Tag: automobiles

The Automobile Transmission

Especially with the popularity of cars with automatic transmissions, many drivers today may forget that there are complicated systems of gears that transmit power from the car’s engine to the car’s wheels. Drivers that can work a clutch and a stick shift are certainly aware of a cars gearing but may be clueless as to how it all goes together.

An educational film from 1936 shows how an automobile’s gearing is put together.

When the film begins, it describes the lever and its mechanical advantage. Soon however the subject turns to gears and the modern (for 1936) automotive transmission.

The gearbox they detail, which was standard at that time, is merely a three speed transmission (plus reverse) and yet it is already fairly complex. It boggles the mind what a modern seven speed gearbox must resemble.

I don’t believe it is the case any longer that public schools offer vocational classes. I remember in middle school (junior high) I took a wood shop class. I enjoyed that experience a great deal. They offered metal shop and automotive shop classes as well.

I imagine the following film might have been shown in an automotive class. It’s wonderful how it describes the problem and then the solution that differential gearing provides in a way most students can probably understand.

An educational look at how things work. More films like this, please.
(The actual education content begins about 1:55 into the film.)

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