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Can you repair a broken mainspring?

vext01

By vext01
in Watch Repairs Help & Advice

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vext01 Member

vext01

Posted
Posted (edited)

Hi folks,

I've been digging in my spares for a working mainspring for a Vostok 2414a movement, but all of the ones I have are broken.

On these springs there's a short piece of metal spot-welded (?) to the outermost section of the spring ribbon. I think this is to stop the spring excessively slipping. It seems common for this piece of metal to break off.

Is it possible to repair such a broken spring without new parts?

Thanks

Edited by vext01
FLwatchguy73 Super WRT Addict

FLwatchguy73

Posted
Posted
11 minutes ago, vext01 said:

Hi folks,

I've been digging in my spares for a working mainspring for a Vostok 2414a movement, but all of the ones I have are broken.

On these springs there's a short piece of metal spot-welded (?) to the outermost section of the spring ribbon. I think this is to stop the spring excessively slipping. It seems common for this piece of metal to break off.

Is it possible to repair such a broken spring without new parts?

Thanks

I've done this technique, it works great!

 

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vext01 Member

vext01

Posted
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Posted

Well, that seems to have worked. The movement now winds all the way up.

Now the true test: does it hold power long enough. With the slipping spring, I only got about 6 hours out of it.

Test underway...

vext01 Member

vext01

Posted
  • Author
Posted

The repaired mainspring held power for just over 33 hours :)

Great tip, thanks for sharing!

Quote

Get a new spring from meranom and be done.

That might have been my next course of action, but I wanted to see if I could repair it without buying new parts.

Things take so long to ship from Russia and I didn't want to spend money if I didn't have to.

Thanks!

  • 3 years later...
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