NOTE: Suspensions do not have to be exact in length, if the clock runs slow then raise the pendulum bob with the screw. Clock Pendulum Parts.
Clock pendulum parts consist of the pendulum itself, the leader that it attaches to, and then the suspension spring that the leader attaches to. So usually there are three components to a clock pendulum parts assembly. The pendulum, leader and suspension spring. The suspension spring is the thing that breaks and the leader in turn sometimes gets misplaced and in turn, lost. To get the proper replacement clock pendulum parts is not always easy, if you have the old parts it is much easier to match up. If the parts are lost then you may want to email us the movement numbers off of the back plate or even send a pic by email of the movement so we can help with identification and help replace the needed clock pendulum parts.
These top hooks are all for a wood stick style pendulum except the letter "I" and "J" units. For the most part you would have the wood stick in either 1/2 inch or 1 inch width and put this top hook on it by bending the tabs over as a friction fit. Then the pendulum is all set to be able to hook to the leader. Note: The pendulum assembly consists of the suspension spring on the top, then comes the leader, then comes the pendulum with its top hook attached. Clock Pendulum Parts.
To get the length of the leader on a German movement, get the CM number off the back plate of the movement. This measurement is the approximate length from the top of the movement to the bottom of the pendulum. So if you measure the pendulum tip to tip in inches and then add an inch for the suspension spring, the multiply times 2.54 it will give you the CM length of all but the leader. The remaining length from this measurement and the CM length from the back plate, will be the approximate leader length.
A = Works with top hook H and I and J / Suspension style A
B = Works with top hook D and E / Suspension style B
C = Works with top hook D and E / Suspension style A
D = Works with top hook B / Suspension style A
E = Works with top hook A / Suspension style A
F = Works with top hook B / Suspension style A
G = Works with top hook B / Suspension style A
H = Works with top hook B / Suspension style A
I = N/A
J = N/A
K = Works with top hook B / Suspension style A
We offer the above Clock Pendulum Parts bobs with various patterns. These are for mantle movements with the F-S regulator that you can adjust the timing.
Item # PD10
This pendulum bob is threaded on the bottom with a rating nut for easy timing of the clock. This can be used on mantle clocks as well as certain wall clocks such as a banjo. Measurement is the diameter of the bob.
Item # PD11
Gold tone brass pendulum with leaf decorations on the top of the pendulum bob. This pendulum measures seven inches in length and has a 2 1/2 inch diameter bob that weighs 3.5 ounces. Clock pendulum parts used with some modern wall clocks and 31 day clocks.
Bob is 35mm in diameter and weighs two ounces.