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bloke1 · 2 July 2018, 02:07 AM

I've got this 6694 circa 73' with caliber 1225.

I noticed that the date actually start changing gradually around 11.20++ and ticks into place around 12.00.

Is this normal? I thought all Rolexes are supposed to change instantly at 12midnight.

Floorguy · 2 July 2018, 11:58 PM

Mine changes at midnight! Might need a service, or just a cleaning! Mine is from 65’

Vlad · 3 July 2018, 01:40 AM

Take the caseback off, pull the stem, remove the movement, pull the hands, remove the dial. Date change mechanism is right there. adjust the springs, put it back together. If you never have done this before - take it to your favorite watch maker.

R.W.T. · 4 July 2018, 11:45 AM

It's not a quick change date like a later date just. I don't mean quickset, I mean quick change. It doesn't have the same mechanism, so you won't see it "snap" like you do with a calendar wheel with a cam and spring yoke and jewel. It's a completely different kind of operation. What you are describing is normal for 1215

1225 calibres.

On this watch, the calendar wheel has a pawl pin that comes around once in 24 hours and engages one of the sharp teeth on the "date star" on the underside of the date disc. Opposite of that the jumper spring will snap and hold it in place once the pawl has pulled it into place. You see the disc begin to move as the pawl enters

the teeth on the star wheel and progress forward as it slowly turns.

The early calendars work this way. Early 7xx series up to 1035. 11xx series also.

You get the snapping calendar beginning in the 1065 and 1066 and then of course in the 15xx movements on up in the full size. Those use the open calendar disc without the "star wheel" and use a calendar wheel that uses a snapping cam and spring yoke that push the date disc a much further distance utilizing much larger

"teeth" or gaps really on the date disc, right at midnight and the more powerful jumper spring helps that operation and secures the number in the proper place in the date window.

bloke1 · 8 July 2018, 06:44 PM

Thanks R.W.T.

You are right. I've seen some videos on youtube on setting the date and they all seem to behave like that. No date snapping.

2 July 2018, 02:07 AM	#1
bloke1 "TRF" Member Join Date: Jul 2018 Location: MALAYSIA Posts: 2	6694 Slow Date Change I've got this 6694 circa 73' with caliber 1225. I noticed that the date actually start changing gradually around 11.20++ and ticks into place around 12.00. Is this normal? I thought all Rolexes are supposed to change instantly at 12midnight.

2 July 2018, 11:58 PM	#2
Floorguy 2024 ROLEX DATEJUST41 Pledge Member Join Date: Feb 2013 Real Name: Rob Location: Parrish fl. Watch: Tt datejust 16233 Posts: 20,947	Mine changes at midnight! Might need a service, or just a cleaning! Mine is from 65’ __________________ Rolex Omega Tag Heuer

3 July 2018, 01:40 AM	#3
Vlad "TRF" Member Join Date: Oct 2008 Location: Texas Posts: 813	Take the caseback off, pull the stem, remove the movement, pull the hands, remove the dial. Date change mechanism is right there. adjust the springs, put it back together. If you never have done this before - take it to your favorite watch maker.

4 July 2018, 11:45 AM	#4
R.W.T. "TRF" Member Join Date: Feb 2014 Location: Central Texas Posts: 1,973	It's not a quick change date like a later date just. I don't mean quickset, I mean quick change. It doesn't have the same mechanism, so you won't see it "snap" like you do with a calendar wheel with a cam and spring yoke and jewel. It's a completely different kind of operation. What you are describing is normal for 1215 1225 calibres. On this watch, the calendar wheel has a pawl pin that comes around once in 24 hours and engages one of the sharp teeth on the "date star" on the underside of the date disc. Opposite of that the jumper spring will snap and hold it in place once the pawl has pulled it into place. You see the disc begin to move as the pawl enters the teeth on the star wheel and progress forward as it slowly turns. The early calendars work this way. Early 7xx series up to 1035. 11xx series also. You get the snapping calendar beginning in the 1065 and 1066 and then of course in the 15xx movements on up in the full size. Those use the open calendar disc without the "star wheel" and use a calendar wheel that uses a snapping cam and spring yoke that push the date disc a much further distance utilizing much larger "teeth" or gaps really on the date disc, right at midnight and the more powerful jumper spring helps that operation and secures the number in the proper place in the date window.

8 July 2018, 06:44 PM	#5
bloke1 "TRF" Member Join Date: Jul 2018 Location: MALAYSIA Posts: 2	Thanks R.W.T. You are right. I've seen some videos on youtube on setting the date and they all seem to behave like that. No date snapping.

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