Spinning Levers - How A Transmission Works (1936)
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
“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)”
“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)”
“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”
“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”
“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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