Caliber 7750: X-ray of a legend

All things Swiss

Caliber 7750: X-ray of a legend

Postby koimaster » August 17th 2017, 9:55am

These are generally the first figures that one learns during his watch classes: 7750 , to pronounce 77-50. The reference to this chronograph is so widespread that it becomes familiar, like a distant cousin never met, but of which one hears so much talk that one has the impression of knowing it!


In truth, the history of the 7750 caliber is so long and rich that it is difficult to grasp in one piece. Starting with its name: ETA 7750 or Valjoux 7750 ?



Historical Resistance





Historically, both names are correct. Ebauches SA , former name of Valjoux, joined a larger company in 1931, ASUAG. The latter will be merged with the SMH (Swiss Society of Microelectronics and Watchmaking SA) and the renamed The Swatch Group in 1998. In summary, Valjoux is a war treasure of the group.




The 7750 is certainly its most well known caliber , because one of the most diffused and most reliable. He is also credited with the so-called " tractor " watchmaker , which, like the Rolex , is characterized by basic movements but with exceptional longevity . The 7750 had been designed with this in mind, bringing together only 240 components when it was created in 1974. It was 10% less than its competitor El Primero . To reduce its cost, ETA has also reduced the frequency, with two versions at 21,600 and 28,800 vibrations per hour , when El Primero was only available for 36,000 alternations .


Valjoux will go even further in the economy, proposing three years after its creation the 7755 (without indication of the day) and 7765 , manual version of the 7755. The quartz crisis, which will take many calibres, will spare the 7750 Become inescapable.

http://www.leguidedesmontres.com/fr/act ... ne-legende

Caliber 7750.pdf
You do not have the required permissions to view the files attached to this post.
Image

1946-2006

“Your heart was warm and happy

With the lilt of Irish laughter

Every day and in every way

Now forever and ever after."
User avatar
koimaster
Administrator/Founder
 
Posts: 31810
Joined: December 16th 2009, 11:00pm
Location: Oregon

Re: Caliber 7750: X-ray of a legend

Postby PiningforElgin » August 18th 2017, 7:59am

koimaster wrote:These are generally the first figures that one learns during his watch classes: 7750 , to pronounce 77-50.


Good to know. I used to say "Seven Seven Fifty" - close enough but incorrect :D
User avatar
PiningforElgin
Member
 
Posts: 267
Joined: July 2nd 2017, 11:41am

Re: Caliber 7750: X-ray of a legend

Postby foghorn » August 18th 2017, 8:04am

I thought it was Seven Seventy Five-naught
GET OFF MY LAWN
Image
User avatar
foghorn
Founding Member
 
Posts: 14896
Joined: December 18th 2009, 11:00pm

Re: Caliber 7750: X-ray of a legend

Postby TemerityB » August 18th 2017, 2:34pm

A great workhorse movement; people who rank on it don't wanna pay the nut for it. Yeah, I said it.
Cheapjack Horology Impossible To Disprove Drizzling BS O' The Week:
"I've been a fan of this company, these watches, for many, many years." - Skip Connelly on Glycine
User avatar
TemerityB
ASSHAT
 
Posts: 12777
Joined: June 12th 2010, 10:00pm
Location: New York City


Return to Swiss Watches

Who is online

Users browsing this forum: No registered users and 4 guests