Blue Parachrom

[sturgeon123456]

There have been a number of posts about this subject. Here are my questions.

Do all GMT 2 C have 3186 movement.....or does it matter if it is an m or v or z.

Also what is the actual difference between the 3185 and 3186. Is it just the hairspring.

Please share your thoughts...opinion and knowledge on this issue.

[The GMT Master]

Originally Posted by sturgeon123456

There have been a number of posts about this subject. Here are my questions.

Do all GMT 2 C have 3186 movement.....or does it matter if it is an m or v or z.

Also what is the actual difference between the 3185 and 3186. Is it just the hairspring.

Please share your thoughts...opinion and knowledge on this issue.

Yes, they all have the 3186, and I think there must have been some kind of modification to the gears - there's a lot less slack in the 3186 when adjusting the time

[sturgeon123456]

Thanks....this leads me to another question. In the new dj ii or dd ii do they employ the new hairspring? Have they changed the name of those movements.

[esm]

3136 is the new movement in DJII with the new hairspring.

[The GMT Master]

Likewise, the one in the Day-Date II is the 3156, as opposed to the 3155

[acce1999]

Originally Posted by sturgeon123456

There have been a number of posts about this subject. Here are my questions.

Do all GMT 2 C have 3186 movement.....or does it matter if it is an m or v or z.

Also what is the actual difference between the 3185 and 3186. Is it just the hairspring.

Please share your thoughts...opinion and knowledge on this issue.

The 3186 has the new parachrome bleu (PB) balance spring, but also a new construction for the setting of the hour hand. No difference in function compared to the 3185.

All GMT2C has the 3186.

The mentioned 3136 has the new balance spring, but also a new date disc, for the larger DJ2.

The DSSD has the PB, but the caliber is still called 3135, since there are no other changes.

The Milgauss has caliber 3131, with the PB, but also some other changes to improve its antimagnetic properties.

Best,

A

[mgsimmer]

Originally Posted by acce1999

The 3186 has the new parachrome bleu (PB) balance spring, but also a new construction for the setting of the hour hand. No difference in function compared to the 3185.

All GMT2C has the 3186.

The mentioned 3136 has the new balance spring, but also a new date disc, for the larger DJ2.

The DSSD has the PB, but the caliber is still called 3135, since there are no other changes.

The Milgauss has caliber 3131, with the PB, but also some other changes to improve its antimagnetic properties.

Best,

A

You mention that the DSSD has the PB. What about the last 16610 subs and new ceramic subs?

Thanks!

[Tools]

Originally Posted by mgsimmer

You mention that the DSSD has the PB. What about the last 16610 subs and new ceramic subs?

Thanks!

16610's still use the Nivarox hairspring, however, the new ceramic Subs use a parachrom fitted 3135 movement..

Much of the Rolex line is now using the in-house spring though.

Milgauss
DJ II
DD II
Yachtmaster II
DSSD
GMT II
Sub ceramics
Explorer II

I expect that by the end of this year, almost all willl be retrofitted with it..

[CPTL]

Originally Posted by Tools

16610's still use the Nivarox hairspring, however, the new ceramic Subs use a parachrom fitted 3135 movement..

Much of the Rolex line is now using the in-house spring though.

Milgauss
DJ II
DD II
Yachtmaster II
DSSD
GMT II
Sub ceramics
Explorer II

I expect that by the end of this year, almost all willl be retrofitted with it..

Larry: can we be sure the latest 16610s and DJs aren't being fitted with the same 3135 that's going into the ceramic Subs? Why would Rolex be manufacturing two different 3135s?

[Tools]

Originally Posted by CPTL

Larry: can we be sure the latest 16610s and DJs aren't being fitted with the same 3135 that's going into the ceramic Subs? Why would Rolex be manufacturing two different 3135s?

I would say that no, we cannot be sure.. I believe that at some point, they will simply start producing all 3135's the same; just like they dropped production of the 3185 after co-producing it along side the 3186 for ~4 years......

.

[HL65]

Exactly.

[sturgeon123456]

You guys are all amazing. Thanks so much. So what exactly are the benefits in real world usage to these changes being made.

[acce1999]

Originally Posted by sturgeon123456

You guys are all amazing. Thanks so much. So what exactly are the benefits in real world usage to these changes being made.

None.

I would say that Rolex invented the PB only to be able to insource the balance spring. Up till now (and still for the 3130, 3135, 2235) the balance spring is manufactured by Nivarox, a company owned by the Swatch group. Nivarox is also a patented alloy, which have been used for many years.

I do not know if PB is better than Nivarox, but of course Rolex claims so. I have noted though that my PB based watches are more consistent (for example loosing or gaining the same amount of time every day), whilst the Nivarox based are slightly easier to adjust be help of position. (Minor issues, really - all are well within the COSC limits.)

Best,

A

[Poom]

Great infir and knowledge. Thks.