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Power reserve problem eta 6497-2

Ryan73222

By Ryan73222
in Watch Repairs Help & Advice

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Ryan73222 New Member

Ryan73222

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Posted (edited)

Hi everyone I am having problems with a brand new eta 6497-2. First issue was that it was running slow so I adjusted and trying ti see how much futher adjustment is needed. In doing so I bumped the adjustors in the photo attached. 

 

I also noticed that the power reserve is running out faster then expected. Watch was fully wound and seemed to run out in about 22 hours when quoted reserve is 55hrs. Is there away to adjust the power reserve. Also is it because I bumped the pin in the attached photo or is it due to something else. 🤔  please let me know if there is a way to fix or if I should send back the movement. It was quite costly and arrived last week. Thank you 

20211202_080538.jpg

Edited by Ryan73222
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watchweasol Distinguished Member

watchweasol

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Hi  the (pin) you bumped is the regulator Lengthening the terminal coil makes the watch slow down shortening it makes the watch go faster, but what you also may have done inadvertently is to move the pinning point of the hairspring knocking it off beat. This can lead to the watch stopping prematurely,  If you have access to a timegrapher or other test software ie watch o scope, Tg. or the like check the watch for amplitude and beat error, beat error of 0,02 or close should be ok.

I am not too happy with the shape of the hairspring coils they look a little compressed at the side of the index. 

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JohnR725 Distinguished Member

JohnR725

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2 hours ago, watchweasol said:

Having checked all my sources I am unable to find a sheet for the ETA6492-2 .  Dr Ranfft does not list it  either.

Strangely enough you can find it on the ETA website.

5 hours ago, Ryan73222 said:

What is the part in the photo used to adjust ? 

Are you having a hairspring problem? It's hard to tell the picture but something just doesn't quite look right perhaps. Then I'm attaching an image which explains a little about system. What you have here is the Etachron system used by both the Swiss and Seiko as they both share patents on it.

ETA SEIKO Etachron.JPG

CT_6497-2_FDE_482448_13 31.05.2017.pdf

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Nucejoe Distinguished Member

Nucejoe

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Welcome to WRT forum.

I think your watch is undamaged.

Move the regulator arm away from stud, this will make oscilator run faster and  you will see a more concentric coil.

The coil is just pushed to the side, perhaps not damaged at all. 

In case you don't have a tg machine and not set up a watchtiming app !    download    " watch accuracy meter"  infeed the ticking into your samrt phone mic, it will show you beat error and daily rate, but not amplitude. 

Reduce or zero the beat error and regulate the daily rate. 

As weasol said an out of beat oscilator requires stronger impulse to run, as the fork delivers untimely impulse thereby reducing  its efficiency .

Regs 

 

 

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watchweasol Distinguished Member

watchweasol

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The  TMI picture supplied by JohnR725 explains it exactly and which is which if you follow that along with some form of timing machine be it smartphone app or timegrapher application on a PC to give you a graphic out put.   The one your arrow points to is the regulator and the other is the stud support.

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