Is the Valjoux 7750 a good movement?
The Valjoux 7750 is one of the most favoured chronograph movements in the timepiece industry. In fact, a lot of people claim that it is the best in its category. With that said, most famous brands nowadays use this movement to power their watches. A few of those brands include Hamilton, IWC, and even TAG Heuer.
What is a 7750 movement?
The 7750 is mono-directional (only winds in one direction), and so has a relatively large and heavy oscillating weight that can reach high speeds when rotating in its non-winding direction. Because it free-spins in one direction, you can sometimes feel the movement “wobbling” on your wrist.
Did Rolex use Valjoux 7750?
Of this the Valjoux 7750 is a perfect example. Whilst we praise the movements used in icons such as the Omega Speedmaster, Rolex Daytona or Zenith El Primero, the vast majority of mechanical chronographs in this industry use the Valjoux 7750.
Is ETA 7750 column wheel?
But it’s true! Over the last decade, the lowly 7750 has been modified to include a column wheel for haute horology companies like Panerai, Hublot, Longines, and Omega.
Is valjoux 7750 COSC?
Many watch enthusiasts have dismissed the 7750 as a cheap, generic movement. However, when properly tuned in, the 7750 meets COSC Chronometer standards, and is found in many quality watch brands, such as TAG Heuer. The 7750 has an automatic, self-winding module that’s attached to the top of the movement.
What is a Valjoux movement?
Valjoux (for Vallée de Joux, “Joux Valley”) is a Swiss manufacturer of mechanical watch movements. It is known primarily for chronograph ébauche movements that are used in a number of mid- to high-range mechanical watches.
Is Valjoux 7750 COSC?
Is valjoux 7750 vertical clutch?
You can strip down a Valjoux 7750 or build it up L01, which in itself was based on the 7750, and equipped it with a column wheel, vertical clutch, oscillating pinion, and a self-adjusting. two-armed reset hammer to create Longines Caliber L688.
What is a valjoux movement?
What is power reserve of Valjoux 7750?
ETA/Valjoux Caliber 7750
| Brand | ETA / Valjoux |
|---|---|
| Power Reserve | ~48 hours |
| Lift Angle | 49 degrees |
| Vibrations Per Hour | 28,800 (4 Hz) – early models were 21,600 |
| Shock System | Incabloc |
How do you wind a valjoux 7750?
To set the time, pull the Winding Crown (1) out into position -2- and turn the Winding Crown counter-clockwise (CCW). Keep turing the Winding Crown until the hands pass midnight and the day/date display advances. Then continue to turn the Winding Crown until you set the correct time.
What is valjoux movement?
Valjoux (for Vallée de Joux, “Joux Valley”) is a Swiss manufacturer of mechanical watch movements. It is known primarily for chronograph ébauche movements that are used in a number of mid- to high-range mechanical watches. The company is a part of ETA, and is a member of the Swatch Group.
What made the 7750 so different?
What made the 7750 so different was that its operating system didn’t rely on column wheels, but rather on levers to operate the different functions of the chronograph using an oblong-shaped cam. This resulted in a reliable chronograph that could be mass produced much easier than its column wheel-operated cousins.
What is a 7750 watch movement?
First of all, the 7750 is a mechanical, manual-wind movement that uses a three-plane cam system to operate its mechanisms. The standard 7750 has subdials at the 6, 9, and 12 o’clock positions. The original Valjoux 7750 units contained 17 jewels, while most modern ETA 7750 variants hold 25 jewels, which allows for less wear and tear.
Where are 7750 movements made?
Sellita has the SW500 which is based on the 7750 and some of the Chinese companies are producing Chinese 7750 movements, for example the Shanghai 3LZF2. Pictured below is an image of a paper instruction manual for an ETA 7750 from 8-2-2005.
What are the features of an ETA 7750?
Distinguishing features of the ETA 7750 family include a smaller balance wheel than many historic movements and a small rotor hub with a slotted screw and five visible bearings. The balance is located at 1:30 when viewed from the back with the crown at 9:00, and is located by a clockwise cock.