Most times this happens because the clock is not "in beat". Equal time between the TICK and the TOCK. Gently set the pendulum swinging. If a clock is out of beat, the pendulum will swing for a few minutes, then stop. To slow down the clock, loosen the adjustment nut (turn it toward your left). Dr. Time Presents: Putting Your Clock In BeatDave Dettmann a/k/a Dr. Time shows you how to put a clock in beat. If the clock is running fast, turn the pendulum nut counterclockwise to decrease the rate. A TOCK-TICK sound is out of beat. (Practical Clock Repairing, De Carle, p. 77) where T = seconds per beat p = a constant 3.141592654 L = pendulum length in metres g = gravity 9.81 m/s 2. The normal operation for any pendulum clock with the pendulum swinging is an evenly spaced sound. A clock is termed 'out of beat' if, when placed on a straight and level surface, the tick/tock is uneven ; it won't go at all or ; it will go but only if the clock is raised on one side. Move the nut up or down depending if it is slow or fast about a full turn for a minute a day. Most modern movements have a self adjusting verge. What if your clock only runs for ten minutes then stops? If your clock stops: Many times the problem with a pendulum clock that stops working is that the clock is out of beat. ADJUSTING MANUAL BEAT CLOCKS. The adjustment nut is a large nut at the bottom of the pendulum just below the large disk or weight called the bob. Pendulum clocks with a time adjustment nut (Grandfather clocks, most wall clocks, German mantel clocks, shelf clocks, etc.) Use the following rules to adjust the PENDULUM NUT; If the clock is running slow, turn the pendulum nut clockwise to increase the rate. In order to get the wall clock in beat I would hang clock on the wall. Setting The Beat of the Pendulum Clock. The Grandfather clock pendulum adjustment is done by turning the nut at the bottom up to speed up the grandfather clock or down to slow the grandfather clock. If further adjustment is needed follow the instructions for ADJUSTING MANUAL BEAT CLOCKS. If a clock is out of beat, the pendulum will swing for a few minutes, then stop even if the clock case is level. 2. To determine if your clock is out of beat, start the pendulum swinging and carefully listen to the tick and tock. Some clocks will not run if grossly out of beat. Figure 1. In beat is the term given to a clock when the intervals between the 'ticks' and the 'tocks' are equally spaced. The pendulum needs to swing exactly equal distances from dead center to the left, as from dead center to the right. A clock is "in beat" when the time between each tick/tock cycle is evenly spaced. If the beat is irregular like: tick---tock-----tick-tock, an adjustment must be made or the clock will stop. = 2.72 beats per second = 0.368 seconds per beat ADJUSTING THE BEAT. Tilt clock to left or right to get an even beat remembering "tilt her til she ticks with pride (clock), then adjust the crutch towards the high side". Bend the crutch wire in … You don't have to be too precise on the current length; if you have a fairly close figure, then the needed change will be close too. 163 b.p.m. The pendulum to make it swing exactly equal distances from dead center to the left, as from dead center to the right. If your clock is ticking away but its a little slow or fast, use this calculator to determine how much to shortern or lengthen the pendulum. This means that you can very easily correct this issue. If you notice that the beat of the clock (the tick tock) is not even simply bring the pendulum over to one side of the case. 2) Look at the clock again exactly 24 hours later and see if it is fast or slow.