Astro-skeleton, demo of the outer planets of Jupiter and Saturn in the orrery module @MarkFrankclocks
Astro-skeleton, demo of the outer planets of Jupiter and Saturn in the orrery module  @MarkFrankclocks
Uploaded July 2019 | Updated September 2026, 2 weeks ago
In this video the orbits of the moons around Jupiter and Saturn and the orbits of Jupiter and Saturn around the Sun are demonstrated as they move past each other. Note the large transfer wheels that nicely fill in the space between the planetary gearboxes and the central drive hub of the orrery. This design is in stark contrast to most other orrery designs that use a strait armature with a set of identical idler wheels to transfer the drive from the hub to the planetary gearboxes, leaving the planetary gearboxes to look like islands in an empty space between the outer planets of Jupiter and Saturn and the central planets of Mercury, Venus, Earth and Mars.
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Mark Frank |

Astro-skeleton, demo of the outer planets of Jupiter and Saturn in the orrery module

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