A new balance, complete?

[Davey57]

I’ve got a nice old wristwatch that’s been lying waiting for a repair.  The movement is a CYMA 162, it’s got a broken balance staff.  I did think that at some point I should have ago at trying to replace a balance staff, I have a good staking set. But it seems that maybe this alone may not be enough to accomplish a good job. While browsing for other parts I came across a supplier who has, a balance, complete. That is how they describe it. What would that usually consist of? Just the wheel,  hairspring, cock included?  I can contact them after the weekend, but for £25 I might save myself some grief and just buy a new one.

[Nucejoe]

Balance complete is comprised of balance wheel plus hairspring installed and poised.

You just attach the cock.

In some cases the HS is not removable, no repair.

[Nucejoe]

Dave this is like you have a Phd and asking first grade question. Staking a staff in is much more advanced. You just order the balance complete and install it.

 

[StuartBaker104]

In theory this should be a drop in replacement, but...

1. Make sure you don’t get confused between shockproof and non shockproof variants... they have different balance staff lengths

2. I have bought supposed balances complete where the terminal curve on the hairspring wasn’t properly formed.

However, I would agree this is your best option

[Davey57]

Thanks fellas. I’ll get in touch with them after the weekend.