A locomotive runs by picking up an electrical current from the metal rails through metal wheels that ride on the rails. The electricity is transferred from the wheels to the motor, which causes the motor to run.

The motor connects to the wheels through a mechanical drive system. When the electricity turns the motor, the motor turns the gears that turn the wheels and push the locomotive along the train tracks. Simple!

The contact point where your locomotive wheel meets the rail is extremely small. That’s why; it doesn’t take much in the way of dirt, dust, or debris to obstruct the wheel-to-rail contact. Dirt can build up, so it is important that you keep the wheels clean and free of accumulated dirt. If the wheels of your locomotive become dirty, they may not make good contact with the metal rails, and your train will stall. Remember, plastic wheels don’t conduct electricity.

Locomotive Wheels And Locomotive Gears

A good locomotive needs lots of wheels and lots of gears. A poor performing locomotive is often because of the gears and/or the wheels. Although in saying that, some locomotives with only a few wheels work surprisingly well… although it is considered to be unusual, rather than the norm.

By Robert Anderson – Author of the best-selling Model Train Help ebook.