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  1. 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 …

  2. Compensated pendulums - NAWCC Forums

    Oct 4, 2007 · On a "simple pendulum" setup this would cause the pendulum's period of swing to lengthen (slow down). Mercury compensating pendulums contain one or more glass or metal …

  3. 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.

  4. identification/age of Ingraham Mantle clock... | NAWCC Forums

    Jul 25, 2005 · I was about to recommend the typical Ingraham mantel clock pendulum until I read the following - "The movement used is our heavy brass pendulum movement, which is well …

  5. Precision Pendulum Clock, Konrad Marwitz, Munich - NAWCC …

    Jun 1, 2025 · The pendulum is quite light, the cylinders are hollow and apparently were at some juncture filled with lead pellets, a few fell out when opening the cylinders. Interestingly, there …

  6. Escape wheel question - NAWCC Forums

    Jan 11, 2008 · Here's a question (or two) that have occurred to me as a result of stuff in another thread. The fewer teeth in an escape wheel, the more rotation (degrees) per tooth, right? You …

  7. 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 …

  8. Banjo Clock Erratic Time Issue - NAWCC Forums

    Feb 25, 2025 · Isochronism in a clock (where the interval of the pendulum making different arcs is the same) is affected by many things including the adjustment of the escapement. If you are …

  9. Seth Thomas Grandfather Clock Pendulum Suspension

    May 11, 2025 · I have a ST grandmother clock that needs a pendulum suspension. The original part was missing when I bought the clock that also had a broken suspension spring. The …

  10. Crutch adjustment - NAWCC Forums

    Sep 30, 2017 · If the pendulum won't hang straight, or wobbles, check and try to straighten the pendulum's suspension spring. If it's kinked, replace it. And pay close attention to where the …

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