Regulating a Seiko ...
 

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[Closed] Regulating a Seiko 7S26C auto.

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Yes, I know a Casio F91-W costs £8 and has many uses other than keeping excellent time, however the slippery slope has been trodden on. I was losing about a minute, maybe two a day, so with a sharpened matchstick I have nudged the [url= http://forum.tz-uk.com/showthread.php?18261-Adjusting-Seiko-7S26 ]Correct Peg[/url] 1 mm to the +. I get the feeling this might take a few goes over the next week and the fun might turn to frustration.

I read that someone used Audacity to record the beats and every 6 should be dead on the 1 second. This would be quicker - but I am going to go the slow route.

The bar was a little stiff, but I was glad when it did move a tiny amount.

Anybody else done this?


 
Posted : 20/06/2015 5:39 am
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Have you tried sitting it with the crown in different positions over night, that can help regulate it.


 
Posted : 20/06/2015 6:53 am
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Nope - but I have worked out in one hour that 1mm causes a HUGE difference. Now no longer slow, but a second faster over an hour. So I will back it off a tiny tiny amount.
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The irony of using a 10 year old plus casio that has never missed a beat to improve the accuracy of a watch is not lost on me.


 
Posted : 20/06/2015 7:15 am
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Yeah, it's just trial and error. I have s Seiko 5 that now runs bang on, a divers that loses a bit over a few days and a vintage Sportmaster that loses about a minute a day. I need to get round to sorting those two...


 
Posted : 20/06/2015 8:15 am
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Regulating a watch can be very frustrating, but when it goes well very rewarding. I have a few that need doing including a couple of modded Seikos.
Nice watch, what's the lume like?


 
Posted : 20/06/2015 10:00 am
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[img] [/img]
Ok at night, but not amazing. Being colour-blind I find it's day colours very easy to read. Other watches less so.
PS I got redressed by Mrs Wally this morning, again, due to colour clashes 🙁


 
Posted : 20/06/2015 10:30 am
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There are various Android (and an I Phone) apps for regulating watches.


 
Posted : 20/06/2015 2:58 pm
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Did this with my SPORK when I first got it, which has the 4R-15 auto movement. It was gaining around a minute a week, so I gave it to a mate who's a goldsmith and does battery changes, etc, and who gave it a tweak, whereupon it lost a minute a week. He told me to get a case opening tool from Maplin and do it myself, when I asked him to have another go!
So I did: the amounts of movement of the adjuster are TINY! I had several goes, (be very, very careful with any 'O'-rings), and the last attempt it went too far so I nudged it back a tad and hoped for the best. Last winter, over a full six month October-March it gained one minute fifteen seconds; so far this year, from the clocks going forward, it's actually thirty seconds slow, checking against my phone clock, which I always do.


 
Posted : 20/06/2015 5:28 pm

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