How to know if 3185 or 3186

[satellite1]

Hello,

How to now if cal.3185 orr 3186 inside Pepsi GMT 16710 from 2008 dec. serie Z 367...
Thanks in advance.
satellite1

[padi56]

Originally Posted by satellite1

Hello,

How to now if cal.3185 orr 3186 inside Pepsi GMT 16710 from 2008 dec. serie Z 367...
Thanks in advance.
satellite1

Check out the post by Tools in this thread but 3185 or 3186 it dont really matter.

http://www.rolexforums.com/showthrea...ht=wiggle+test

[sheldonsmith]

There is also the Crown test posted at http://www.minus4plus6.com/paracromblu16710.htm#crown

Essentially it is as follows:

The Crown Method

Another method for discerning a 3185 with the 3186 movement is through the the Crown Rotation Method. This method is another way to discern the type of movement without having to remove the caseback. Because the calendar and hour-hand setting mechanism was redesigned in the 3186 movement, the number of turns of the crown to turn the 12 hour hand is different on a 3186 than it is on a 3185.



To perform this test, unscrew the crown such that the crown is in the hand setting position. With the crown face-up, count how many hours the hour-hand travels with one full revolution of the winding crown.

• 3185: one complete crown revolution makes the hour hand jumps 6 timezones/hours
• 3186: one complete crown revolution equals 8-9 timezones/hours

This tip was provided to me by Ed who discovered this method on a French watch forum.

-Sheldon

[JJ Irani]

Originally Posted by sheldonsmith

There is also the Crown test posted at http://www.minus4plus6.com/paracromblu16710.htm#crown

Essentially it is as follows:

The Crown Method

Another method for discerning a 3185 with the 3186 movement is through the the Crown Rotation Method. This method is another way to discern the type of movement without having to remove the caseback. Because the calendar and hour-hand setting mechanism was redesigned in the 3186 movement, the number of turns of the crown to turn the 12 hour hand is different on a 3186 than it is on a 3185.



To perform this test, unscrew the crown such that the crown is in the hand setting position. With the crown face-up, count how many hours the hour-hand travels with one full revolution of the winding crown.

• 3185: one complete crown revolution makes the hour hand jumps 6 timezones/hours
• 3186: one complete crown revolution equals 8-9 timezones/hours

This tip was provided to me by Ed who discovered this method on a French watch forum.

-Sheldon

Spot-on, Sheldon......but I've actually tried this experiment and the results are as follows:

With the 3185 movement, one revolution of the CROWN, makes the hour hand jump forward FIVE hours.

With the 3186 movement, one revolution of the CROWN, makes the hour hand jump forward EIGHT hours - tried this on my Exp-II (V-series with 3186 calibre) as well as the TT GMT-IIC.

JJ

[onkyo]

Originally Posted by sheldonsmith

There is also the Crown test posted at http://www.minus4plus6.com/paracromblu16710.htm#crown

Essentially it is as follows:

The Crown Method

Another method for discerning a 3185 with the 3186 movement is through the the Crown Rotation Method. This method is another way to discern the type of movement without having to remove the caseback. Because the calendar and hour-hand setting mechanism was redesigned in the 3186 movement, the number of turns of the crown to turn the 12 hour hand is different on a 3186 than it is on a 3185.



To perform this test, unscrew the crown such that the crown is in the hand setting position. With the crown face-up, count how many hours the hour-hand travels with one full revolution of the winding crown.

• 3185: one complete crown revolution makes the hour hand jumps 6 timezones/hours
• 3186: one complete crown revolution equals 8-9 timezones/hours

This tip was provided to me by Ed who discovered this method on a French watch forum.

-Sheldon

Thanks for that great info and link Sheldon....

[scottschoe]

Originally Posted by satellite1

Hello,

How to now if cal.3185 orr 3186 inside Pepsi GMT 16710 from 2008 dec. serie Z 367...
Thanks in advance.
satellite1

It's a 3185 since it's an early Z.

[JJ Irani]

Originally Posted by scottschoe

It's a 3185 since it's an early Z.

Correct!!

Some of the later on M-series would have the 3186, but you would need to get lucky in that respect, because some M's had it and some not.

JJ

[scottschoe]

Originally Posted by JJ Irani

Correct!!

Some of the later on M-series would have the 3186, but you would need to get lucky in that respect, because some M's had it and some not.

JJ

I still haven't heard of any confirmed M's with 3185's. Overall, serials were a pretty foolproof way of checking this until you reached right around the Z8 area.

[JJ Irani]

Originally Posted by scottschoe

I still haven't heard of any confirmed M's with 3185's. Overall, serials were a pretty foolproof way of checking this until you reached right around the Z8 area.

Well, you could be right......I was thinking of the Exp-II, but then I realised the OP had a Pepsi GMT-II!!

JJ

[HDHNTER]

Originally Posted by scottschoe

I still haven't heard of any confirmed M's with 3185's. Overall, serials were a pretty foolproof way of checking this until you reached right around the Z8 area.

This was my thought as well.

[satellite1]

Thanks too all of you .... super!!

satellite1

[submariner16610]

3186 movement started on the m series gmt2 pepsi. last production..

[JJ Irani]

Originally Posted by submariner16610

3186 movement started on the m series gmt2 pepsi. last production..

So does that mean ALL M-series GMT-II (16710) have been fitted with the 3186 movement?

JJ

[karmatp]

Originally Posted by submariner16610

3186 movement started on the m series gmt2 pepsi. last production..

The actually started in the late Z serials, from that point on, they should have the 3186.

[JUSTROLEXES]

the ones with the Z don't have the 3186.
I have sold 5 of the 3186 in the past year and all of them had an M3 serial...so I would guess that it has to have an M2 to M6 serial and they all had the stick dial as well...
I hope that helped.

[Casey VP-26]

There is a Z9 on one of the forums that was opened and found to have a 3186, and I have a Z86 GMT which passes the wiggle and the crown test exactly as my M36 GMT does However both are brand new and I don't intend to open the cases as of now. It has also been mentioned on these forums that there was a Z77 opened and it had a 3185 movement in it. As time passes and all members keep reporting we will get closer and closer to where it all started. If there are some Late Z GMT Models out there I would believe these to be the rarer of the M series GMT's , Only MHO.

[scottschoe]

Originally Posted by justrolexes

the ones with the Z don't have the 3186.
I have sold 5 of the 3186 in the past year and all of them had an M3 serial...so I would guess that it has to have an M2 to M6 serial and they all had the stick dial as well...
I hope that helped.

Wrong - late production Z's had 3186s. Dials don't mean anything.

[Casey VP-26]

I agree Fully with Scottschoe

[WatchTimes]

Uggg now I gotta go home and play with my White Exp II M to see...

I really did not care that much till now since you guys got my OCD going here...

Perhaps my ADD will kick in and I will just forget all about it by the time I get home.

Luckily I wore my IWC Aquatimer Ti Chrono today or else I wouldn't even be able to type this as Id be trying to figure it out ASAP.

[HDHNTER]

Originally Posted by scottschoe

Wrong - late production Z's had 3186s. Dials don't mean anything.

This is the right answer.

[ayres]

the same principle applies to the exp2s. i have a z977xxx with a 3186. i've encountered/communicated with others who have a late z gmt ii with the 3186. right, dials mean nothing. i tried putting together a table of serials to discern when they switched. i know of one z7 with a the 3186. presumably, all z8s will have them.