Assemble it and discover the principle of working of the Variator. The model kit comes with a QR-code that will forward you to the learning guide about the mechanism, the principal of its working, the main characteristics, formulas, and interesting assignments. Dive into augmented reality and look at how the Variator works. Interact with the model via a special AR application from Ugears. The Variator is a device that transfers and adjusts the engine torque by changing the ratio of gears. Gear ratio can change automatically, manually or within a pre-set program. The term most drivers and automobile enthusiasts are more accustomed with is Continuously Variable Transmission, or CVT. With the Ugears Variator model of the STEM lab collection you can learn and comprehend one of the most important parts of a car without soiling your hands in machine oil!