Urgos UW Lyre Style Clock Pendulum

September 19, 2018 11:37 am Published by Leave your thoughts

$145.00$175.00

Urgos Lyre pendulums are obsolete and no longer available new. We have for sale here a modified Hermle Lyre pendulum that will fit and function on a Urgos movement instead. We adjust the length and swap the top of the pendulum to fit your Urgos clock movement.

Please be sure to read the information below on how to get the proper Urgos clock pendulum.

Clear
UW Lyre Pend: $145.00$175.00

Urgos Lyre pendulums are obsolete and no longer available new. We have for sale here a modified Hermle Lyre pendulum that will fit and function on a Urgos movement instead. We adjust the length and swap the top of the pendulum to fit your Urgos clock movement.

Identification

Urgos clock movement identification

How to order

This movement series can be tricky to determine how long the pendulum is supposed to be. This is because they did not often stamp the CM number on the back plate of the movement. Instead we need to look it up by the number. Such as if it says UW32319 the chart will tell us that is an 80cm movement. This does not mean the pendulum itself will come 80cm as noted below. If the movement has an old number, it must first be converted to the new number, and that new number will give us the CM length. Wow, huh? If this is too much just email the numbers and we will tell you what pendulum you will need. To go at it on your own, here is the chart to figure out the CM length at this link and then come back here to continue ordering the pendulum.

Measuring note = The Germans measure there pendulum length from the TOP of the movement and all the way down to the very bottom of the pendulum rating nut threads. This could make things confusing for the customer and also this measurements varys drastically depending on the bob diameter. So the length can be tricky but lucky for you, you do not need to know all this. If your clock says something like 93cm, just choose 93cm from the list with your desired bob diameter, and we will take care of the length. The reason why this is explained here, is sometimes a customer gets the pendulum and measures it, and says "hey this pendulum does not measure 93cm and therefore it is wrong" but this is not the situation. A pendulum FOR a Urgos 93cm movement, does not mean you will get a 93cm long pendulum, it will be shorter.

Bob note = If you do not have a pendulum your replacing and its lost, we need to also figure out what bob diameter will swing around inside the case without hitting the sides. Usually people want the largest bob diameter they can get without it hitting the sides of the case. So how we figure this out is to measure how wide the inside of the clock is where the pendulum will swing. You now have some measurement like 14.5 inches or something, we deduct 4 inches from this number = 6 1/2 inches is the widest bob diameter you would want to get. You can get whatever is smaller, but dont go larger. For example you do not want a 8 1/2 inch bob because it will hit the sides, but you can use a 5 1/2 inch or 6 1/2 inch bob just fine.

Here are the steps to order the pendulum =

  • 1. Know your movement is made by Urgos by seeing above movement number examples.
  • 2. Get the CM numbers off of the back plate of the movement itself.
  • 3. Determine the bob diameter needed by measuring how wide the inside of the case is and then subtracting 4 inches.
  • 4. Decide if you want a Metal fancy Lyre style pendulum, or a Wood stick pendulum, or a brass rod pendulum if the option is there. They all come with a brass round bob at the bottom in the diameter you choose, but what it hangs on can be any of those mentioned (lyre, stick, brass rod.)
  • 5. Order it
  • When you get your pendulum you will need to put your clock in beat for it to run. This is very easy.

    Please note, the picture is of a Urgos Lyre pendulum for a 116cm movement with twisted rods. If the pendulum is for a 93cm or shorter movement CM it will have straight rods instead.

How to put a pendulum clock in beat

Every mechanical clock that has a pendulum needs to be in beat to function. Its part of owning the clock, is the learn this. If you do not know how to do this whenever you move the clock from here to there it will stop after 5 - 10 minutes. Putting the clock in beat is very easy.

How to put a German mechanical clock in BEAT ? (Post 1950)

This is done on Modern German clocks by pushing the pendulum all the way to one side (doesn’t matter right or left) to go beyond its resistance, and then letting it go. Now listen to see if the tick and the tock are evenly spaced. If it is stick going ticktock ticktock, or even tocktick tocktick then it is not in beat and will stop after 5min to an hour. Repeat the process above of pulling the pendulum all the way to one side and letting it go. The clock should have a nice, steady, rhythmic tick-tock, tick-tock with equal time lapsing between the tick and the tock and the next tick.

Sometimes when there is not much room to swing the pendulum in the clock case, as there is a big round pendulum bob and the case is not wide, you will need to adjust the beat in a different way. This is also true on some movements that the beat will not automatically set when swinging the pendulum wide. You would adjust the beat by pushing the top of the pendulum left or right as it hangs in its clock case, just hold a lower portion of the pendulum with your left hand as you push the top of the pendulum left or right with your right hand. You will feel the freedom in the pendulum to move left or right, with some resistance at the sides at the end of your left or right travel. You are changing the beat of the clock when you go beyond this resistance and therefore changing the place of the freedom area. Don’t be afraid to move this pendulum top as there is nothing to break as you go left or right beyond the resistance on the sides of the swing.

Bottom mount westminster clock chime block

Putting it in beat

Bottom mount westminster clock chime block

Your adjusting these

Bottom mount westminster clock chime block

Crutch being called anchor arm

Bottom mount westminster clock chime block

Leader being called suspension arm

Notes

The beat is the rhythmic pulsations of the escape wheel clicking over one tooth at a time, and this results in the sound tick / tock. What drives the pendulum is the escapement. They call it an escapement because its just letting the power of the gear train escape one tooth at a time. This make the sound tick and tock. That tick or tock sends a jumping pulse action to what is known as a crutch and that wacks the pendulum slightly each swing. The pendulums momentum back and forth, with being wacked by the crutch that comes down a little, just keeps it going and going. Provided its even left and right, in other words the tick and tock are even.

At this point, you have the movement in the clock with the dial off still. You have the movement running good. Now its time to make it chime and strike.

Additional information

Weight 5 lbs
Length

80cm, 93cm, 100cm, 110cm, 116cm

Bob Diameter

6 1/2 Inch, 8 1/2 Inch, 10 1/2 Inch

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