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Old 25 May 2019, 02:25 PM   #1
stainlesssteve
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Daytona C loses time when running the Chronograph

Just noticed that my normally precise 116500 is now losing serious time whenever I run the Chronograph.

When running the Chronograph the watch is off by almost 45 minutes in less than 12 hours. But, when I stop the Chronograph, the watch keeps perfect time (within 1 second after 24 hours). Not sure what is going on but a trip to the RSC seems to be in my future. Curious if anyone else has observed this problem with any Daytona?

Worth noting that this watch was one of the very first delivered. Its been in regular use, on my wrist or on the winder, for almost 3 years now. Disappointed that it needs service already...

Steve
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Old 25 May 2019, 02:52 PM   #2
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I had a similar problem with mine. Just got it back from RSC and works great.
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Old 25 May 2019, 02:54 PM   #3
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I had a similar problem with mine. Just got it back from RSC and works great.
Any idea what the technical glitch was? I’d be interested to know.
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Old 25 May 2019, 06:39 PM   #4
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Mmmm interesting (not in a positief way). I have both black and white, need to check them.
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Old 25 May 2019, 10:11 PM   #5
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Quote:
Originally Posted by stainlesssteve View Post
Just noticed that my normally precise 116500 is now losing serious time whenever I run the Chronograph.

When running the Chronograph the watch is off by almost 45 minutes in less than 12 hours. But, when I stop the Chronograph, the watch keeps perfect time (within 1 second after 24 hours). Not sure what is going on but a trip to the RSC seems to be in my future. Curious if anyone else has observed this problem with any Daytona?

Worth noting that this watch was one of the very first delivered. Its been in regular use, on my wrist or on the winder, for almost 3 years now. Disappointed that it needs service already...

Steve
Seems a trip to RSC is needed. When I had a Daytona I checked with Rolex if running the Chronograph 24/7 would impact on accuracy or power reserve. Rolex confirmed, at most it would reduce the power reserve marginally, there would be no consequential knock on effect to accuracy.

But a service might be required at 7 years rather than 10, if the watch started to show signs of erratic behaviour in its timekeeping.
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Old 26 May 2019, 12:49 AM   #6
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Thanks all... Will be sending it in next week
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Old 26 May 2019, 12:55 AM   #7
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I look forward to having this problem!


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Old 26 May 2019, 01:37 AM   #8
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It is very possible that the intermediate minute counter pinion is the culprit. They can occasionally become sticky and get a little gummed up. That is a pinion that is only engaged when the chronograph is running.

As the chronograph seconds hand gets to 59 seconds it engages that pinion to advance the chronograph minute hand forward by one.

Due to it being sticky it struggles to force it forward and gets stuck. Then it eventually moves forward one but has lost time.

IMG_2845-768x719.jpg
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Old 26 May 2019, 01:40 AM   #9
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Originally Posted by Ashton_Horologist View Post
It is very possible that the intermediate minute counter pinion is the culprit. They can occasionally become sticky and get a little gummed up. That is a pinion that is only engaged when the chronograph is running.

As the chronograph seconds hand gets to 59 seconds it engages that pinion to advance the chronograph minute hand forward by one.

Due to it being sticky it struggles to force it forward and gets stuck. Then it eventually moves forward one but has lost time.

Attachment 1044222
Is it true that Rolex has taken a minimalist approach to oiling movements now? Seems to be instances with new watches not running properly and needing to be oiled.
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Old 26 May 2019, 01:43 AM   #10
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Winders cause wear and tear. Unless you wear it every third day I don’t understand the need for one.

Sounds like it needs a service after all that.

What do you time for 12 hours?


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Old 26 May 2019, 01:43 AM   #11
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No, not a minimalist approach. I do wonder where these ideas come from. In fact, the minute pinion runs lubricant free. You have to remember, your watch is required to work constantly for 5-10 years straight. There is only so much room for lubricant...
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Old 26 May 2019, 01:44 AM   #12
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Rolex would never admit if it was a problem.
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Old 26 May 2019, 01:46 AM   #13
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Rolex admit problems all the time. I would also like to point out that people should not be disappointed if their watches need to go back under warranty. It is a part of life. Disappointment should set in If the warranty is not honored. If warranties weren’t needed, they wouldn’t be offered. And then subsequently increased.
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Old 26 May 2019, 02:03 AM   #14
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Rolex admit problems all the time. I would also like to point out that people should not be disappointed if their watches need to go back under warranty. It is a part of life. Disappointment should set in If the warranty is not honored. If warranties weren’t needed, they wouldn’t be offered. And then subsequently increased.
I agree with this wholeheartedly.

The only meaningful measure of the quality of a brand is what they do when things go wrong. Not how much they proclaim ‘things will never go wrong’
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Old 26 May 2019, 03:15 AM   #15
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My Daytona would sometimes "stutter" if the chrono was running around the 60 second mark. It might pause. So when running the chrono, the watch became very slow. I took it into RSC and they said it needed lubrication and gave it a full service. Runs fine now. Watch was gone for 12 days from drop off (I happened to be in L.A.) to receipt of Fedex.
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Old 26 May 2019, 03:25 AM   #16
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Quote:
Originally Posted by Ashton_Horologist View Post
Rolex admit problems all the time. I would also like to point out that people should not be disappointed if their watches need to go back under warranty. It is a part of life. Disappointment should set in If the warranty is not honored. If warranties weren’t needed, they wouldn’t be offered. And then subsequently increased.
This is a very accurate assessment. This fantasy that every Rolex is an absolutely perfect example is erroneous. The mere fact that they are mechanical watches means that perfection is an impossibility. Are their engineering tolerances good? Yes. Is quality control excellent? Yes. Can every part always leave the production line with a perfect amalgam of metal and tolerance? No. There will always be fluctuations in anything mechanical and, due to chain reactions, a faltering part will affect those parts around it that were previously perfect. Send the watch to RSC, you got the 1 in x’000 that isn’t or wasn’t perfect and, something within failed over time. For every one that does fail there are x,000 that don’t. In the world of mechanics thats good going, especially since mechanics is always a scenario where failure is eventually imminent.
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Old 26 May 2019, 03:46 AM   #17
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Quote:
Originally Posted by stainlesssteve View Post
Just noticed that my normally precise 116500 is now losing serious time whenever I run the Chronograph.

When running the Chronograph the watch is off by almost 45 minutes in less than 12 hours. But, when I stop the Chronograph, the watch keeps perfect time (within 1 second after 24 hours). Not sure what is going on but a trip to the RSC seems to be in my future. Curious if anyone else has observed this problem with any Daytona?

Worth noting that this watch was one of the very first delivered. Its been in regular use, on my wrist or on the winder, for almost 3 years now. Disappointed that it needs service already...

Steve
This happened to one of my older daytonas, I was given a service (under warranty) and all was good.
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Old 26 May 2019, 04:53 AM   #18
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I had a similar problem with my older Daytona. Took a couple of times in service to correct, to this day, it runs very slow, it’s a 1997 Daytona
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Old 26 May 2019, 12:39 PM   #19
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RSC will get you sorted out. Glad that you wear it though. It’s sad that I was surprised to see a Daytona thread that addresses functionality...


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Old 26 May 2019, 12:53 PM   #20
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Originally Posted by Ashton_Horologist View Post
It is very possible that the intermediate minute counter pinion is the culprit. They can occasionally become sticky and get a little gummed up. That is a pinion that is only engaged when the chronograph is running.



As the chronograph seconds hand gets to 59 seconds it engages that pinion to advance the chronograph minute hand forward by one.



Due to it being sticky it struggles to force it forward and gets stuck. Then it eventually moves forward one but has lost time.



Attachment 1044222
Great post, thanks for sharing

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Old 26 May 2019, 12:58 PM   #21
stainlesssteve
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Winders cause wear and tear. Unless you wear it every third day I don’t understand the need for one.

Sounds like it needs a service after all that.

What do you time for 12 hours?


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Well, How about the 24 Hours of Daytona?
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Old 26 May 2019, 01:15 PM   #22
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Quote:
Originally Posted by Ashton_Horologist View Post
It is very possible that the intermediate minute counter pinion is the culprit. They can occasionally become sticky and get a little gummed up. That is a pinion that is only engaged when the chronograph is running.

As the chronograph seconds hand gets to 59 seconds it engages that pinion to advance the chronograph minute hand forward by one.

Due to it being sticky it struggles to force it forward and gets stuck. Then it eventually moves forward one but has lost time.

Attachment 1044222
Great info
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Old 26 May 2019, 01:29 PM   #23
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No, not a minimalist approach. I do wonder where these ideas come from. In fact, the minute pinion runs lubricant free. You have to remember, your watch is required to work constantly for 5-10 years straight. There is only so much room for lubricant...
I was told this by a well respected CW21 watchmaker. But he did not elaborate, so take it for what it's worth
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Old 26 May 2019, 04:48 PM   #24
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Well, How about the 24 Hours of Daytona?
I didn't know he raced in it. Apologies

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Old 26 May 2019, 09:25 PM   #25
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I was told this by a well respected CW21 watchmaker. But he did not elaborate, so take it for what it's worth
Sometimes people make mistakes; whether it is the person assembling the movement or the designers misjudged how much or what type of lubrication a new movement would require. Human error happens.

But generally speaking Rolex use a more liberal quantity of lubrication than other brands.
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