GrabCAD
South Pointing Chariot
by GrabCAD
Last crawled date: 1 year, 11 months ago
South Pointing Chariot.
A Chinese chariot with a figure mounted on top, forever pointing towards the south, irrespective of which way the chariot is heading. The 2 wheels drive a series of gears to drive a differential, which creates the movement of the figure relative to the chariot.
Actually not too accurate because of the need for the extreme dimensional accuracy of the gears and wheels but good for impressing the people on grand public occasions.
It was thought to have been developed first in 2600 BC, but the first historically confirmed version was created by Ma Jun around 200AD. Its secret was lost and reinvented many times through history but in 1947 George Lanchester designed a model that used a differential to drive the pointing figure. It is that design upon which this model is based.
The design uses a 1:1 ratio between the wheels and the differential and a wheelbase equal to the wheel diameter.
http://www.3dprinterclocks.com
A Chinese chariot with a figure mounted on top, forever pointing towards the south, irrespective of which way the chariot is heading. The 2 wheels drive a series of gears to drive a differential, which creates the movement of the figure relative to the chariot.
Actually not too accurate because of the need for the extreme dimensional accuracy of the gears and wheels but good for impressing the people on grand public occasions.
It was thought to have been developed first in 2600 BC, but the first historically confirmed version was created by Ma Jun around 200AD. Its secret was lost and reinvented many times through history but in 1947 George Lanchester designed a model that used a differential to drive the pointing figure. It is that design upon which this model is based.
The design uses a 1:1 ratio between the wheels and the differential and a wheelbase equal to the wheel diameter.
http://www.3dprinterclocks.com
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