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769 posts · Joined 2012. #12 · Dec 6, 2012. As for hand-winding an automatic watch, the hand-winding position is always position 1 (except on rare, squirrelly movements you''ll rarely find). Position 2 is for setting the date (and day if applicable), and position 3 (crown pulled all the way out) is for setting the time.
The ETA Valjoux 7750 chronograph movement is well-known in the world of watchmaking for being tough, reliable, and versatile. Since it was first introduced in the early 1970s, it has gained a strong reputation for being accurate and long-lasting, which has made it a favourite chronograph calibre among both watchmakers and enthusiasts.
A Closer Look At How Tissot Drastically Improved The Iconic Valjoux 7750 Chronograph Movement. The venerable chronograph meets the requirements of the 21st century. Just yesterday, Tissot introduced a lovely and affordable vintage-inspired chronograph, the Telemeter 1938. The watch''s bi-compax layout comes courtesy of a
Currently there are two Chinese manufacturers producing 7750 clones: Shanghai (3L series) and Liaoning Peacock (4 series). Quite a few years ago I had the opportunity to sample various versions alongside a watch with an ETA 7750 movement. Unfortunately the Chinese watches were of the kind that are supplied with an unoiled
First introduced in 1974, the 7750 was Valjoux'' answer to the Zenith El Primero automatic movement. Many watch enthusiasts have dismissed the 7750 as a
The ETA/Valjoux caliber 7750 is one of the most recognizable and widely used automatic chronograph watch movements. It was based on the manual wind Valjoux caliber 7733, which itself was
Pound to a penny there''ll be something in there running the ostensibly humble Valjoux 7750. It''s a movement that powers everything from Invictas to Breitlings and forms the basis for some very
The Iconic Valjoux 7750 Chronograph Movement: Everything You Need to Know. The most common Swiss chronograph watch movement is both polarizing and a
Its engine, which Montblanc modified and called the MB 25.07, is based on the Valjoux 7750 movement. As a chronograph movement, it displays the minutes sub
Hardly recognizable as such, but still outfitted with a 7750 as a base movement, is the Eterna 6036, which powers the Porsche Design Indicator P''6910. This watch displays the elapsed hours and
3) How quickly can I "swirl" the rotor to avoid damage (I swirl very quickly, approx 2-3 rotations per second) 4) How often can I set the time/date without damaging the movement. The Zigmeister wrote that the crown is connected to the gear train via a "clutch" which can get worn by setting the time on the Asia 7750.
Over six positions, the watch deviated between five seconds slow and two seconds fast, so it wasn''t perfect in all positions, but you can''t argue with an average of zero. This is evidence that, yes, many watches will run off wrist power alone, but winding it via the crown keeps the mainspring tight and the watch running at its optimal
The 7753 does the same things as a 7750 in almost similar ways; it''s a self-winding type with 27 jewels, a ball-bearing mounted unidirectional rotor and beating at 28.800 vph with about 44 hours of power reserve. It can split a second into its 1/8 th part and measures time till 12 hours at a stretch and shows the lapse of 30-minutes at a time.
The same is true for the caliber "7750". The four-digit code stands for the chronograph caliber with coulisse-lever escapement from Valjoux (named after its origin, the Vallée de Joux ). With a power reserve of 42 hours and a frequency of 28,800 vibrations per hour, at first glance, the movement does not knock you off your feet.
Main technical specifications (from Watchbase) Movement: Automatic. Diameter: 30mm. Jewels: 25. Power reserve: 42 hours. Frequency: 28,800 bph (4Hz) Complications: Time (incl. small seconds), Date, Day, Chronograph. The movement below is a clone of the ETA 7750. I disassembled it following the instructions of Eta''s Swisslab online tool.
All watches using the ETA 7750 movement: Full details and images of the ETA caliber 7750, including a list of all watches using this movement.
7750: Calendar Synchronization. Adding a day to the date mechanism doubles the difficulty in setup. March 18, 2018. Novelty: ETA 7751. A break—sort of—from SAWTA prep, featuring my favorite complication. April 04, 2018. SAWTA 4 prep begins before the SAWTA 3 dust has a chance to settle.
Oct 1, 2019. How a young team headed by a 24-year-old Edmond Capt pulled off a technological coup in that resulted in the Valjoux/ETA 7750 that still powers many of today''s automatic chronographs, nearly 50 years
The ETA Valjoux 7750 chronograph movement is well-known in the world of watchmaking for being tough, reliable, and versatile. Since it was first introduced in the early 1970s, it has gained a strong reputation for being accurate and long-lasting, which
7750/7753 movements are fine when they are standard seconds @ 9. They become quite questionable when they add parts to move that running seconds dial from it''s native position. The only other thing to note is proper handling and operation of any 7750 movement, especially with chronos.
Hardly recognizable as such, but still outfitted with a 7750 as a base movement, is the Eterna 6036, which powers the Porsche Design Indicator P''6910. This watch displays the elapsed hours and minutes of the chronograph function with jumping indicators at 3 o''clock combined with a power reserve indicator and running seconds.
ETA 7750 Service Walkthrough. The 7750 was first available in 1974, having been one of the first movements to be designed with the aid of a computer. It''s hard to believe that the 7750 is still the
Listen. 0:00. 5:00. Any watch connoisseur worth their salt knows that the Valjoux 7750—now known as ETA 7750—is probably the most popular automatic chronograph movement of all time. First
Posted August 21, 2011. On 8/20/2011 at 7:16 PM, Jkay said: The Swiss and the Asian 775x movements have 200+ parts in them. As-delivered in a replica watch, you have no guarantee at all that either a Swiss or Asian is clean or oiled. They are probably dirty and dry no matter which you buy.
As Valjoux is now a part of ETA, what used to be the Valjoux 7750 is now the ETA 7750, with the same specs. Technically, only if it''s a 7750 assembled before this merge up is a true Valjoux 7750. Else, simply call it the ETA/Valjoux caliber 7750. That makes the cal 7753 only an ETA movement. We will look at these two venerated
1. While movement is still in plastic case, remove rotor. 2. Place rotor in A&F 7750 movement holder with jewel supports. 3. Fit dial and clamp down with build in dial clamps (new dial so being careful on the first clamp since it will make permanent setting grooves in dial legs) 4.
Craig M. 2582 posts · Joined 2006. #2 · Nov 24, 2009 (Edited) Howdy! The 7750 winds clockwise onlyand needs about 800 TPD. The rotor swinging freely does not effect the mainspring, or movement in any way. Here is a great database on Orbita''s websiteyou can look either by movement manufacturer, or watch brand.
Since its revival, the Valjoux 7750 has gone ahead to become one of the most successful and trustworthy automatic chronograph movement to exist in the market. Pick up any of your favourite
The Longines L688.2 is a column wheel chronograph movement built by ETA and based on the famous Valjoux 7750. The next big evolution of the Valgranges movement was a Co-Axial version for Omega. Fans of that
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