Internet Horology Club 185
Kern Midget running slow

This topic can be found at:
https://ihc185.infopop.cc/eve/forums/a/tpc/f/9886029761/m/8163906997

July 17, 2025, 20:55
Daniel Causey
Kern Midget running slow
Hello, first post.
I am working on a Kern Midget. I went to the Horolover book for the spring size. I found it on Page 84, Plate 1217C. It calls for a .0020" (.051MM) spring.
I have it set up with that spring, and it runs very fast. The pendulum has a very short adjustment, which was all the way up to try to make it run faster. It lost more than an hour in about 4 hours.
Does anyone know if that information is in error and what size spring I should use?
Thanks for any advice. Danny


Daniel Causey
July 18, 2025, 14:40
Daniel Causey
quote:
fast

I meant to say slow here, the clock is running slow.


Daniel Causey
July 18, 2025, 14:42
Daniel Causey
I think I am going to shorten the spring. I see that the bottom cup is adjustable in height. Thanks, Danny


Daniel Causey
July 18, 2025, 19:16
Daniel Causey
As I was shorting the spring, I realized that is not how a torsion clock works. I'm going to try a thicker spring. Thanks, Danny


Daniel Causey