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natdad · 22 January 2024, 02:23 PM

My Daytona had been keeping time perfectly (4 years old). Has been serviced once for stopping suddenly but fixed under warranty less than 2 years ago. Now all of a sudden it is super fast. Like 1-2 hours a day fast. I don’t think it has been magnetized but can you think of what the problem might be? I imagine it will have to be sent in again, but that seems like a lot of service needed for a relatively new watch. My gmt has almost never needed service and it’s 15 years old.

kilyung · 22 January 2024, 03:24 PM

Sounds like a return trip is in order

saxo3 · 22 January 2024, 04:42 PM

First, I would test the movement (after full winding) with my timegrapher. Then let it run to the end of its power reserve, fully wind, and measure again. Interesting to measure if your watch is running so fast in all positions.

77T · 22 January 2024, 10:18 PM

Quote:

Originally Posted by natdad

Now all of a sudden it is super fast. Like 1-2 hours a day fast. I don’t think it has been magnetized but can you think of what the problem might be?

classic definition of a magnetized movement.

get it demagnetized and then observe its accuracy.

if that doesn’t return it to normalcy, send to RSC as it has another year on warranty.

Sent from my iPhone using Tapatalk Pro

padi56 · 22 January 2024, 10:35 PM

Well if magnetised which is quite doubtful in general they do speed up and run very very erratic or even stop and refuse to start. In most cases its the hairspring thats effected but seeing the Daytona was the first watch to have parachrom hairspring fitted way back in 2000 and according to Rolex its non-magnetic. So possible owner error in checking time try giving your watch a full manual wind set time with reliable source quartz kitchen clock will do. Check time after a few hours see if Daytona is keeping time ,if not then it best a trip to RSC to get it fixed.

Chiboy · 22 January 2024, 11:36 PM

I'm having a hard time envisioning gaining an hour or two per day being user error, lol.

I have a similar but different issue. My Daytona, which was spot on time-wise for over a year, began losing a bit of time and now is losing about half a minute per day. It's eight years old and I just shipped it off to Dallas RSC for service last week.

illiguy · 22 January 2024, 11:49 PM

Sounds like magnetization.

Calatrava r · 23 January 2024, 12:05 AM

Place the watch next to a stable stopped compass. If the needle moves, the watch is magnetized. Magnetism could be an explanation of your issue.

brandrea · 23 January 2024, 12:18 AM

Quote:

Originally Posted by Calatrava r

Place the watch next to a stable stopped compass. If the needle moves, the watch is magnetized. Magnetism could be an explanation of your issue.

Interesting… I’ve never heard of this before. Learned something new today

Kap007 · 23 January 2024, 12:28 AM

What does the GMT , almost never needing a service in 15 years mean?

22 January 2024, 02:23 PM	#1
natdad "TRF" Member Join Date: Mar 2020 Location: US Posts: 4	Daytona 116500 suddenly super fast My Daytona had been keeping time perfectly (4 years old). Has been serviced once for stopping suddenly but fixed under warranty less than 2 years ago. Now all of a sudden it is super fast. Like 1-2 hours a day fast. I don’t think it has been magnetized but can you think of what the problem might be? I imagine it will have to be sent in again, but that seems like a lot of service needed for a relatively new watch. My gmt has almost never needed service and it’s 15 years old.

22 January 2024, 04:42 PM	#3
saxo3 "TRF" Member Join Date: Dec 2020 Location: . Posts: 2,909	Daytona 116500 suddenly super fast First, I would test the movement (after full winding) with my timegrapher. Then let it run to the end of its power reserve, fully wind, and measure again. Interesting to measure if your watch is running so fast in all positions.

22 January 2024, 10:35 PM	#5
padi56 "TRF" Life Patron Join Date: Jun 2005 Real Name: Peter Location: Llanfairpwllgwyng Watch: ing you. Posts: 53,041	Well if magnetised which is quite doubtful in general they do speed up and run very very erratic or even stop and refuse to start. In most cases its the hairspring thats effected but seeing the Daytona was the first watch to have parachrom hairspring fitted way back in 2000 and according to Rolex its non-magnetic. So possible owner error in checking time try giving your watch a full manual wind set time with reliable source quartz kitchen clock will do. Check time after a few hours see if Daytona is keeping time ,if not then it best a trip to RSC to get it fixed. __________________ 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

22 January 2024, 11:36 PM	#6
Chiboy "TRF" Member Join Date: Aug 2016 Location: Chicago Watch: Daytona Posts: 5,567	I'm having a hard time envisioning gaining an hour or two per day being user error, lol. I have a similar but different issue. My Daytona, which was spot on time-wise for over a year, began losing a bit of time and now is losing about half a minute per day. It's eight years old and I just shipped it off to Dallas RSC for service last week. __________________ Datejust w/black Tapestry dial (1985) / Daytona (2016)

22 January 2024, 03:24 PM	#2
kilyung 2024 SubLV41 Pledge Member Join Date: Jul 2009 Location: Cave Watch: Sundial Posts: 33,940	Sounds like a return trip is in order

22 January 2024, 11:49 PM	#7
illiguy 2024 SubLV41 Pledge Member Join Date: Dec 2013 Location: UTC/GMT -5 Posts: 3,661	Sounds like magnetization.

23 January 2024, 12:05 AM	#8
Calatrava r 2024 SubLV41 Pledge Member Join Date: Mar 2017 Location: United States Watch: Rolex and Patek Posts: 11,364	Place the watch next to a stable stopped compass. If the needle moves, the watch is magnetized. Magnetism could be an explanation of your issue.

23 January 2024, 12:28 AM	#10
Kap007 "TRF" Member Join Date: Jan 2021 Location: Philadelphia Watch: 116900 Posts: 322	What does the GMT , almost never needing a service in 15 years mean?

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