Slot car racing involves a car’s weight, speed, and ability to stay on the track. Making a few simple modifications will greatly improve your cars track worthiness. A slot car is built on a very simple premise. It’s simply a plastic body sitting on top of an electric motor that gets it power through two “brushes” connected to the motors positive and negative terminals that make contact with two electrified power strips that are imbedded in the race track’s surface.I was looking for more information and found it here. Magnets on the cars undercarriage pin it to the track. The speed of the slot car is determined by the amount of pressure applied to the racers control trigger.
Modifying these cars is not exactly rocket science, but depending on how much you want to spent on modifications to your slot car, will be the deciding factor in how well you can make it perform. You can
replace the motor to produce optimum speed, but the motor doesn’t determine the speed itself. You can rewire your controller by experimenting with all kinds of feats of electronic engineering. You can also changing the cars magnets will also effect the cars speed as well as handling. Another way that you can manipulate the cars handling is by changing tires. Different compounds grip the track differently.