Hi Mike,
You would need to trim the rod itself but not the spring to the correct length.
Lacking an old one to take measurements from usually entails a trial and error approach for me. It’s my understanding that the number 5 1/4 stamped on your plate might indicate the pendulum drop length but I’ve never been able to figure out how that number is applied in the real world when it comes to determining the actual length of the rod. So I just cut and bend the hook so the pendulum bob just clears the bottom of the case and then check the rate. If needed I then begin trimming the length and re-bending the hook until it falls into the correct rate.
Sounds more difficult than it actually is. The whole process doesn’t take much time at all for me.
Bob has an ebook download with directions on how to make the bend correctly. We have it in our download section for the Course or you can just download the pdf fileĀ (should open in a new tab) Here
Hope this helps Mike!!
Best, Dean
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This reply was modified 3 years ago by
drichards.