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Spinning Levers - How A Transmission Works (1936)

US Auto Industry · explainer · Watch on YouTube

Mechanical & precision engineeringCars, EVs & motorcycles

What it is

A 1936 Chevrolet-sponsored film that explains how a car transmission works by treating gears as spinning levers. It uses physical models to make the mechanism clear.

Why Hacker News recommends it

It is held up as a model of clear, well-paced educational film and of the old-era instructional style.

  • 5 people recommended it
  • 5 different months
  • 1 strong recommendations
  • first 2018, last 2026

What HN commenters said

  1. “The editing, pacing, and style were better.”

    Model of good educational film editing, pacing and demonstration.

    Animats, 2019-05 · Strong recommendation · in “Five Hundred and Seven Mechanical Movements (1908)”

  2. “I ended up feeling like I could make a basic transmission”

    Explains transmissions starting from levers and gears as spinning levers.

    jolmg, 2018-10 · Recommendation · in “Why some things are darker when wet (1988)”

  3. “Both make great use of physical models of the mechanisms.”

    Old video using physical models to show how transmissions work.

    MaxBarraclough, 2020-06 · Recommendation · in “Strike a Solder Joint Behind Enemy Lines”

  4. “All of the old US gov't/mil funded education films are pretty good.”

    Part of a list of good old government training films.

    deaddodo, 2023-12 · Recommendation · in “1962 Military Innstructional Video on Magnetic Cores”

  5. “This old training video is great too”

    Training video that also treats gear teeth as levers.

    _xerces_, 2024-11 · Recommendation · in “A 15-minute intro to involute gears”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: transmission, gears, mechanical engineering, vintage film, automotive

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