ChristianDK
[F.P. Journe Moderator]
13049
It has been discussed and tested over.
It has been discussed extensively over the years. In the very early days some armchair discussions had people claiming it didn’t work. However, if you own the watch you know if it works! (when it works)
The movement is in fact two movements that run completely separate. When you wind the movement after it has run down to a stop, you can hear the escapements are not synchronized like two people walking out of tact. (If the movement is properly regulated and properly wound) after a little time, you will eventually hear that the escapements have fallen in to a tact - beating as one.
Also have a look here.
My first Resonance I had years ago kept drifting out of sync so the second hands didn’t align after appr 10-12 hours. It basically just worked as two separate watches in one. The one I have now (my 3rd) will stay in tact basically as long as I wear it. It can be brought out of sync if it is exposed to shock like if I am cycling on coupled stones that my town is full of or almost complete run down. Otherwise left on a table or worn carefully it will not. Try to Image having two of your watches regulated so they wouldn’t drift apart over many, many days and beating in tact. Highly improbable!
More posts:
Resonance question
I was discussing this delightful model with someone the other day, and the question came up: does the "resonance" feature actually function as advertised? The underlying hypothesis is that the two balance wheels interact with each other (even though they ...
It has been discussed and tested over.
It has been discussed extensively over the years. In the very early days some armchair discussions had people claiming it didn’t work. However, if you own the watch you know if it works! (when it works) The movement is in fact two movements that run compl...
Good to hear your personal experience with this awesome watch.
If you cycle on cobblestones and the watch is jolted a bit out of phase, does the resonance reassert itself in time? Obviously, there are limits, but in normal daily use with bumpy bike rides, did you find it corrects or does it require a winding down and...
Yes it will automatically fall back in to tact ..
...But the seconds hands will,(of course) remain misaligned by a second or two. So I simply pull the the sync button and both sec hands are pulled back to their 0/60 positions. And I go on wearing it. This is not something that happens often BTW.
Very helpful ...
... do you happen to know the medium of “communication” between the two balance wheels? In a piano or guitar, one vibrating string will cause another string to vibrate; the medium there is sound waves (fluctuations in air pressure). Do you think that’s th...
This has been discussed many times over the years
Here's an article by Jack Forster explaining the FPJ Resonance www.revolution.watch
Thank you
Jack at his finest: “I am as sure as I have ever been of anything that Mr. Journe knew of Breguet’s notes perfectly well but every instance I know of of persons asking him how the Chronomètre à Résonance actually works has been met with, essentially, a ra...
I don’t have much to add to Mr Forsters excellent article.
It sums up the discussions I remember of “working / not possible” back in the primeval soup of watch forums. It also explains better than other articles I have seen, the underlying principles. My personal perspective is that of experiencing the watch and ...
Glad you remembered this article ...
I had forgotten about. It is very good and giving a Proper explanation of how it works.
Sympathique resonance
It’s called sympathetic resonance. When 2 pendulums are side-by-side And one is in occilation the second one in a few seconds of the first one swinging will swing at the same frequency. They have to be in close proximity of each other. This is called symp...
