- 0
-
Similar Content
-
By Mickeycz
Hello,
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.
Mickey
-
By Calvin
Hello guys..
I wanna ask..
How to adjust my eta valjoux 7750 movement to be faster..
Cause it slow 2-3 minute a day..
Do i just need to move this part to the (+) sign?? Thankyouu
-
By RJC87
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
Stem: 401-1237
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!!
-
By Giuseppe
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.
Nothing
? ok I must have gone the wrong direction, then pushed all the way toward -
Nothing happened.
Ok this is annoying, all the way toward +
nothing
here I am,
what I'm I missing?
How come moving the regulator arm from - to + does not make any variation?
I'm lost
-
By Giuseppe
Hi,
in order to buy appropriate spares in my attempt to service an Omega 175.0083 (7750) I need some advice:
1.
I've already been suggested to replace MS:
Barrel is Ok and I'm thinking of buying a new MS and moebius 8217 for barrel lubricating as I don't want to spend money on recommended Kluber 125 grease.
Should I consider instead buying a barrel complete (assuming Barrel complete (180.1) comes with MS installed) wich supposedly comes prelubricated ?
2.
Attached image shows automatic device bridge with evident sign of wear from where, to my understanding, the problem orginated: a screw came off
I cant find original part.
ETA part is different from Omega in that the Omega is larger and partially covers hammer two function and the chronograph cam.
Beside that and since the watch has no crystal back case I think those parts are perfectly interchangeable.
Do I need to replace the bridge or are there alternative aproaches to this problem?
TIA
Giuseppe
-
-
Recently Browsing
No registered users viewing this page.
-
Topics
-
Posts
-
By MechanicMike · Posted
Happy to report, one is on the way. Getting new toys is part of the fun😊 -
Option 2 is tricky, but doable using silicone grease and a small flat screwdriver with dull tip & tweezers. You may even use some electric tape between o-ring and the blade while pushing the o-ring to prevent damaging it. You may also search here for a new waterproof crown: https://www.cousinsuk.com/category/waterproof-watch-crowns I wish you luck and hope you will work something out. I am going to spend less time on this forum as I need to concentrate on some interesting and time-consuming current projects with vintage watches (jewels replacement, new balance staffs, etc). TIME for a break :-).
-
By LittleWatchShop · Posted
After a little research...made by Patek Philippe for Tiffany. It is in beautiful condition. I recall my dad having great respect for Patek Philippe. I think they are credited with make the most complex mechanical watch of all time. -
Same as the lume, it'll suspend in the gap. Although since you're repainting anyway, what about a different lume colour there? I think they have lume that looks black in daylight . Not as bright as regular but still, nice touch
-
I had a similar situation, but it ended up being easier ordering a new crown than finding the correct o-ring and reassembling. Still have the old crown though, might get around to it 😉
-
Question
Displacement 0
Hello WRT! Glad to have found your site, the resources here are incredible for a beginning hobbyist like myself.
I purchased a project LeJour 7000 (Valjoux 7750 powered) that is currently running hilariously fast- something like +2 hours per day. I purchased it with the intent to drop in a modern, more decorated 7750.
The LeJour has a Day/Date dial (Seen here) but I've found a date-only 7750 that would fit the bill. Is it possible to use this movement and just add the day wheel from my current movement? Is the underlying hardware all there?
Even better, what is the best way to research the parts necessary to do the conversion?
Thanks all!
Link to post
Share on other sites
8 answers to this question
Recommended Posts