Most unusual gears : mechanic curiosities!

(ORDO NEWS) — Gears are a symbol of industrialization and one of the key inventions in the history of engineering. But it’s also very interesting!

YouTube channel “OskarPuzzle” – all about gears

American enthusiastic engineer Oskar van Deventer has been inventing and prototyping exquisite mechanical puzzles and systems for about 40 years – usually very strange ones. And for almost 10 years, all this has been posted on the OskarPuzzle YouTube channel.

A good example of Oscar’s work is this video, which shows “irrational” gears. Those systems that we are used to in everyday life and in technology are characterized by a certain gear ratio – 3:4 or 1:100 – but irrational ones can be anything, including fractional ones and even irrational ones, such as the number Pi. The video shows a device with a gear ratio equal to the “golden ratio” – 6.47213617 … to 10.47213617…

Gear Mechanism: Numberphile YouTube Channel

The topic of today’s video review will be extremely boring: mechanical transmissions and gears, simply put, gears. However, upon closer examination, this topic turns out to be not at all boring, but even exciting.

Imagine, for example, three gears coupled with each other in pairs: such a system cannot rotate. However, if we think better and abandon the classic round shape of the wheels, we will make it all work.

Henry Segerman, an artist and mathematician, who, by the way, was the hero of one of the publications in the magazine Popular Mechanics, showed several such witty constructions on the air of the Numberphile channel.

YouTube channel of the Vietnamese engineer “Thang010146” about mechanisms

A whole encyclopedia of gears and other mechanisms was modeled, animated and posted on YouTube by Vietnamese engineer Nguyen Duc Thang.

Over 2100 videos showing everything from highly specialized and complex to simple and versatile systems, such as the mechanism that turns intermittent rotation into continuous rotation.

Despite the venerable age of the animations, they are in great demand: Mr. Tang’s videos have been viewed almost 14 million times.

Gears: Gear Down For What YouTube Channel

The Gear Down For What? channel is also dedicated to gears and gears. Its authors also repeated the famous find of another hero of Popular Mechanics, artist Arthur Ganson , who connected 12 gears into a mechanism with an incredibly large gear ratio.

The first wheel in Ganson’s work rotated at a steady speed of 200 rpm, while the last one would take 2.3 trillion years to turn – and was simply embedded in concrete for reliability.

Leading Gear Down For What? assembled a mechanism with a gear ratio of 3616238492881:1. Even a long rotation with an electric drill does not allow one iota to move the last wheel.


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