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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 internal moving parts …

  2. HOW A PENDULUM CLOCK WORKS - NAWCC Forums

    Jan 21, 2015 · The pendulum hangs from a flat suspension spring, and swings freely. But the rod or leader of the pendulum passes loosely through a loop in the end of the crutch.

  3. Pendulum fails to keep swinging - NAWCC Forums

    Jul 30, 2024 · Hi, I have a Kienzle Grandmother clock circa 1920. The problem I have is that once I start the pendulum swinging it will only work for around 5 minutes. Also there are three winding holes on …

  4. 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 5 oz. How does …

  5. Interpret pendulum length spec on movement - NAWCC Forums

    Jan 26, 2025 · To measure a Hermle pendulum length, you need to find the "CM" number stamped on the back of the clock movement, which represents the pendulum length in centimeters, measured …

  6. The action in which the escape wheel transfers energy into the pendulum by exerting force on the appropriate pallet face. For most designs, this is 2 degrees. If the pendulum is heavy, it will be …

  7. ALL ABOUT PENDULUMS | NAWCC Forums

    Jul 9, 2013 · A basic pendulum consists of a weighted bob, and a stick, hanging from some suspension point. The pendulum is the whole thing, because when we talk about "the mass (weight) of a …

  8. 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 and tock …

  9. fast/slow dial on mantel clock | NAWCC Forums

    Dec 15, 2012 · I am trying to get my Ingraham Adrian mantel clock that I got back from the clock repairman to keep accurate time. I have been adjusting the nut on the pendulum bob. I figure I will …

  10. 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 references. It will …