1920s: How car steering and differentials work - Part 1
This silent movie, produced in the US in the mid-1920s, explains how the steering, drivetrain and running gear work. A lot of the concepts still apply to a modern car, and this video is easy to understand because cars back then had nothing extra - just the essential ingredients to make them go forwards, turn and stop.
We've stabilized and remastered this video, added a soundtrack and generally made it more watchable. The original video is in the public domain and we retrieved it from the internet archive.
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And check out our guide to how modern cars work at www.howacarworks.com