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PostPosted: Thu Aug 20, 2009 8:45 pm 
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Hi Everyone!

I just purchased my first Breitling 3 weeks ago from an AD. It is the Blackbird with the brushed stainless steel...

Anyways, I was experimenting with the stopwatch last night and noticed that everytime I start the timer the second hand advances ever-so-slightly by about 1/4 of a minute. So it basically throws off the accuracy of the watch each time I use the stopwatch. Is this normal on the Blackbird??? I'd hate to think that there is something wrong with the watch since I just bought it. :lingsrock:


Thanks, Charles


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PostPosted: Thu Aug 20, 2009 10:06 pm 
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So, are you saying that the actual seconds hand in the sub-dial at 3:00 is jumping 15 seconds (you said 1/4 minute) every time you engage the chrono function?

Or, is the chrono seconds hand jumping 15 seconds upon engagement?

If it's either of these, you definitely have a problem that needs addressing.


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PostPosted: Fri Aug 21, 2009 2:09 am 
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Galactus wrote:
Hi Everyone!

I just purchased my first Breitling 3 weeks ago from an AD. It is the Blackbird with the brushed stainless steel...

Anyways, I was experimenting with the stopwatch last night and noticed that everytime I start the timer the second hand advances ever-so-slightly by about 1/4 of a minute. So it basically throws off the accuracy of the watch each time I use the stopwatch. Is this normal on the Blackbird??? I'd hate to think that there is something wrong with the watch since I just bought it. :lingsrock:


Thanks, Charles

It's normal. Loads of threads on this. Here's two from the last week -

viewtopic.php?f=12&t=11997

viewtopic.php?f=12&t=12281

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PostPosted: Fri Aug 21, 2009 4:00 am 
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If it is jumping 15 seconds, it has a problem. I wrote an explanation of the "jump" in another thread.

The slight movement of the minute hand or the seconds bit is not uncommon because of the design of the movement and how the chronograph is engaged. The amount of jump varies between movements and also varies in the same movement. However, the jump is slight to almost none.

If the seconds bit skips 1/4 revolution (15 seconds), I would suspect a problem with the depthing of the fourth wheel to the escape wheel, something that should never have gotten through testing. :wowzers

If the chronograph sweep hand is advancing 1/4 revolution, there is a problem in the chronograph train.

In either case it means a trip to the AD. :cry:

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PostPosted: Fri Aug 21, 2009 9:18 am 
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onewatchnut wrote:
If it is jumping 15 seconds, it has a problem. I wrote an explanation of the "jump" in another thread.

The slight movement of the minute hand or the seconds bit is not uncommon because of the design of the movement and how the chronograph is engaged. The amount of jump varies between movements and also varies in the same movement. However, the jump is slight to almost none.

If the seconds bit skips 1/4 revolution (15 seconds), I would suspect a problem with the depthing of the fourth wheel to the escape wheel, something that should never have gotten through testing. :wowzers

If the chronograph sweep hand is advancing 1/4 revolution, there is a problem in the chronograph train.

In either case it means a trip to the AD. :cry:

I think when the OP says a "1/4 of a minute" he's talking about a tiny movement equating to a quarter of a single minute division on the dial - i.e. the classic mechanical movement 'jump' that's been discussed ad inifinitum on here. I don't think he means an actual 1/4 of a minute (i.e. 15 seconds). He also says "ever so slightly" which would indicate to me that he's talking about the classic 'jump' : 15 seconds would not be ever so slight.

You never know, maybe he'll come back and clear this up for us.

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PostPosted: Fri Aug 21, 2009 10:14 am 
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I think you are correct. If it is the minute hand that is moving 1/4 minute, that is the slight jump that is normal. Of course the time is not affected, only the position of the minute hand that waits for the rest of the motion works to catch up. It's all in how you read it. :D

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PostPosted: Fri Aug 21, 2009 10:27 am 
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Thanks for all the responses...

Yes, it is the minute hand I am talking about that slightly jumps 'one notch' or 1/4 of a minute. My gut dropped a few feet when I saw this happen. I just spent a month's salary on this watch!!!

onewatchnut: So when you are saying that time is not affecting, does the minute not move then until the 'real time' catches up? I do I have to reset the time whenever the stop watch is used.

Thanks!!


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PostPosted: Fri Aug 21, 2009 10:39 am 
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Galactus wrote:
Thanks for all the responses...

Yes, it is the minute hand I am talking about that slightly jumps 'one notch' or 1/4 of a minute. My gut dropped a few feet when I saw this happen. I just spent a month's salary on this watch!!!

onewatchnut: So when you are saying that time is not affecting, does the minute not move then until the 'real time' catches up? I do I have to reset the time whenever the stop watch is used.

Thanks!!


You don't have to reset anything - the movement 'catches up' so the error only exists for a few seconds.


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PostPosted: Tue Aug 25, 2009 7:11 pm 
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Quote:
Thanks for all the responses...I just spent a month's salary on this watch!!!


It's OK - you'll probably enjoy the watch more than your job :)


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