An instrument that computes the proportional relationship between the number of teeth on meshing gears in a radio-controlled vehicle, specifically relating motor revolutions to wheel revolutions, is a vital tool. For example, a value of 3:1 indicates the motor spins three times for every single revolution of the wheel.
Understanding this proportional relationship is critical for optimizing vehicle performance. Proper adjustment provides enhanced acceleration, higher top speed, and improved motor efficiency, extending run times and preventing overheating. Historically, calculating this value was a manual, often tedious, process requiring careful counting and mathematical computation.