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Discussion Starter #1
Got a fairly new (couple months old) aqua terra 8900. It's been keeping great time. Just over .5 seconds a day gain. Until today. It was less than 2 seconds fast since I set it saturday for daylight saving ending. I actually checked it this morning from the nist site. I went walking (fast walking, getting old sucks!) and for some reason, checked it against my work computer and it was fast. So I compared it to NIST again and it had gained about 8 seconds in that 30 minute walk.

Has anyone else noticed this on their omega. I haven't. I had a seiko do this before, but never an omega. Other than that, this watch has been great and kept super time.
 

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Definitely not normal. My AT 8900 averages +1 per day no matter the position and during all activities I've ever done, including fast movements.
 

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Discussion Starter #3
That was my thoughts and experience as well. Until yesterday when it gained time walking. I've used it before in the same way and it's been fine. I'm going to be using it again for fast walking today so I'll check. It'll definitely be fast considering it's in the 20's today! I'll want to hurry more than when it was 60.

Thanks for the response. I'll check back later with today's results.
 

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Went for another fast walk. Faster than yesterday. The AT performed flawlessly. Don't know what to make of it. It didn't gain or loose anything. I'm happy about that. Makes me feel better. But what happened yesterday? The not knowing drives me nuts. But I guess it could be worse. If anyone has any idea about the gain yesterday, that would be great. Otherwise, not seeing it today.
 

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Went for another fast walk. Faster than yesterday. The AT performed flawlessly. Don't know what to make of it. It didn't gain or loose anything. I'm happy about that. Makes me feel better. But what happened yesterday? The not knowing drives me nuts. But I guess it could be worse. If anyone has any idea about the gain yesterday, that would be great. Otherwise, not seeing it today.
I would keep an eye on it to see if it gains time again, whether from your walking or from anything else. I had an IWC that was about +1 daily for months, and then after traveling to CO in the middle of winter, it suddenly sped up to +3/day for awhile. After about a month I noticed it going back to +1. Don't know what happened that caused that.
 

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be very careful about the reference time you're checking against. Your work PC could have had a network related time adjustment that updated it. Go to an atomic clock source.
 

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It can have too high of an amplitude causing the rapid swinging to trigger banking. My Blancpain had that.
 

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Have you tried walking slower? :think:
 

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I went walking (fast walking, getting old sucks!) and for some reason, checked it against my work computer and it was fast. So I compared it to NIST again and it had gained about 8 seconds in that 30 minute walk.
Before we consider there is something wrong with the watch.... is this you?

 

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Discussion Starter #10
Before we consider there is something wrong with the watch.... is this you?

Well, almost, but not quite! :)

Went again today and the watch gained 5 seconds in a 30 minute fast walk.I checked the time against NIST before I left and checked again with NIST when I got back. 5 seconds. This is a watch that has gained less than 1 second a day for the past two months. And still keeps great time except when fast walking all the sudden. I guess I relegated to not wearing it when walking or relenting to the fact that it's going to gain time when I walk. 2 of the last 3 days it's gained when I walked.

Am I stuck with my quartz watches or am I going to have to constantly reset the Omega? Kind of disheartening.
 

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Well, almost, but not quite! :)

Went again today and the watch gained 5 seconds in a 30 minute fast walk.I checked the time against NIST before I left and checked again with NIST when I got back. 5 seconds. This is a watch that has gained less than 1 second a day for the past two months. And still keeps great time except when fast walking all the sudden. I guess I relegated to not wearing it when walking or relenting to the fact that it's going to gain time when I walk. 2 of the last 3 days it's gained when I walked.

Am I stuck with my quartz watches or am I going to have to constantly reset the Omega? Kind of disheartening.
I was just thinking if your the Flash, we can't really blame the watch :p

In all seriousness; I don't know much about this topic but found this conversation:

https://www.rolexforums.com/archive/index.php/t-394334.html
 

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if that much gain is a verifiable constant, there's a problem,
no way around it.
you could do a marathon and still it wouldn't justify it running out of spec
 

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Discussion Starter #15
I was just thinking if your the Flash, we can't really blame the watch :p

In all seriousness; I don't know much about this topic but found this conversation:

https://www.rolexforums.com/archive/index.php/t-394334.html
Good link. That seems exactly what is happening here. Great timekeeping except when fast walking. I kind of agree that a $5500 watch should be able to handle a fast walk without gaining excess time in a 30 minute period. Kind of disappointing.
 

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This is a common occurrence on all mechanical watches. When your arm swings at just the right rate to overlap in frequency with the balance rate the watch will gain time. Bascily what happens is when the random swing of your arm just happens to align with the opposite direction of the balance rotation then the balance amplitude is momentarily cut minutely short, and the watch gains a split second. From a single swing of your arm it will never be enough to be measurable but over 30 mins of arm swings the effects accumulate into something meaningful.

The best analogy I can give is imagine waves on an ocean. They are all random but occasionally 2 waves line up just right so that they are added together and become one larger wave, or a wave and a trough meet up and the wave is cancelled.

This phenomenon can happen running, scrubbing dishes, swimming, etc. Usually the effect doesn’t add up to much but when you engage in one of these activities for 15, 30, or more minutes it becomes enough for the change in the rate of the watch to be noticed.

The most common occurrence for this rate change I have heard is when runners wear their mechanical watch jogging. Fast walking not as much but it certainly can happen.

I’m sure if you google “mechanical watch gains time when I run” there are tons of threads about it you can read that will offer a better explanation than my simpleton one.
 

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Got a fairly new (couple months old) aqua terra 8900. It's been keeping great time. Just over .5 seconds a day gain. Until today. It was less than 2 seconds fast since I set it saturday for daylight saving ending. I actually checked it this morning from the nist site. I went walking (fast walking, getting old sucks!) and for some reason, checked it against my work computer and it was fast. So I compared it to NIST again and it had gained about 8 seconds in that 30 minute walk.

Has anyone else noticed this on their omega. I haven't. I had a seiko do this before, but never an omega. Other than that, this watch has been great and kept super time.
you're not riding a bike or anything to cause tons of frequent vibrations or anythign are you?
 

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Discussion Starter #19
Just an update...after almost a week of working good, the watch gained 7 seconds on a 30 minute walk today. Nothing I can think of that I did different but nevertheless, it gained time again. Just aggravating.
 

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Just an update...after almost a week of working good, the watch gained 7 seconds on a 30 minute walk today. Nothing I can think of that I did different but nevertheless, it gained time again. Just aggravating.
like I posted before, that watch should clearly be in the shop by now.
explanations put forth for what is happening are, as far as I know, correct, but for a couple of seconds +/-, and on a rare occasion when all the stars line up to create that effect,
there's nothing to remotely justify that much deviation on a walk.
just my opinion, but I wouldn't waste any more time wondering.
 
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