It's a chrono module and the 2824 is used as a driver, good.

 

What do you mean by "module"? It sounds like something added onto the 2824 movement to allow for the chronograph functionality, but I'm not quite sure. And if that is done, how does the ETA 2824 "drive" the module?

And lastly, is this less preferred than a true chronograph movement, like the ETA 7750?

Sorry about all the questions. I'm just trying to learn.

Thx...Doug

 

And what other watches use this movement? I've never heard of it before.


Thx...Doug

 

Dubois Depraz is known as a top-notch company that does movement finishing and complications for many high-end brands, so the quality is probably top-notch. In addition, getting an affordable mechanical chronograph that's not based on the ETA 7750 is always nice, because you have a more interesting watch.

There is, supposedly, one drawback to add-on chronograph modules which is that many "local" watchmakers can't service their tiny, highly-specialized parts in-house. They need to be sent back to the manufacturer for cleaning and lubrication, so each service will cost more . . . that's typical of a lot of high-end movements.

 

You have two separate movements in your watch that are joined together to make the complete chronograph movement. The 2824 is the regular watch part of the movement. The Dubois Dupraz is a separate movement made by a separate company that is a stop watch only and made to be attached to the base movement and uses the power of the base movement to drive the stopwatch module. The chronograph movement is actually two separate movements made by two separate companies that are joined to make the complete chronograph movement. This type of chronograph movement is called "modular" and is typically distinguished by the chrono pushers not being in line with the crown. A chronograph movement that is built from the ground up as a single chronograph movement is called "integrated."

Most watch snobs, including yours truly, hold integrated chronograph movements in higher regard than modular ones. But it is not disputed that modular movements can be very fine and the Dubois Dupraz modules are used by Audemars Piguet in the Royal Oak Offshore, Tag Heuer and others. AP has recently produced an inhouse integrated movement that will perhaps replace the Dubois Dupraz modular one.

Dubois Dupraz makes fine modules and they make them for many companies. I would imagine, but do not know, if they offer different quality level modules, and that is all that they make, as far as I know.

On the AP ROO the module is placed on top of the base movement with the result that the date is rather far down below the window and a little harder to see.

 

On the AP ROO the module is placed on top of the base movement with the result that the date is rather far down below the window and a little harder to see.

Interesting. That must be exactly how my Zodiac is built, because the date is also sunken below the dial and a little hard to see. I wondered why this was (as opposed to my Omega and Bvlgari, both of which the date is flush with the dial).

Thanks a lot for the explanation. It was very helpful!

Thx...Doug

 

b-) My favorite modular is the Eberhard - Boucanier Grande Date. It's a Jaquet 3532 driven by an
ETA 2892.

 

The Dubois Dupraz chrono module has been used extensively by great manufacturers, and some still do. Almost all Navitimers use the tricompax DD2021 module connected to ETA 2892 movement. Omega, JLC, Tag Heuer, Richard Mille and even Rolex have models with DD modules. It is situated below the dial sandwiched with the main movement. I own some chronos with this module and work flawlessly from the first day.

 

Hi all, i recently bought the Roamer stingray Chronograph with the Movement 2824 / Dubois Depraz 2025 Chrono Module. A wonderfull Retro of the original Stingray from the 70's.
But I have seriously question please and hope one of you guys can help with an answer. When I set the Time, Second Hand on Zero Position, and then Start the watch by pushing the Crown back into 0 Position again, it Looks like the Minute Hand Moves extremely slowly. The Second Hand moves 60 seconds and the Minute Hand only apprx less then a half Minute. An other thing I'm wondering about is, when i press the Upper Pusher to get the stop watch Function started, the Minute Hand jumps a Bit forward. But not very much. When the Big stop watch hand Runs for some minutes or so and i stop it again with the Upper Pusher, the Minute Hand again jumps a tiny Bit forward. And when I press the lower Pusher to Set the stop watch hands back on 12 o'clock, the Minute Hand again jumps forward. But this Time i in a half-Minute-step.
Is anything wrong with the movement or is this a normal behaviour? A very similar behaviour Shows my Doxa sub-600 t-Graph Chrono, which has , i assume , the Same movement. My chronographs with the valjoux 7750 movement Does not Show this behaviour.
Any ideas?
regards
TSC

 

I don't think that is an inherent problem of the D&D module. My Zodiac Calame chrono function works perfectly fine.

 

I don't know about the DD 2025 but I have several vintage Tag Heuer with the dd 2000 and they all perform just fine. Even the date, though it is below where it would be on most watches, DD magnifier seems to work well.
Willy

 

From what I understand, the DD module (the chronograph part) is "serviced" by replacing the module with a refurbished unit, and sending the old one in for refurbishment.
My OCD detests the pushers on a different plane than the crown, and I generally dislike parasitic modules. I sold my JeanRichard collection of chronographs because of it. But that's just me. I can't deny (from what I have read) that DD makes a quality component. Heck, if AP uses it...of course, the AP automatic time-only movement that powers the DD module is arguably better than the ETA automatic, but ETA makes a good quality movement too.