3185 vs 3186

[glennyuen]

Thank you for the inputs Gentlemen I wasnt aware RSC can provide free service as such..
Thanks!

[sshark]

Or you could do a "wiggle" test as shown in here

[triton]

this would save a potential $107?

however no rolex cleaning cloth

[jieming]

You can try this test. I have an Exp 2 Z series having 3186 movement as well. If you still having problem and happened to nearby my place, i could run the test for you.

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

Hi,

May I know how to identify if a GMT Master II Z serial has got a 3185 or a 3186 movement?

Will getting a $107 verified by RSC disclose the movement model to me?

thanks

[sys12345]

Dont need to waste that $$$. The wiggle test works!

[Hairymonster]

Dont need to waste that $$$. The wiggle test works!

I run the video twice and can't figure out what wiggle test indicating, anyone can enlighten? Thanks

[glennyuen]

on the new cal 3186, the red GMT hand does not move much (aka 'wiggle') with the hour hand
on the old cal 3185, the red GMT hand 'wiggles' when adjusting the hour hand
reason being on the new 3186, the red GMT hand is shifted from the center of the movement where the hour,minute and second hands is attached, hence it is unaffected by the movement of the hour hand
on the old 3185, all 4 hands are attached in the center of the movement

Good info !

But missed the boat as watch was sold due to procrastination :/

thank you all for your input though..

The seach for a Z series with 3186 is indeed an exciting one

[r4gs]

good read about the 16710 and 3186 movements - http://www.minus4plus6.com/paracromblu16710.htm

incidentally, i bought an m serial 16710 with the 3186 and stick dial in vegas almost 4 years ago now

[dark_divine1218]

3185 vs 3186

whats are the significant diffenrence between thia two movements?

i know both have GMT and date, one is older and one is latest version.. beside that any expert can explain whats is new for 3186? my D series 16570 runs on 3185 but my cousin 16570 v series runs on 3186.

[Oceanklassik]

http://www.sg-roc.com/threads/7837-3186-movement...?highlight=3186

[dark_divine1218]

http://www.sg-roc.com/threads/7837-3...highlight=3186

thanks!