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24 February 2020, 11:40 PM | #1 |
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Shaking watch adds seconds
Here's an observation followed by a question. I have a sky dweller with the new 9001 movement. It consistently loses about 2 seconds per day. Very reasonable. I tried laying it in different positions overnight and nothing really seems to effect that number. It's very steady and consistent.
However, I discovered that if I shake my wrist vigorously it adds seconds. After some testing I've learned that I can pretty consistently gain back those 2 seconds real quickly if I shake my wrist for about 20 seconds. I shake it in the direction of 12/6. Kind of like when you're pounding your fist on a table or hammeringa nail, which is how I made this discovery, but you don't need to pound it on anything just shake it back-and-forth in the air. So here is the question, does anybody have any insight to what that might do long term to the movement? I mean it doesn't sound great to shake your watch vigorously like that. But of course these watches are made to take a lot. Maybe it doesn't matter. And if so it's a great way to self regulate my watch. Thoughts? Experienced insights? Thanks in advance. Mike Sent from my SM-G965U using Tapatalk |
24 February 2020, 11:53 PM | #2 |
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You are interrupting the hairspring, causing it to vibrate and keep time erratically.
The hairspring is only capable of delivering precision when the spring is flat and the coils concentric. |
25 February 2020, 12:24 AM | #3 | |
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25 February 2020, 02:21 AM | #4 | |
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25 February 2020, 02:31 AM | #5 | |
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That being said, extra stress is extra stress. If 99.99% are fine, that would still result in failure for every 1 in 10,000 watches - not exactly a remote chance. (And there is no realistic way their failure rate is only 0.01% either, was intended as hyperbole) I wouldn't worry about it though, just don't go strapping your watch to a paint mixer at home depot. |
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25 February 2020, 02:56 AM | #6 | |
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I like to keep my watches within a minute of accurate. Call me weird but I've always been that way. I reset my Grandfathers clock every Sunday when I wind it. But that's worse, when it is not accurate it is reminding you every hour of that fact. The way I figure it this is not a puppy. So if shaking it won't kill it then I might just do that to keep it close to accurate even if it means sending it in for service in 5 years instead of 7. Thanks for your thoughts. |
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25 February 2020, 03:15 AM | #7 |
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Shaking watch adds seconds
Any item made of materials meant to oscillate has some version of a MTBF. What you’re doing will not put your hairspring on the Eastside of that timeline.
Ultimately it’s your watch - maybe try to work on that OCD you have I am just ribbing you, of course. I, too, have a weight-driven grandfather clock that I crank every week along with 4 other spring-driven pendulum clocks. Each varies a bit but I stopped using my Rolex to adjust them weekly. That’s because they are keeping better time than the DJ. I can regulate the pendulums very well, and they don’t have me shaking them. Sent from my iPhone using Tapatalk Pro
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25 February 2020, 04:04 AM | #8 |
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Space Mountain and the Matterhorn will also add seconds, and it's a whole lot more fun.
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25 February 2020, 04:34 AM | #9 | |
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Haha, yea I'm actually not that bad. Normally I'm not compelled to pop the crown and adjust the time until it's a couple minutes off. But an easy shake every morning might be hard to resist my mild OCD. Sent from my SM-G965U using Tapatalk |
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25 February 2020, 04:50 AM | #10 |
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Store the watch dial up position when not worn. This may cause a very slow gain in time over days or weeks. There is the least amount of friction on the pivots with dial up.
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25 February 2020, 05:57 AM | #11 | |
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25 February 2020, 12:12 PM | #12 |
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You are interrupting the balance spring, but that isn’t the reason that the watch gains time. The reason the watch gains time is that you are causing it to over bank. Basically, the roller jewel is being moved past it’s safe point and is hitting the back of the pallet horns. In effect, you are raising the amplitude of the balance to over 360 degrees. It’s the same as putting a mainspring in that is too strong, it will cause the watch to gain time very quickly. It’s possible, if you spin it enough, that the balance spring could get caught up on itself. I have seen that happen.
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25 February 2020, 12:14 PM | #13 |
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Also, I don’t know where this myth that a watch will gain time if stored dial up comes form, but it’s utter rubbish. If a watch is set to gain time in that position, then yes it will. If it’s not, then it won’t. This is not a rule.
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25 February 2020, 12:20 PM | #14 | |
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25 February 2020, 07:43 PM | #15 | |
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If a sufficient external force acts on the balance spring it will vibrate outside of it’s predetermined frequency. If the movement is geared for a 4hz balance and the balance temporarily vibrates at higher frequency, the watch will gain. Completely agree here |
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25 February 2020, 10:11 PM | #16 | |
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Regardless, thanks again for the education Sent from my SM-G965U using Tapatalk |
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25 February 2020, 11:54 PM | #17 | |
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What we were referring to and disputing is the oft touted nugget of wisdom that “leaving a watch dial up will make it gain”. It depends entirely on how the watch has been regulated, so it not a one size fits all solution. However, changing watch resting positions absolutely does produce different timekeeping results. |
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26 February 2020, 12:27 AM | #18 |
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Gotcha. Based on simple observation that jives with what I see
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28 February 2020, 06:10 PM | #19 |
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Rolex used to send this out with every watch - it certainly works with my Sky Dweller.
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28 February 2020, 09:11 PM | #20 |
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Why some worry and fret over one or two seconds out of 86400 in a day defeats me.
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ICom Pro3 All posts are my own opinion and my opinion only. "The clock of life is wound but once, and no man has the power to tell just when the hands will stop. Now is the only time you actually own the time, Place no faith in time, for the clock may soon be still for ever." Good Judgement comes from experience,experience comes from Bad Judgement,.Buy quality, cry once; buy cheap, cry again and again. www.mc0yad.club Second in command CEO and left handed watch winder |
28 February 2020, 09:48 PM | #21 | |
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28 February 2020, 09:59 PM | #22 | |
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28 February 2020, 10:00 PM | #23 | |
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I hear that. My Daytona is +2.5 to +3 no matter the angle. I can't get it to lose any time so there is no hope of regulating over long periods like I did with GMT, sub, SD43, DJ41 etc which all gained dial up and lost crown up.
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28 February 2020, 11:54 PM | #24 | |
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29 February 2020, 07:20 PM | #25 | |
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It's interesting that your Sky Dweller doesn't respond to self regulating as mine so clearly does. You'd think they'd be the same. |
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29 February 2020, 08:46 PM | #26 | |
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29 February 2020, 09:37 PM | #27 | |
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ICom Pro3 All posts are my own opinion and my opinion only. "The clock of life is wound but once, and no man has the power to tell just when the hands will stop. Now is the only time you actually own the time, Place no faith in time, for the clock may soon be still for ever." Good Judgement comes from experience,experience comes from Bad Judgement,.Buy quality, cry once; buy cheap, cry again and again. www.mc0yad.club Second in command CEO and left handed watch winder |
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29 February 2020, 09:46 PM | #28 | |
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Mike |
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29 February 2020, 09:57 PM | #29 | |
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Hey Peter...you’re cutting into watchmaker revenue stream...the more they shake & break, they more repair work for watchmakers! Sent from my iPhone using Tapatalk Pro
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29 February 2020, 10:36 PM | #30 | |
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And then there’s the “I didn’t break it! It was working when I took it off when I went to bed, and when I woke up it was like this....” people. Lots of them keep us busy. |
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