Clock Key

How do you regulate fast or slow on a key wind pendulum clock?

This is one of the older regulator clocks, that runs for 28 days and then you rewind it. At least that is how I do it. But my problem is that the clock runs fast.

Pendulum clocks usually have a small nut (usually with ridges) right at the bottom of the pendulum. You use this to adjust the length of the pendulum. This adjusts the speed of the clock. Turn one way to slow it down and the other way to speed the clock up.

Grasp the nut in you right hand between your thumb and forefinger with the thumb in front. Turn to the left to slow the clock down and to the right to speed it up.

This is trial and error. Make small changes and wait for several hours to see the change. Sometimes it take days to get it right. I usually leave my adjustment with the clock running a little on the slow side because it is easier to correct the time by moving the minute hand forward than stopping a "fast" clock and waiting for time to catch up.

Big caution. DO NOT TRY TURN THE MINUTE HAND BACK, you'll cause real damage!!

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