How do I make a grandfather clock go slower? It is running SLOW. I know the pendulum has to be adjusted but u?

Question

The pendulum has an adjustable screw on the lower end. Which way do I turn it to make the clock tick fasted? I am thinking lowering the pendulum so whick way is lower??

Answer 1

Increasing the Pendulum length will make it run slower.

Decreasing the length of the pendulum will make it run faster.

The simplistic equation is-:

Time Period = 2 * pi * (sqrt(length / gravitational field strength)

Answer 2

There is an adjustment screw at the bottom of the pendulum weight. You turn it to move the weight a small distance up the pendulum rod. BTW on a many old clocks, one complete turn (360 degrees) of the adjuster screw makes the clock speed up or slow down by one minute per day.

Answer 3

If the clock is running slow, you want to raise the pendulum. Usually this is accomplished by turning the adjustment screws clockwise. But models vary.

Is there an instruction book still in the case? Can you call the company where you bought the clock? Are there internet sites?

Answer 4

Make the pendulum longer (move the screw out) and the clock will run slower.

Answer 5

screws are usually right hand thread, so turn the screw clockwise to RAISE the pendulum if you want to speed up
the clock. Lowering the pendulum will slow the clock down.

Answer 6

the longer the pendulum the more time it wil take to go back and forth