Open-wheel car
| Open-wheel car | |
|---|---|
|
|
| Classification | Vehicle |
| Application | Recreation, sports |
| Fuel source | Gasoline, electric, hydrogen |
| Powered | Yes |
| Self-propelled | Yes |
| Wheels | 4 |
| Axles | 1–2 |
| Inventor | Ferdinand Verbiest |
An open-wheel car (formula car, or often single-seater car in British English) is a car with the wheels outside the car's main body, and usually having only one seat. Open-wheel cars contrast with street cars, sports cars, , and touring cars, which have their wheels below the body or fenders. Open-wheel cars are usually built specifically for racing, frequently with a higher degree of technological sophistication than in other forms of motor sport. Open-wheel street cars, such as the Ariel Atom, are very scarce as they are often impractical for everyday use.
American racecar driver and constructor Ray Harroun was an early pioneer of the concept of a lightweight single-seater, open-wheel "monoposto" racecar. After working as a mechanic in the automotive industry, Harroun began competitive professional racing in 1906, winning the AAA National Championship in 1910. He was then hired by the Marmon Motor Car Company as chief engineer, charged with building a racecar intended to race at the very first Indianapolis 500, which he went on to win. He developed a revolutionary concept which would become the originator and forefather of the single-seater (i.e. monoposto) racecar design.
A typical open-wheeler has a minimal cockpit sufficient only to enclose the driver's body, with the head exposed to the air. In the Whelen Modified Tour and other short track modified series, the driver's head is contained in the car. In modern cars the engine is often located directly behind the driver, and drives the rear wheels; except in asphalt modified cars, such as the Whelen Modified Tour, where the engine is in front of the driver. Depending on the rules of the class, many types of open-wheelers have wings at the front and rear of the vehicle, as well as a very low and virtually flat undertray that helps achieve additional aerodynamic downforce pushing the car onto the road.
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