This is a subject that I usually use to see the “health” of the way the clocks is running after it’s repaired or even before so. I have found that most cuckoos have about 3” total swing. Some even more. I have also seen some with less. I like to see 3”, but I have some pretty foood running clocks that have 2 1/4 or 2.5”. Both happen to be older Hubert herrs maybe from the 70s. They run and keep excellent time. They do have decent overswing though. How does this amplitude really come into the health of one of these? Are they all the same? Exceptions to the rule? Just wondering. I’ve also seen people on YouTube repair these clocks and seem to have had similar things happen with less than 3” of total swing. I can usually tell this visually even on you tube by how far past the edges of the outer chains the bottom of the pendulum stick goes.