Balance wheel issue

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Balance wheel issue

New postby Mikie_T » Fri Jul 14, 2017 7:54 pm

Hello all,

Tell me what you think could be my problem.....

This movement works great and keeps good time if the movement lays dial up.
Works great with stem up, stem 90 degrees, stem 180 degrees and stem 270 degrees. (all 4 vertical positions)
BUT......
When I lay the movement dial down..... the balance wheel slows and stops almost immediately.

SO.... what do you think my problem could be?
I haven't broken the movement apart for cleaning yet. Just asking where you think I should look first.

Mike
:?:
Mike Turner

Elgin National Watch Company, Elgin, Illinois.... Founded 1864. Makers of Pocket Watches, Wrist Watches, Bomb Sights and Precision Instruments.
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Re: Balance wheel issue

New postby Stephan » Sat Jul 15, 2017 1:53 am

Check how much end movement there is.
It might be just enough to let the balance move sideways a bit till something touches in that position.
Put it back the other way and it moves back and all is free again.

Could be the balance touching.
Could be the hairspring.
Could be the thicker part of the staff touching the throat of the jewel or the jewel mounting.

I can think of a few others as well but this would be a good start.
Learning all the time.
Stephan Gaal

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Re: Balance wheel issue

New postby richiec » Sat Jul 15, 2017 5:41 pm

Best guess is bad staff or cracked jewel.
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Re: Balance wheel issue

New postby Mikie_T » Mon Jul 17, 2017 12:08 pm

Thanks for the suggestions.
I will try to concentrate specifically on the areas you have suggested to see if I can find the issue.

Mike
Mike Turner

Elgin National Watch Company, Elgin, Illinois.... Founded 1864. Makers of Pocket Watches, Wrist Watches, Bomb Sights and Precision Instruments.
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