I have a flash shortcut to ETA labs 7750 calibre that showed assembly dis-assembly. It no longer works due to Adobe flash reaching EOL status. I visited ETA labs web site to see if there was an alternative and lo and behold no access to anything technical at all. Does anyone know how to get access to what we use to have access to? Looks like protectionism has escalated.
I'm new here and into watch/horology world as well. I recently tried to replace the dial on my 7750 watch.
1) Open the wathc case
2) removed rotor
3) removed stem (gentle push of remove stem pusher and pull the stem out)
4) removed the movement from the case
5) put movment to movement holder
6) removed hands
7) removed dial
8) put new dial
9) pressed the hands back, hovewer during setting it up I realized the movement is not running - even when I wind it up - it is solid/stable and not ticking at all..
Kind of out of ideas what can went wrong, the movement was functional correctly before..
Thank you for any ideas.
Hi guys! I have a watch that uses a Ronda 751 quartz movement (see pic). For those unfamiliar, it’s a small tonneau shaped movement - usually a woman’s size (5½ x 6¾ linge and 2.5mm thick) with the following specs:
Linge Size: 5½ x 6¾, 2.50mm thick
Hand Size: 120/70
Cell/Battery/Power Source: 379
Tap Size: 10 I’d like to replace it with a mechanical movement: I started off looking for a direct drop in replacement but it’s proved very difficult. I haven’t found any modern movements with the same dimensions (although to be fair I haven’t had much luck finding a comprehensive listing of modern movements available). As far as the vintage movements go, (from here: http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk) the ETA 2480 (http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&ETA_2482) is a good example of the vast majority of what’s available— the right dimensions but 1mm too thick. And for a 2.5mm movement, 1mm is a ton. The Tissot 530 (http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Tissot_530), and Enicar 672/678 (http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Enicar_672) are the 2 that seem closest but they are still a half mil too thick. And worse, even if it fits, where would I even begin looking for one? Does anyone one have any knowledge of a movement that would work or one I could modify a bit to fit? Or any idea the best place to look?? Thanks in advance for the help and I love the forum!!
I'm having some unexpected behaviour from a eta 7750 that I'm trying to regulate after servicing.
I went through service procedure using correct lubricants.
Everything went fine. Actually I have some doubt on lubrication of incabloc wich I'm not sure I did correctly since I'm afraid that too much oil was placed in one of the two stones.
The fact is that when I finished I wasn't brave enough to clean and lubricate it again ... shame on me but I felt that task to be very very difficult.
Anyway after reassembling the watch I had it at my wrist for a week and it showed a great consistency at -10 sec a day.
It'a stop grade movement and resting at night in DU, DD 9UP and 3UP positions always showed something between -14 -6
I was very happy with that result and I thought that a little regulation would have brought it to a very fine time keeping.
Then I reopened the caseback and slightly moved etachron arm, that was resting in a nearly neutral position, in the + direction.
Nothing happened (measuring with timegrapher open source app)
Did it again, another slight push.
? ok I must have gone the wrong direction, then pushed all the way toward -
Ok this is annoying, all the way toward +
here I am,
what I'm I missing?
How come moving the regulator arm from - to + does not make any variation?
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Hi I got this watch in a job lot but I’ve been unable to identify the movement. The only numbers are 411.7 on the plate and 7 under the balance. I like the look of the watch so would like to repair it. Any help identifying the movement would be appreciated. An opinion on the dial would also be appreciated, the crown and lettering look ok to me but I’m certainly no expert. There are service dates on the dial and case but I can only really make out one which is in 1944. thanks
Its looking like the bike I rode to work on in the 60s although mine had straight bars and mudguards, needed them in the UK, Like the tires though Just finishes the look. Saddle looks comfy not like the razor blades of today, Nice that the sturmey archer is working good Had some sore parts when they slipped up hill, Is the paint work original as it looks in good nick.