ETA 2879 regulation...how to?

[ldegeneve]

No plus or minus sign, it's a little confusing! Any help greatly appreciated!

 

[GenTLe]

Similarly to many other movements, like many Miyota and clones, you have to deal with the 2 parts extending from balance bridge. The one where the hairspring ends is the hairspring terminator, and should be touched only to regulate the beat error. The other one where the hairspring pass through is the timing regulator.

Touch it only if you have a timegrapher: moving it like 1/10 mm you'll have the watch running faster or slower even 60/80 sec/day. So without a timegrapher it will be a damn nightmare to regulate it (and also with the machine isn't so easy: you must have an incredibly firm hand to move it but not to much).

Edited September 27, 2014 by GenTLe

[ldegeneve]

+1

 

For future reference...

 

 

 

[docdoowop]

hey guy.

I need to revive this thread as I need to know which lever is the one I push for a slight regulation.

The watch is running about 20 seconds fast per day

[hanski]

 

If you look under your loupe you can see it’s the one connected to the balance spring. 

[mymanmatt]

The lever with the brass piece is the speed lever. Push it away from the lever with the stainless piece. That will speed it up. You do know without a timegraph you are only guessing. Before you do your adjustment find a reference point so you can return the lever to it"s original spot. I do not recommend you do this without a machine or a kello app.at the very least. Sometimes the levers are so sensitive, you can't even see it move and it can make 30 seconds difference. Good luck

[docdoowop]

once you have made a ''push''/adjustment to fast or slow, do you wait 12 or 24 hours to see how it runs?

Sometimes a movement needs to settle from the adjustment?

or you can tell your adjustment is no good after only a few hours?