They were the original home-built race cars and their garage builders made use of every available automotive and sometimes non-automotive part they could use. Some cars were even powered by outboard boat motors. Modern amateur cars have advanced in terms of technology, but the racing has the same premise: Drive as quickly around a dirt or paved oval race track. They are characterized by their scratch-built single seat chassis , 4 cylinder front-engine, rear-drive layout, and encompassing roll cage. Due to the scratch-built nature of midget cars, you should be knowledgeable in handling, chassis , suspension, powertrain, aerodynamic and safety design. These six major areas of the car design work as an integrated unit and the designer must have an understanding of how changes to one area affect the others.
Vintage Modifieds, Midgets and Dirt Cars ideas | race cars, vintage race car, vintage racing
Modified stock car racing , also known as modified racing and modified , is a type of auto racing that involves purpose-built cars simultaneously racing against each other on oval tracks. First established in the United States after World War II , this type of racing was early-on characterized by its participants' modification of passenger cars in pursuit of higher speeds, hence the name. There are many sanctioning bodies for modifieds, each specifying different body styles and engine sizes. Modified racing began as race drivers modified their cars to gain a competitive advantage over their fellow competitors. What started out as minor modifications to the cars has now grown to the point that some modified classes are no longer based on any current production vehicles. As time progressed, modifieds grew away from " strictly stock " or " stock cars ", and became akin to both stock cars, and open-wheel cars. Today's supermodifieds have more in common with Indy cars than they do stock cars.
Modified stock car racing
Sprint cars are high-powered race cars designed primarily for the purpose of running on short oval or circular dirt or paved tracks. Sprint cars have very high power-to-weight ratios , with weights of approximately 1, pounds kg including the driver  and power outputs of over horsepower kW ,  which give them a power-to-weight ratio besting that of contemporary F1 cars. Sprint cars do not utilize a transmission but have an in-or-out gearbox and quick-change rear differentials for occasional gearing changes. As a result, they do not have electric starters or even electrical systems other than a ignition magneto and require a push to be started. The safety record of sprint car racing in recent years has been greatly improved by the use of roll cages, and especially on dirt tracks, wings, which increase surface traction, to protect the drivers.
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