylinders, one for the front and the other for the rear, and the front/rear offset can be adjusted.

Without drivers, go-karts in professional competitions usually weigh 165 to 175 pounds (75 to 79 kilograms). Two generations of love, Tony go-karting, Trulli, bierer, CRG, Gillard, Fearless, cosmi, Zanadi, Fa Go-karting and EKS are some famous chassis manufacturers in Europe. Emmick, Coyote, Bandit, Shadow, MGM, Titan, PRC and Margay are American companies that produce go-kart chassis.

engine

Go-karts in amusement parks can be driven by four-stroke engines or motors, while go-karts used in competitions basically use small two-stroke or four-stroke engines.

? Four-stroke engines can sometimes be slightly modified from ordinary air-cooled industrial engines, with a power of about 5 to 20 horsepower. Briggs&Stratton, tecumseh, Kohler, Robin and Honda are all manufacturers of these engines, which are suitable for racing cars and fun karting. Manufacturers such as Yamaha, TKM, Swiss Auto or Aixro (Wankel Engine) also provide more powerful four-stroke engines with power ranging from 15 horsepower to 48 horsepower. Their rotating speed is about 1 1, 000 rpm, and they are specially used for go-karting. Two-stroke engines are usually used for professional go-karting, such as national championships.

? Two-stroke go-kart engines are developed and manufactured by professional manufacturers, such as WTP, Como, IAME (Paris, Comart, Voetje), TM, Vortex, Titan, REFO, Modena Engine, TKM, Pearl River Delta, Yamaha and Rotax. The power of 250cc two-stroke engine can exceed 90 horsepower. At present, the most popular category in the world is the equipment category using TaG 125cc. The latest125cccckf1engine has an electronic speed limit of 16000 rpm. Now most engines are water-cooled; However, air-cooled engines once dominated the sport.

Transmission device [machine] transmission

As shown in the following figure, the outer tire speed w2 of the vehicle is greater than the inner tire speed w 1, so the vehicles we see in daily life generally use a differential to make up the difference between the inner and outer wheel speeds, so as to achieve the purpose of turning smoothly. Considering the use environment and cost constraints, go-kart has no differential. No differential means that the rear wheel will slip when turning; This is achieved through the chassis design. When the go-kart turns, the inner rear tire will be slightly raised. This makes the tire lose some grip, or even slip or leave the ground completely.

Power is transmitted from the engine to the rear axle through the chain. Both the engine and the shaft sprocket are detachable; Their proportions must be adapted to the track to get the maximum power from the engine.

In the early days, go-karting was only directly driven (need to start), but the inconvenience of this setting soon gave birth to club-level centrifugal clutch. Dry centrifugal clutches are now used in many types of vehicles (Rotax Max is an example). As of June 2007, the top international racing cars have switched to 125cc clutch engine.

Wheel tire

Go-kart tires are much smaller than those on ordinary cars. Go-kart rims are usually made of magnesium alloy, aluminum or composite materials. The tire can support more than 2g (20m /s? ), but it depends on the settings of the chassis engine and motor. Some automobile tire manufacturers, such as Bridgestone, Deng Lupu and Maxxis, produce go-kart tires. There are also some professional go-kart tire manufacturers, such as MG, MOJO, Vega, Hoosier and Burris.

Similar to other racing cars, go-kart tires have different types and adapt to different conditions:

Smooth, dry track. There are many different formulas for smooth go-kart tires, ranging from very soft (strong grip but not wear-resistant) to very hard (leisure and rental go-karts, low grip but long life). In international competitions, because drivers can freely choose tires, and because the duration of each round is very short (up to 10 to 20 minutes), these cars generally use the softest tires.

Rainy days or "wet" tracks. "Rain tires" are grooved and made of soft compounds, which are narrower than bare tires. Not all racing cars are allowed to use wet tires.

Special type. For example, spike tires used in cold conditions, or "grooves" used on high-grip soil/clay roads. Tire manufacturers such as Hoosier and Burris also produce some slightly larger grooved tires, which are only used on dirt tracks.

The tire pressure after a cold car and a hot car will also be different, usually around, cold: 8- 13 psi; Heat: 10- 14psi. The tire size of go-karting is generally around 1 1 inch.

Data acquisition equipment

Like other racing sports, go-karting has also developed a variety of data acquisition systems. Through these systems, the driver can monitor some parameters from the display screen fixed on the steering wheel, such as speed, lap speed, lap number, optimal lap number, cooling system temperature, exhaust gas temperature and so on.

Some systems can record the single lap data from sensors, allowing the whole game information to be played back and downloaded directly to a personal computer equipped with data analysis software. More complex systems can handle more complex information, such as lateral and longitudinal acceleration (G force), throttle position, steering wheel position and braking pressure.

Published on 20 19-05-30