Astro-skeleton, Movement in freewheel @MarkFrankclocks
Astro-skeleton, Movement in freewheel  @MarkFrankclocks
Uploaded October 2020 | Updated September 2026, 2 weeks ago
The movement freewheeling is achieved when pendulums, escapement pallets and all astronomical components are removed, all of the four main trains, time, celestial, quarter and hour trains are in freewheel. The time train at 24x normal speed, strike trains normal speed due to the fly governors; this difference puts the strike trains in near constant activity as they are being continually tripped by the speeding time train.
Astro-skeleton, Movement in freewheelAstro-skeleton, demo of the Jupiter and Saturn components of the orreryManual demo of length of day and night dials within the Sun / moon rise-set moduleJean Lepine, Paris, France, c. 1800Horizon shutter, sun and moon drive assemblyAstro-skeleton, Turning a large dial bezelAstro-skeleton, Finished Sun and Moon moduleAstro skeleton demo of clearence for strike train Fasoldt whips behind planisphere dialOrrery demo April 2019Astro-skeleton, engraving Saturns eccentric orbit dialDemonstration of Yale Model #1  w. auto off-guard let off, c. 1876BHI, February 2022 Zoom presentation, 2
Mark Frank |

Astro-skeleton, Movement in freewheel

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