A modern automobile needs hundreds of parts all working in perfect harmony. Each component is remarkably complex. Just take the gearbox as one example.
A typical gearbox has more than a dozen gears spinning within centimeters of one another, and they must be positioned with utmost precision. Unfortunately, the gearbox is buried deep inside a typical car so most people never get a chance to see one up close.
If you’ve never seen an actual gearbox in operation, YouTuber V. Idea made one out of cardboard for you to check out:
This is a seven-speed gearbox, including a reverse gear, entirely made out of cardboard and other easy-to-find household items. The video also contains step-by-step instructions, so you can build your own gearbox if you’re so inclined.
If you want to see more car internals, check out this video of a see-through piston engine.
Originally posted on Popular Mechanics