A. Lange & Söhne

press release, as posted by SJX in our News Central No other watch runs longer: The new manually wound A. Lange & Söhne timepiece has a power reserve of one month. That is why it has been named the LANGE 31. Another innovation, a constant-force escapement...  

So far the press release by A. Lange & Söhne, which mentions a detail apparently overseen in various internet discussions. The movement utilizes a "remontoir" or "Constant Force" mechanism, which itself may be a more elaborate construction than easily app...  

Hi Peter, does that mean the Lange Remontoir is better? Just curious. I hope so as its price is almost double of Journe Remontoir Tourbillon ;-) Very expensive 'clock'. Cool to own one though if you are a Lange collector Lovesss*CL

Hi John, i don´t feel properly qualified to judge on "better"; i´m tempted to believe it´s safe to say it is different from the Journe approach (and others, like the Prescher DAT and TAT for example). There are different ways to power a remontoir and diff... 

I look forward to the opportunity to see this piece in metal *CL

where was the picture of the remontoir you posted taken from? The Lange remontoir used in the Lange 31 is very complex, and features a one tooth wheel pivotted and driven eccentrically by a three sided cam which is in turn driven by the fourth wheel. It f...  

the same (conceptually). I believe the photo showed the final "presentation" of the "same" device as shown in the last picture given by PeterCDE. To my understanding, the device use the power provided by the mainsprings to "wind" a small hairspring that i...  

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400 plus parts, 46mm by 16mm (regulation hockey puck, only heavier) is butt ugly and introduces a 180 K solution previously covered, or at least I though by the automatique watch. I remember Ockham's razor to the effect (I paraphrase) never multipy entiti... 

. . . it's a pretty remarkable achievement IMVHO to create a 31 day wristwatch in something under 50mm diameter, and using a train remontoire is a nice solution to getting even power flow to the escapement for the full run. I like the aesthetics of the wa... 

that a remontoire is any constant force device, a 'constant force escapement' is one in which the remontoire's energy is delivered directly to impulse the balance, and that constant force escapements fall under the general heading of remontoires. So by th... 

between this Remontoire to the Journe's ? I'm curious. Lovesss"CL

don't yet have details on how the Lange remontoire works. We do know that a remontoire of any sort uses a spring somewhere in the power train that is periodically re-armed so it can discharge even force to the escapement. In the Lange a spiral spring is u... 

A lot of talk about this new watch. Not as aesthetically pleasing as I had hoped for but it sure is an interesting watch no doubt about it. Hope to see more affordable and more wearable spin-off projects in the (near) future (my dream of a 8~31 day PR Lan... 

Hi Edwin, i agree and to be honest, i´m quite amazed to see how much responses a seemingly "simple" piece in an unforseen size can create... It doesn´t need a 6-axis-splito-tourbo-repeato-something to create some substantial awareness And THIS seems to be... 

with 2 weeks PR. ;-) Like you I am surprised by the avalanche of responses. Thanks again. Edwin

Hi Edwin, on a second thought, what would you regard an advantage over the Langematik Perpetual? Frankly, perpetuals are finicky creatures. Setting isn´t easy, thus best to have them on a winder (or the wrist). In this regard, the automatic winding is of ... 

as I dont really fancy the subdial layout of the Langematik Perpetual. And ´my´ Calendar Lange-1 doesnt have a year, month and day display on the dial; the year and month indicator are on the back of the watch. You see, with your eyes closed you can creat... 

Hi Edwin, for sure you have a point here! The Perpetuals (and the worldtimer) come with likewise "busy" dials, which i guess to go back to "show what you are". A more sober look, particularly with indications placed on the back, might be a "teutonic" appe... 

well except for its size perhaps. And I dont mind a dial with a lot of indications but only when the result is easthetically pleasing. Some of the old pateks I fancy (like the 3448 3450 2497 and lots of other models as well) as often they used windows to ... 

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