mkt33
[PuristS]
5252
I guess no one has tried to reproduce the results but at least GF reveal their data
From the original article on ThePuristS in 2004
" As intended,Greubel Forsey's invention makes a marked difference in improved time-keeping performance.The above graph, showing results from Greubel Forsey's internal testing, compares the results of the variations in rate of Greubel Forsey's own double-axis tourbillon movement in the different positions, with more conventional balance set-ups.They first tested the balance on its own,with a standard tourbillon and then with their double-axis tourbillon.The theoretical ideal would be represented by a straight vertical line and as shown,the Double Tourbillon 30 degrees gets closest to that ideal."
n=1 ?
over 24 hours?
I want to see the extended data set.
More please?
Cheers, Mike
This message has been edited by mkt33 on 2011-01-18 15:19:41
Making History: Last 22 Watches of the Greubel Forsey Double Tourbillon 30° Contemporaine
[The Greubel Forsey Double Tourbillon 30° Contemporaine: The beginning and the end of the model) Even before Greubel Forsey as a watch firm existed in Robert and Stephen’s minds, they had an idea for a Double Tourbillon where the angle of rotation (for th...
Thanks Andrew
some in depth interesting and exciting details about GF ... thei invention piece number one is a watch i adore and aim to own one day... owning a tourbillon from such watchmakers with their finishing standerds and innovation reminds me that thats what a p...
Thanks for the thoughts on this and could not agree more.
GF set out to re-examine the role of the tourbillon in the wrist watch and with it, came up with new forms for the escapement. Thanks for reading Andrew H
+1 Absolutely, that is my dream piece...
I guess I am not as much of a "Purist" as I thought... The Secret piece is much too plain for my taste! Thanks for the wonderful report Andrew Thanks Greubel Forsey for opening your doors to our community Mike
Bold claim...
Tested through Greubel Forsey’s EWT (Experimental Watch Technology), the movement had shown superior timekeeping over the single plane tourbillon in a wrist watch or with a basic lever escapement. Shown?
I guess no one has tried to reproduce the results but at least GF reveal their data
From the original article on ThePuristS in 2004 " As intended,Greubel Forsey's invention makes a marked difference in improved time-keeping performance. The above graph, showing results from Greubel Forsey's internal testing, compares the results of the v...
More please, indeed!
I would love to see more of the data behind this graph. What's the scale? How many pieces tested? etc etc That's just a tease! This message has been edited by BDLJ on 2011-01-18 17:47:02
More detail about the relative performance ...
... of the different escapement designs would be great. It sounds like it should be a third-year practical exercise in the best watchmaking schools anyway. I note that the biannual Concourse International de Chronometrie this year will include a separate ...
Not data
That's not data, that's a pretty picture open to any interpretation you feel like. Numbers? Scale? Algorithmic/linear? Sample sizes?... In the good old days companies gave real data, and even got testing authorities to provide it for them. nick
These GF pieces are always a pleasure to look at in person
so us mere mortals can only drool and dream. With the retirement of their first model, is there any plan to make a watch which mortals can afford? Maybe a time only watch w/ the same level of finishing? Cheers, Anthony
The Secret is my favorite variant.
I love the pure, beautiful dial. The original version of watch is also attractive, and there's the WOW factor in seeing the tourbillon, but the Secret speaks to so many of the things I want in a watch: legibility, class, and the beautiful interplay of col...
Thanks, Andrew, having had the chance to spend a little time with Stephen and the
last edition of the model, I have to say, I am smitten, despite the awesomeness of the IP2 - the IP2 is a work of kinetic and micromechanical art but I'm not sure if I would wear it daily; this one I would, definitely, if I can get used to its size on my ...
The evolution of GF's design aesthetic is amply demonstrated
in the course of Andrew's post, and in particular by this photo: I always felt that the original Double Tourbillon 30º was a rather unlovely watch. Its engineering and its finishing were impressive, but the dial layout, mouth-shaped tourbillon window...
Thanks a lot Andrew for this superb article.
The Double Tourbillon is one of my fav G&F... I saw this one in 2008 and was amazed by the show of the Double Tourbillon: But it was far from the shock I received when I saw the Double Tourbillon Technique... what a beauty ! Fr.Xavier This message has...