Brian Gitlin shares a script for Autodesk Maya that will allow you to build and animate complex gear systems with the click of a button, providing easy control over size, orientation, thickness, speed, and frame count over the gear.

Model and animate complex gear systems with the click of a button with this MEL script for Maya

The Gear Model and Animation Script will model and animate each gear, ensuring that each gear will rotate at the proper speed and mesh with the previous gears, working out the gear ratios for you. Check out the Gear Model and Animation Script for Maya here.