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leopardprey · 18 March 2007, 01:43 AM

When did the Exp IIs and GMT IIs switch over to the 3185 movement? What year Lettered Series #? What was the movement # before and what are the differences/improvements with the 3185 compared to the old? thanks.

Ironstark · 18 March 2007, 02:36 AM

Don`t know the exact year or letter/code for the case, but I can find out exactly when on Monday when I`m back at work.
The previous movement was the 3085.
The main differences/improvements, smoother/more efficent automatic winding.Smoother manual winding. The hairspring is laser welded to the hairspring bridle on the 3185 on the 3085 it was glued into the stud and over time it could work loose and the watch would lose drastically. The calander mechanism was improved. From a watchmakers point of view the 3185 is easier to work on.

Prince · 18 March 2007, 03:05 AM

I believe that the 3185 movement went into service in 1988.

EDIT: Forgot to mention that the lettered series would be "R".

mike · 18 March 2007, 03:12 AM

Quote:

Originally Posted by Prince

I believe that the 3185 movement went into service in 1988.

Yeah, with the advent of the 16710.

JJ Irani · 18 March 2007, 03:27 AM

Quote:

Originally Posted by mike

Yeah, with the advent of the 16710.

I think that would be 1985, guys!!

mike · 18 March 2007, 04:03 AM

Quote:

Originally Posted by JJ Irani

I think that would be 1985, guys!!

I dunno JJ, here's a pretty complete history of the GMT.

http://www.doubleredseadweller.com/gmt_transition.htm

18 March 2007, 01:43 AM	#1
leopardprey Banned Join Date: Nov 2006 Real Name: Chad Location: Around the world Watch: Panerai 233 Posts: 4,204	When did GMT/EXPs go to 3185 movement? When did the Exp IIs and GMT IIs switch over to the 3185 movement? What year Lettered Series #? What was the movement # before and what are the differences/improvements with the 3185 compared to the old? thanks.

18 March 2007, 03:05 AM	#3
Prince "TRF" Member Join Date: Feb 2006 Real Name: Allan Location: St. Augustine, FL Watch: Daytona/Sub/GMT/DJ Posts: 20,323	I believe that the 3185 movement went into service in 1988. EDIT: Forgot to mention that the lettered series would be "R". __________________ Member: Rolex Keeper's Society "You see, you can't please everyone, so you got to please yourself." - Rick Nelson Last edited by Prince; 18 March 2007 at 03:17 AM.. Reason: Added stuff!

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18 March 2007, 02:36 AM	#2
Ironstark TechXpert Join Date: Mar 2007 Location: Rolex world Watch: SS/W Skydweller Posts: 527	Don`t know the exact year or letter/code for the case, but I can find out exactly when on Monday when I`m back at work. The previous movement was the 3085. The main differences/improvements, smoother/more efficent automatic winding.Smoother manual winding. The hairspring is laser welded to the hairspring bridle on the 3185 on the 3085 it was glued into the stud and over time it could work loose and the watch would lose drastically. The calander mechanism was improved. From a watchmakers point of view the 3185 is easier to work on.

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