Slot car racing

Slot car racing (also called slotcar racing or slot racing) is the competitive hobby of racing with powered miniature autos (or other vehicles) which are guided by grooves or slots in the track on which they run.

Slot cars are usually models of actual automobiles, though some have bodies purpose-designed for miniature racing. Most enthusiasts use commercially available slot cars (often modified for better performance), others motorize static models, and some "scratch-build," creating their own mechanisms and bodies from basic parts and materials.

Slot car racing ranges from casual get-togethers at home tracks, using whatever cars the host makes available, to very serious competitions in which contestants painstakingly build or modify their own cars for maximum performance and compete in a series of races culminating in a national championship. Some hobbyists, much as in model railroading, build elaborate tracks, sculpted to have the appearance of a real-life racecourse, including miniature buildings, trees and people, while the more purely competitive racers often prefer a track unobstructed by scenery.

Slot car racing was a popular fad in the 1960s, with sales reaching $500 million annually, including 3,000 public courses in the United States alone. The fad sputtered out by the start of the 1970s as amateurs felt squeezed out at races and stayed home in additions to competitions against the radio-controlled car market.

There are three common slotcar scales used for competition:

In addition to the major scales, 1:43 in 2006 slot car sets are generally marketed as children's toys. So far, there is little organized competition in 1:43, but the scale is gaining some acceptance among adult hobbyists for its affordability and moderate space requirements. An average car would be 4.3" (10.9 cm).

Many home racetracks are made from the injection molded-plastic snap together track sections found in race sets; these courses are known as "Plastic Tracks".

Shop and club tracks used for competition (especially in 1:32 and 1:24 scales) are usually hand built "Routed Tracks" in which the guide slots for the entire racecourse are routed into one or a few large pieces of sheet material (such as chipboard or Medium-density fibreboard) providing a smooth and consistent surface.

...
Wikipedia