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Valjoux 7750: The World’s Biggest Chronograph Motion By Far (By Reputation And Numbers) – Reprise

Jesse by Jesse
February 5, 2023
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Valjoux 7750: The World’s Biggest Chronograph Motion By Far (By Reputation And Numbers) – Reprise
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After I first acquired into watches, I used to be contemporary into school. Though I labored two jobs on the facet to feed my rising dependancy, even in these days it didn’t get me so far as I might have appreciated to go.

I needed one in every of each type of complication: though tourbillons, perpetual calendars, and the like have been nonetheless far past my means, an automated chronograph was doable. I ended up getting a Hamilton Khaki Chronograph, which I purchased from its first proprietor and solely paid a number of hundred euros for.

Whereas that watch has come and gone now, one thing did keep and that was my love for its motion: the Valjoux 7750. I turned impressed by its efficiency and enamored by its little quirks.

Whereas my data deepened and I acquired to know different chronograph actions made by Lémania, Jaeger-LeCoultre, Zenith, and Frédéric Piguet, the Valjoux 7750 caught with me. In fact, this can be a private choice, and one can simply make a equally passionate assertion about any of the opposite chronograph actions. However for me the motion itself, the tales behind it, and its efficiency on the wrist remodeled it into my favourite automated chronograph motion.

The story of the turtle and the hare

The historical past of Caliber 7750 began when Valjoux discovered itself in considerably of a predicament.

In 1969 Zenith-Movado launched its first automated chronograph motion: the El Primero. And Breitling, Hamilton, Heuer, Buren and Dubois Dépraz had joined forces and launched the Chronomatic motion in that very same 12 months.

Zenith El Primero chronograph movement from 1969

Zenith El Primero chronograph motion from 1969

That put Valjoux in a decent spot, and the corporate determined that it was as much as its contemporary rent, Edmond Capt, to get the corporate out of it. Valjoux not solely needed him to develop the motion as shortly as attainable, nevertheless it additionally wanted to be a sturdy, dependable, and correct automated chronograph that was comparatively cheap to make and included a quick-set day and date.

As if this wasn’t sufficient stress, by this time the Japanese have been already conquering invaluable market positions with their quartz watches, which might later have a significant impression on the historical past of the 7750.

To hurry up the event Capt used the Valjoux Caliber 7733 as his place to begin, a manual-wind chronograph. This wasn’t his solely benefit as a result of Capt additionally had the assistance of Donald Rochat and a pc to make drawings and calculations. The latter might sound like a given now, however again then it was a rarity, even within the Swiss watchmaking business.

What made the 7750 so totally different was that its working system didn’t depend on column wheels, however moderately on levers to function the totally different features of the chronograph utilizing an oblong-shaped cam. This resulted in a dependable chronograph that might be mass produced a lot simpler than its column wheel-operated cousins.

ETA/Valjoux 7750 front and back

ETA Valjoux 7750 back and front

Capt and his group labored quick in creating what would turn into the Valjoux 7750. They labored so shortly that in 1973 the primary actions have been delivered to prospects. However the Valjoux 7750 appeared to turn into a supernova, burning brightly for a really brief time after which imploding.

By 1975, after solely two brief years, Valjoux prospects felt the squeeze of the Japanese quartz actions to such an extent that orders plummeted and Valjoux determined to halt manufacturing of it fully.

Valjoux 7750: identical script, totally different forged

Right here the story takes a flip much like that of the El Primero. Valjoux’s managers have been satisfied that the tip of mechanical watchmaking was upon them and ordered the entire destruction of every thing associated to the Valjoux 7750. They trusted Capt to hold out these orders, however that’s like asking a person to kill his personal little one. So Capt – like Charles Vermot at Zenith – merely saved every thing as a substitute of destroying it.

However then the sudden occurred. Because the Nineteen Eighties approached, there was a sudden a renewed curiosity in mechanical watches – and Swiss manufacturers have been in dire want of an automated chronograph caliber to make the most of this alteration within the wind.

Valjoux had joined Ebauches SA in 1944, which along with different essential motion manufactures tried to control the manufacturing of actions. The quartz disaster introduced it to the brink of chapter, and so they ultimately ended up being consolidated into ETA, which turned a part of the conglomerate that we now know because the Swatch Group.

ETA main factory building in 2008

ETA’s essential manufacturing facility constructing as seen in 2008

The truth that Capt stored all of the instruments and drawings to make the 7750 was now thought of a godsend, and manufacturing was resumed within the Nineteen Eighties. From there on Caliber 7750, now belonging to what was known as ETA/Valjoux or just ETA, would play an important function within the fame and fortune of fairly a number of esteemed manufacturers.

Valjoux 7750: powering progress

In 1984 Breitling was nonetheless within the fingers of Ernest Schneider, who purchased the ailing firm in 1979 from Willy Breitling. It was the 12 months by which the model celebrated its centennial anniversary, and it did so with a very new model of the Chronomat – powered in fact by the Valjoux 7750. For its time it was a really massive and sturdy watch, however much more importantly it will introduce a very totally different design language, which might propel Breitling into a really profitable chapter of its historical past.

IWC additionally shortly took a liking to the 7750, and it was technical director Kurt Klaus who used it as a base for what would turn into the legendary Da Vinci perpetual calendar chronograph. IWC was at the moment owned by German instrument maker VDO Adolf Schindling AG, with Günter Blümlein on the helm as CEO (Blümlein would additionally later play a pivotal function within the resurrection of A. Lange & Söhne and the survival of Jaeger-LeCoultre).

Klaus himself obtained a part of his training from Albert Pellaton, IWC’s famed technical director. When he was requested to develop a perpetual calendar with a chronograph, he took a completely totally different strategy than Capt. Whereas computer systems have been now accessible, Klaus used a calculator and sketched by hand.

IWC Da Vinci perpetual calendar chronograph

IWC Da Vinci perpetual calendar chronograph

This makes the consequence all of the extra exceptional as a result of not solely did the Da Vinci mix a perpetual calendar with a chronograph, it additionally included a four-digit 12 months indication. And your entire calendar might be set simply through the use of the crown. As a result of it was based mostly on the ETA Valjoux 7750, the watch was additionally very sturdy and dependable, one thing that can not be stated of all perpetual calendars, particularly not these with extra problems resembling a chronograph.

The Da Vinci was launched at Baselworld in 1985, and its success took even IWC without warning, turning Klaus right into a watchmaker with rock star standing throughout the business.

Valjoux 7750: complication upon complication

The Da Vinci wasn’t the one watch based mostly on the ETA Valjoux 7750 that made an ideal impression on IWC, and once more it was the genius of 1 man that made a distinction. This time his title was Richard Habring, and he was requested to search out an inexpensive approach to create a split-seconds chronograph.

In these days you wanted two column wheels to take action, however Habring took the ETA Valjoux 7750 and devised a intelligent manner round this. The mechanism he designed was operated by a lever-and-cam system, his mind-set persevering with alongside the identical line as Capt’s when he initially designed the 7750.

The truth that this answer additionally resulted in an additional pusher at 10 o’clock to function the rattrapante was truly a bonus. It offered a refined distinction between IWC’s Fliegerchronograph (pilot’s chronograph) and Doppelchronograph (split-seconds chronograph), one thing that homeowners of the latter in all probability significantly appreciated.

IWC wasn’t completed with the 7750 but, although. In 1993 the model celebrated its one hundred and twenty fifth anniversary with Il Destriero Scafusia (the “Warhorse from Schaffhausen”). This watch mixed a perpetual calendar, split-seconds chronograph, flying tourbillon, and minute repeater. Whereas considerably disguised, the format of the 7750 remains to be seen from the again, although the flying tourbillon and Habring’s rattrapante setup may cause distraction.

IWC wasn’t the one agency utilizing the now-ubiquitous 7750 as a base for extra sophisticated creations. Within the Nineties Fortis turned the companion of the Russian Roscosmos area program, and in 1994 its first official cosmonaut’s watch went into area as a part of the usual gear of the Russian cosmonauts, additionally worn by these within the Worldwide House Station (ISS).

Fortis B-42 Cosmonaut Chronograph alarm

Fortis B-42 Cosmonaut Chronograph alarm

Nevertheless, as timing is crucial in area the cosmonauts quickly requested their chronographs even be geared up with an alarm operate. To realize this Fortis enlisted the assistance of impartial watchmaker Paul Gerber to create the world’s first automated chronograph with alarm operate.

Gerber used the 7750 as a base caliber, then added a second spring barrel to energy the alarm, which was additionally wound by the motion’s rotor, which was barely enlarged and made heavier to wind two barrels effectively. To create room for all this, Gerber raised the rotor 1.5 mm increased.

This motion, named F-2001, was launched in 1998. In 2012 Fortis celebrated its centennial anniversary with an much more sophisticated model of that motion, which now additionally included a GMT operate in addition to an influence reserve indicator for each barrels.

Porsche Design Indicator movement

Porsche Design Indicator motion

Hardly recognizable as such, however nonetheless outfitted with a 7750 as a base motion, is the Eterna 6036, which powers the Porsche Design Indicator P’6910. This watch shows the elapsed hours and minutes of the chronograph operate with leaping indicators at 3 o’clock mixed with an influence reserve indicator and working seconds. To realize this, greater than 800 totally different parts are wanted.

Renaissance of mechanical watchmaking included loads of Valjoux 7750s

When the renaissance of mechanical watchmaking was in full swing, ETA Valjoux additionally started providing extra sophisticated variations of the 7750, most notably the 7751, which mixed the chronograph with a full calendar and a moon section show.

Much less well-known is the 7758, by which the hour counter makes room for the moon section, although the date stays at 3 o’clock. For many who most well-liked the extra balanced tricompax format of the chronograph features, ETA additionally launched the 7753 with its subdials positioned at 3, 6, and 9 o’clock.

Because the curiosity in mechanical watches elevated, so did the data of collectors. Cam vs. column wheel turned – and nonetheless is – a favourite dialogue level, with fairly a number of preferring a column wheel to manage chronograph features.

This enticed some motion specialists to change the 7750 by incorporating a column wheel. Alfred Rochat did this for instance for Chronoswiss and La Joux-Perret for Panerai, Graham, Chopard, and Hublot. Though this in fact went towards the grain of Capt’s unique design, it did present these manufacturers with column-wheel chronographs that have been nonetheless a lot inexpensive to make than if that they had opted for a motion that was developed to incorporate a column wheel from the start.

As watches elevated in diameter, the 13 lignes (or 30 mm) of the 7750 weren’t sufficient to amply and elegantly fill circumstances, so ETA developed the Valgranges line. This elevated the motion diameter by greater than 20 p.c to 16 lignes or 36.6 mm, whereas providing the identical problems.

ETA Valgranges movements

ETA Valgranges actions

Fascinating to notice is that this assortment additionally consists of a number of variations that lack a chronograph operate, primarily creating a sturdy motion that mixes the time with a date and maybe an influence reserve complication.

That was nonetheless not the primary time that the 7750 was used on this manner. Panerai took away all of the components supporting the chronograph operate, leaving solely the date at 3 o’clock and the working seconds at 9 o’clock, to show the 7750 into its OP III caliber.

Whereas this will look unusual, additionally it is an affidavit to the robustness of the motion itself. And it was a comparatively simple manner for Panerai to acquire an automated motion that featured a date in addition to subsidiary seconds at 9 o’clock, which match properly with that model’s “DNA.”

You’ll be able to strip down a Valjoux 7750 or construct it up

In 2009, Longines needed to strengthen its place within the chronograph market with an automated column wheel-controlled motion. So the Swatch Group-owned model took an ETA Valgranges A08.L01, which in itself was based mostly on the 7750, and geared up it with a column wheel, vertical clutch, oscillating pinion, and a self-adjusting. two-armed reset hammer to create Longines Caliber L688.

It was this motion that Omega used as a base to create its personal Caliber 3330, including a co-axial escapement and a silicon stability spring.

Bread and butter

Forty-five years after the primary 7750s have been delivered to shoppers in 1973, the Valjoux 7750 remains to be going sturdy.

It could actually look again on a distinguished historical past powering an unbelievable number of watches and serving as the premise for some very sophisticated conceptions.

Chronoswiss Opus on the wrist

Chronoswiss Opus on the wrist: consider it or not, this watch is powered by a skeletonized Valjoux 7750

It was the motion that made the Chronoswiss Opus 1996’s Watch of the 12 months in Germany and it additionally shaped the premise of Marc Newson’s smartest mechanical watch, the Ikepod Megapode.

It’s the motion that may be present in a humble Hamilton or an unique Franck Muller; the one to energy a era of IWCs, Breitlings, and Omegas; and it strongly stays to today the motor of present collections of so many different manufacturers as nicely.

Whereas watch snobs might look down on the 7750, they’re in all probability additionally unaware of the delight that freshly baked bread with a generously utilized layer of butter can provide.

* This text was first revealed on September 22, 2018 at Valjoux 7750: The World’s Biggest Chronograph Motion By Far (By Reputation And Numbers).

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Jesse

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Watch Assessment: Bell & Ross BR 03-94 Chronograph
Wrist Watch

Watch Assessment: Bell & Ross BR 03-94 Chronograph

by Jesse
March 21, 2023
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I’ll admit that after I first encountered the sq. watches of Bell & Ross, I used to...

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