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  1. Pendulum does not keep swinging - NAWCC Forums

    Jan 28, 2018 · Remember the clock movement powers the pendulum, the pendulum does not power the clock. The fact that the clock runs with the pendulum off indicates that all the …

  2. Hermle 451-050H runs briefly then stops - NAWCC Forums

    Dec 14, 2024 · The clock will run for about 20 cycles of the pendulum and then you can see the piece holding the pendulum will jump/stutter and it stops. I could only upload this short clip …

  3. Pendulum weight - NAWCC Forums

    May 28, 2021 · Is there a specification for the pendulum weight of mantel clocks? I can't find anything in a search of the forums. I've accumulated weights ranging from < 2 oz to more than …

  4. Beat Setting 101 - NAWCC Forums

    Nov 21, 2011 · The pendulum passes back and forth across the beat-center in its progression from tick to tock and back. The clock is in beat when the beat-center is perfectly vertical: tick …

  5. Catalog of 400 Day Torsion Clock Pendulums - NAWCC Forums

    Sep 6, 2021 · Latest update: Nov 3, 2025 This article is intended to provide a catalog of 400 day clock pendulums to fill in some of the omissions in the Horolovar Repair Guide and other …

  6. Clock runs too fast no matter what - NAWCC Forums

    Dec 29, 2017 · I have a 19th century French mantel clock with a Japy Freres movement. It always runs 4-8 minutes per hour too fast. I have tried long and short pendulum lengths, light and …

  7. E. Schmeckenbecher West Germany Wall Clock with H65

    Nov 22, 2024 · As the title says, I just picked up a E. Schmeckenbecher wall clock with chime from a local Goodwill and I am attempting to find info on the proper length pendulum and size …

  8. Pendulum for Howard Miller Clock - NAWCC Forums

    Jul 7, 2015 · A pendulum from a Korean movement might work, as they are adjustable, and usually are much lighter than similar looking pendulums for American and German clocks.

  9. Seth Thomas Speed Adjustment - NAWCC Forums

    Mar 11, 2016 · With short pendulum clocks without adjustable pendulum bobs, such as mantel types, the pendulum hangs from a suspension rod, and when these rods are installed, they …

  10. Verge adjustment question - NAWCC Forums

    Dec 3, 2007 · The simple pendulum theory assumes the connection between the center of gravity of the mass at the end of the pendulum (the bob) and its point of attachment (verge) to be rigid …