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Best method to flatten and "coned" hairspring

rduckwor

By rduckwor
in Watch Repairs Help & Advice

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yankeedog Distinguished Member

yankeedog

Posted
Posted

ooooh…..I hate that.it's bent….. you're going to have to remove it from the balance cock and see how and where. then you are going to have to correct it. hopefully  without damaging it further ,there are videos on this.its a very ticklish operation.

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BUSAKAZ WRT Addict

BUSAKAZ

Posted
Posted
Looks like someone got a bit ham-fisted with the balance and the hairspring is now "coned" rather than flat.  How do you deal with that issue?
 
Thanks,

RMD

Take the hair spring off the balance wheel and pull it in the opposite direction baby steps as you go.


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clockboy Distinguished Member

clockboy

Posted
Posted

As oldhippy states this is a difficult task and all have their issues. I have had a lot of success by removing the hairspring and then putting it on a balance tac and gently pushing down the HS it the raised area. I have found that very often it is the most inner part of the HS that has bent.

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Nucejoe Distinguished Member

Nucejoe

Posted
Posted

Best method to flatten a coned H/S is to replace it with a new one.

You work on coned h/s,  in five years time you can,t see the spring without a loup,

Within ten years you will need a loup to get in your car and within fifteen two loups to see your house.

 Joe

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