Moon Phase Movements? - NAWCC Forums
2016年10月20日 · I was at a talk recently where a clock was shown that had the moon phase ran on a train with something like 6 wheels to make it extremely accurate, it was a clock that also showed the equation of time, so was a very complicated thing with a cam follower, but at its heart was a standard high torque quartz movement.
Precise Lunar Moon Phase Clock Gear Math Design - NAWCC …
This train of 169*133/72*37 is far more accurate than any two stage clock or watch moon phase recorded to my knowledge. It is a 2- stage simplification of a 3 stage train described by E. Edwardes and quoted in this thread. Edwardes gives no source. L = 1/24 x 91*91*171/ 6*9*37 = 13*7x13*7x 19*9 / 3*8 * 6*9*37
Moon phase clock dial drive missing | NAWCC Forums
2022年6月21日 · I have a moon phase longcase clock where the moon dial does not rotate. .Further investigation shows the drive to the dial is missing. I am guessing that there was a wheel with a tab that rotates once every 12 hours to drive the 118 tooth moon phase wheel, and there is a threaded hole on the upper RHS of the plate that might have held it.
Moon phase dial - NAWCC Forums
2024年7月16日 · It would be at about a 7 o'clock angle if you could see through the dial (4 o'clock as seen from behind). If the indexing spring isn't aligned or engaged properly, the driving pin might miss the driven face of the ratchet on the edge of the moon dial. Moon dials can also sometimes tilt enough on their shafts that the driving pin can miss the ...
Howard Miller Clock Moon Phase Dial Repair | NAWCC Forums
2022年12月6日 · I have a howard miller grandfather clock with a Hermle 1161-853BS 114cm movement. The last pin on that last gear that moves the moon phase dial is broken. Any idea where I could find a replacement gear with that small pin on it? Thank you
moon phase clock - not dial. Help needed! | NAWCC Forums
2015年11月2日 · divider to the clock oscillator input of the clock. It would be 33.9453125, which is .085% off. 4.345MHz crystals are available. It isn't exact but it is closer than the typical 29.5 day used by most moon dials. I suspect close enough to last until the batteries need replacing. I need to find a quartz clock that needs a little modification. Dwight
Hamilton, 1980 moon phase dial need help | NAWCC Forums
2022年10月28日 · As the snail assembly moves, that pointed lobe pushes the lever on the rear of the dial. That lever ratchets the moon dial one notch on the large moon dial wheel. It is kept from bouncing back by the spring detent on the opposite side of the moon dial. This is very similar to the action on a Jauch movement moon dial on old Emperor clocks.
Moon phase clock movement - NAWCC Forums
2012年9月1日 · Moon phase dials are an "attachment" to the clock movement and have the necessary reduction gears to attempt to provide the 29 and fractional day increments to the moon dial rotation. The moon phase mathematics is not easily calculate in terms of simple gear teeth because it is a fractional formula thus moon dials are only a approximation and ...
Is it possible to add a moon phase to a grandfather clock? (Solar ...
2017年4月25日 · Would love to remove the Tempest Fugit and replace it with a lunar phase display. Monday, August 21, 2017. Total Solar Eclipse! The moon'shadow will enter the USA's west coast at Oregon and exit the east coast. But don't worry. If you miss this one, there will be another in 5946.
Moon Dial not working? - NAWCC Forums
2020年11月8日 · Hi - I just bought this grandfather clock and it appears the moon dial is not working. Not sure what or where to look but there is this wire that is loose - see picture that I think may be the problem. the movement is an Urgos UW32130.0. Any chance any one could tell me too what type of...