Hamilton 956 issue with balance wheel

[finiteguy]

Actually this is a follow on from my previous post. I recently acquired a Hamilton 16S model 956. It does run, but when the watch is turned stem side up, the ticking sounds erratic. All other positions sound okay. I removed the balance wheel and I don't see any broken or bent pivots. Anyone have any ideas what might be wrong?

[Timothy Davis]

Actually this is a follow on from my previous post. I recently acquired a Hamilton 16S model 956. It does run, but when the watch is turned stem side up, the ticking sounds erratic. All other positions sound okay. I removed the balance wheel and I don't see any broken or bent pivots. Anyone have any ideas what might be wrong?

Have you tried poisen the balance wheel also making sure its in the true round and flat

[finiteguy]

Haven't tried that. I don't have the training or equipment to do that. I know someone who does. Is poising the balance wheel an expensive and complicated repair?

[Timothy Davis]

[QUOTE=finiteguy;610449]Haven't tried that. I don't have the training or equipment to do that. I know someone who does. Is poising the balance wheel an expensive and complicated repair?[/QUOTE

also Check the balance jewel for cracks this can also cause erratic behavior as far as cost to have the poising and truing done I dont know I do all that myself as Im self taught its not really to hard and doesnt take to much time to do so I wouldnt think it wouldnt cost to much but not for sure

[finiteguy]

The rhythm of ticking is like a horse trotting. Very odd and you can also hear a distinct metallic sound....and I only get this with stem up vertical.

[terry hall]

roller jewel?

balance not 'on level' hitting a component?

hairspring hitting some other surface?

end shake?

worn pivot?

bent pivot?

out of beat?


you may need to also post to repair forum...
good luck.