SIHH 2013: Roger Dubuis - a true chronometric marvel [Live Pics!]
Manufacture Roger Dubuis today lifted the veil on a truly remarkable new watch called the Roger Dubuis Excalibur Quatuor :
In short, the watch concentrates on the key tasks of a watch, that is to keep time
as precise and as consistent as possible.
To this end, the Manufacture Roger Dubuis invested 7 years of research. The outcome is a pièce de résistance featuring:
- 4 complete escapements
- 16 Hz overall frequency
- 5 differentials to coordinate the escapements, barrels and power reserve
- A simple but precise power reserve indicator
- 590 movements parts individually finished according to the requirements of the Poinçon de Genève
The overall goal was to balance the influences of gravity on the movement in real time. The four carefully positioned sprung balances work in pairs to compensate immediately for the rate variations caused by the changes in position. What the tourbillon achieves over the course of a minute, the Excalibur Quatuor achieves instantly.
Complementing its chronometric performance Quatuor also employs a sophisticated power reserve indication which displays the remaining autonomy with very few mechanical parts needed. The price to pay is actually that both power reserve hand and dial move in the same direction (something we have seen on Nomos watches, for example) giving a interesting twist to the display.
I will go through this with the help of the teasers I posted during entire January. For now here are the technical details.
- Watch: Excalibur Quatuor
- Case: 48 mm, pink gold
- Dial: Anthracite interior flange, transferred white minute track, inscriptions: Roger Dubuis and Hallmark of Geneva (anthracite engravings), power reserve indicator in pink gold, exterior flange in satin-finish anthracite, appliques in pink gold
- Water Resistance: 3 BAR (30m)
- Strap: Genuine alligator leather, hand-sewn, brown
- Buckle: Adjustable folding buckle in pink gold
- Production: 88 pieces
- Movement: Hand-wound movement RD101
- Features: Hand-wound mechanical movement, 163?4’’’, 113 jewels, finely adjusted in five positions, rhodium-coated, circular-grained decor. Stamped Hallmark of Geneva
- Specific features: Hours, minutes, power reserve indicator, 5 differentials, 4 Balance wheels, Power reserve indicator
- Number of parts: 590
- Thickness: 10.60 mm
- Frequency: 4x4 Hz (28,000 vph)
- Power Reserve: 40 hours
This message has been edited by Ornatus-Mundi on 2013-01-20 15:20:21 This message has been edited by AnthonyTsai on 2013-01-21 09:38:36 This message has been edited by AnthonyTsai on 2013-03-01 10:23:07
Comments: view entire thread
Four INDEPENDENT escapements...
... work in pairs to compensate immediately for the rate variations caused by the changes in position. What the tourbillon achieves over the course of a minute, the Excalibur Quatuor achieves instantly. They leave their traces on the back as well: I shall...
An impressive halo piece! Overkill done right.
Finally, a complication as outlandish and impressive as the watch's case! Sure, the concept screams "overkill", but the path taken (four escapements with five(!) differentials) is quite a bit more interesting than the norm - multiple tourbillons. The watc...
Noticing that Greubey-Fosey have a double-inclined balance this year, I wonder if there was some joint research between the 2. A ps to ei8htohms, theirs is freesprung
4 escapements, 5 differentials, and 16Hz total frequency!
The equalising properties of the four escapements need dedicated mechanisms to come into effect. In this case, differentials ! Roger Dubuis had already made headlines in 2005 by introducing a double flying tourbillon with a differential . This extraordina...
I'm trying to wrap . . .
. . . my decidedly nontechnical brain around the claimed resonant frequency, Magnus. The four escapements would have to be connected in series to effect the claimed 16 Hz resonance. This seems unlikely to my admittedly limited understanding. A parallel co...
There is NO resonance!!!
as this would as I understand defy the intended effect (and also require that the resonating escapements would be (1) linked appropriately to allow resonance and (2) beat simultaneously which would yield a summary frequency of 4Hz in this case). Thus, the...
4 escapements, 16 Hz - this SOUNDS GOOD!
When I saw the watch first I immediately thought WOW- this one really lives! As the four escapements beat asynchronously the sound is a very special one, unusual for a watch where one is used to the regular tick-tack. This one definitely has character (tu...
Additional live pics and wristshots...
For what it is, the design of the Quatuor is actually quite restrained. As the escapement require some vertical breathing space there was little choice than to open the dial (if you want to keep the watch reasonably 'thin'): Bold applications at 12, 3, 6,...
And a really bold watch! Work of art, even if horlogically speaking, the use of those 4 escapments can be debatable. Still a pleasure to look at. Thanks for the great report!
Thanks much for the sharing. But
is there a need to go thro such extent to keep time as accurate & consistent? Looks a tad overkill for me. But I'm just a layman ;p Melvin
My faith has been restored!
Wow, just wow! What an amazing piece--- my faith in RD has just been restored. The silicon model is incredible looking---thanks for the review-- I have just seen my new grail watch---hopefully, one day, RD makes more than 3 examples of the silicon version...
I would hate to be the watchmaker that services that watch, however. It looks like an adjuster's worst nightmare! Every hairspring would have to be perfectly flat and true. Literally 4 watches in one- all requiring a perfect service. Yikes. In principle, ...
looking forward to more info...love it how it pushes the limits...