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dirt racing 101

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Wingless sprint cars are considered the traditional sprint cars, dating back to the first sprint cars in the 1930s and 1940s (that ultimately evolved into Indy cars). Today, they are essentially the same car as a winged sprint car. They generally use the same engines as their winged counterparts, but their tuning and gearing are different for performance at lower RPMs than winged cars. 

While they do not have the same top speed as a winged car (because they lack downforce for traction), they are thought by many to be more entertaining to watch. Their relative lack of grip creates different driving characteristics than their winged counterparts, causing them to be more difficult to control through the corners. This, and the lack of roll-over protection a wing provides, makes them more dangerous than winged cars and their crashes are known for their spectacular nature!!

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Micro sprints

Micro sprints  are smaller versions of full-size sprint cars. A starter class for striving sprint car enthusiasts, they run side-mounted 600 cc motorcycle engines developing around 100 hp and are chain driven. They have chassis and bodies styled like those of full-sized sprint cars or midgets. Micro sprints are generally run on small dirt tracks that are usually a fifth of a mile or less in size, though they sometimes run on larger tracks. They can be either raced with wings or without wings; the latter are sometimes called "micro midgets" or "600 cc sprints".  Micro sprints are generally a cheaper alternative than racing mini sprints or midget sprints, but they can be as expensive as full-sized sprint cars.