Hello guys, so I have a Seamaster 600 and it has the cal 611.
It had an amplitude around 220. Otherwise these were the other values as shown in picture.

So my question, is 220 a bit low?

 

I posted a thread that might help you not Long ago.

 

Actually, Ling found your post very helpful as well.

 

170° is minimum according to Omega as contained in a document Michael posted in another thread.

 

Yes but after 24h and in vertical position, so not fully wound as I supose the test have been done.

 

I heard that 250 is supposed to be good

 

Yes, quite low in fact...

 

Should I do anything with it? What's to be done with it anyway? Need a new mainspring?

 

Elephant in the room...











...when was it last serviced?

 

Couple of months ago actually. They didn't swap any parts tho, because everything is so nice they said.

 

Who is "they"? Did "they" provide any evidence of the service?

 

Although not a watchmaker, I have had many serviced and even when I have been told that everything is within spec and running well, a mainspring, rear case seal and new crown (if crown seal is shot) is SOP.

 

"They" are two watchmakers that I go to with my pieces to have them checked and serviced.

Why? Do you think the watch seem like it would need another service?

 

iIf this is fully wound, I would suggest a new mainspring.

 

I'd generally expect a good watchmaker to not be happy with returning a watch with such low amplitude unless specifically requested by the owner.

 

If the amplitude is this low at full wind, then the service didn't address the issues that the movement most certainly has. It's standard practice to replace the mainspring at each service, and I can say with some confidence that if you only have 215 degrees of amplitude at full wind in a horizontal position, there's no way you will be above the minimum that Omega requires in vertical positions 24 hours after a full wind.

 

Is this cause for using the service guarantee and ask them to replace it, you think? And is a new mainspring ordered from Omega?

 

Likely yes and mainspring.

Tom

 

I know that changing the mainspring is a common practice during servicing but why is it mandatory especially when with the previous one you succeed to reach a good amplitude ?

Is it not a way for the watchmaker to be more confortable regarding the cleaning efficiency ?
We also know that some of them are using a stronger mainspring to compensate issues of the movement and reach a good amplitude.
Not a good practice but few doesn't care of such consideration.

 

Cheap insurance.

Tom