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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. 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 …

  3. 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 …

  4. Pendulum weight | NAWCC Forums

    Mar 10, 2005 · The equation giving the period of a rod pendulum is different from that of a theoretical pendulum. So, the period differs depending on the relative weights of the rod and …

  5. Pendulum stops after 10-15 minutes - NAWCC Forums

    Feb 20, 2019 · However, the pendulum does swing in a diagonal back to front motion rather than just side to side. If you’re looking at the clock face and start the pendulum by moving it to the …

  6. 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.

  7. 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 …

  8. 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 …

  9. Pendulum clock runs slowly with pendulum bob all the way up

    Jan 24, 2023 · Hermle Clock Pendulum Measuring The clock may be equipped with the wrong pendulum and the pendulum you have may be able to be modified to suit the clock movement. …

  10. Junghans mantel clock: pendulum suspension (?) spring replacement

    Jul 16, 2009 · One of my educational clocks is an early 20th century Junghans. This is a pendulum clock with a five tone strike mechanism. The pendulum suspension (assuming I …