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Found 17 results

  1. Dear all, I recently had the pleasure of finding a damaged hairspring needing care. My first! It’s an inexpensive orient watch, gaining 20 minutes a day. I am taking Mark’s fault finding course, and have other inexpensive hairsprings to practise with. I also got some vintage tools I’d love to use. Until now for me levellers were only the Oliver Cromwell people, but ebay never ceases to surprise... I could pass the first stages of correcting the coil, with two tweezers. But could not find a use for the vintage tools. Could you help me to figure it out? Picture 1 is the bent hairspring picture 2 and 3 the box of tas levellers picture 4 is the hairspring suffering under my tweezers now picture 5 shows the tip of the tools picture 6: from De Carle. Would this be the purpose of the levellers? The overcoil?
  2. Hi all. I have a question about the fragility of hairsprings. I’m completely new to watch repair, and have started by regulating my mechanical watches (Seiko 7S26 and Orient F6922 movements). While adjusting the rate with a wooden dowel oriented parallel to the balance wheel, I have accidentally lightly grazed the hairspring. It was enough pressure to stop the balance wheel, but there appear to be no negative consequences. Both watches keep great time and have good positional accuracy. And according to my timegrapher the beat error and amplitude were not affected. So should I just chalk this up to good luck? Or could there be lurking damage I’m not seeing?
  3. While disassembling a Unitas 6497 (or during subsequent reassembly) I slightly deformed the hairspring, and to fix it I removed the wheel from the balance cock and then the hairspring from the wheel. The balance cock is of the Etachron type, so the index pin is simply clipped into the stud support. The spring sits inside a notch on the underside of the pin, and is secured in place with some sort of gummy, flexible adhesive (instead of a tiny pin, as I've seen elsewhere). Anyway, I had a lot of trouble getting the spring stud back into the stud support, and after about an hour of man-handling the glue finally gave out and the spring came loose. Now I have a spring (in perfect condition, thank you very much!) and stud I need to reattach to each other. What kind of adhesive is this? What are some accepted ways of reattaching the spring? I saw someone on the internet use shellac, but 1) I don't think that was the correct thing to do (this stuff was flexible, and probably for a reason) and 2) I don't have shellac or know how to use it regardless. Thanks for reading, and thanks for any help you can offer! Here are some pictures to help visualize what I'm talking about:
  4. Hi all, I’m a new member and new to this ‘hobby’. This site seems to be where it’s happening. my very first attempt is with a BFG 866 which I have stripped cleaned and rebuilt. Not applied any oils or greases yet as I plan to do this a few times. However... I have noticed that the hairspring has come detached from the ‘cock’ plate? I cannot see nor find how this is reattached... is this broken? Any guidance is much appreciated. Thanks, Marc
  5. Hey, I'm on the lookout for a Hairpsring for a Hamilton cal 770. I've managed to find out that it's a Breguet made from Elinvar but that's about it. Does anybody know the parts number? If you also know where to get hold of one it would be very appreciated. Thanks! /A
  6. I received a lys Longines 5L for cleaning. Upon opening the case, I saw some surprises under the balance bridge. I have outlined my steps on how I uncoil a tangled hairspring in hopes that others can benefit by this method. George Corder IMG_0505.m4v
  7. Is there a 'golden rule' relating to relocating a hairspring onto a balance staff with regards to getting zero beat error after it has been removed for attention. I usually take pics or use marker pen but sometime forget!
  8. I need help with removing and then putting back in a hairspring that has a friction fit stud. I know there is a special tool one can use for this purpose. Does anyone have any pictures and know who might have made it? Can anyone "walk me through" how to remove and replace a hairspring without using the tool? Thanks!
  9. I have a few old Vostok 24xx movements which seem perfectly fine except the the hairsprings are ruined. Most of these movements have come from eBay sold as “for parts or service”. So, my plan is to buy a few new balance wheels complete with hairsprings (like these) and replace them. (I just haven't got the tools or skills to just replace the hairspring). I have a pretty good idea about how to remove the hairspring stud (like this, or is there a better/easier way?), but how do I remove and re-fit the hairspring from the regulator arm? Can it just be lifted off and re-fitted with a tweezers, or do I need some special tool or procedure for this operation? I haven’t seen any instructions or videos about this, perhaps because it’s so easy or obvious? Well, at least that’s what I’m hoping!
  10. Hello! So I was trying to work on the HS, like so I took a coaster from Ikea: and spare 1mm screwdriver blade and 2 pins: and I got:
  11. Help please anyone. Having trouble getting a hairspring for the Rolex calibre 59. FHF30/ 30-1 is the base model but I cant find any listings. Is there another movement spring that is the same? Peter
  12. Hello, I got this vintage medana pocket watch with MST 12 movement. When I opened them I saw broken hairspring. What should I do ? I´m very new to these watches, I need some help/advice.
  13. I think I have the kit to do this but how do I go about finding the right size staff to replace the broken one?
  14. First, thank you all for your help. I’ve been reading several posts that have helped me since I first joined several weeks ago. I’ve been very fortunately the last year or so learning watch repair as a hobby. It’s been very rewarding and fun (as all of you know :P) A few months ago, I drunk bid, and won, this Zodiac Seawolf on eBay. It was supposedly running and then stopping after a short while (which was true). However, during disassembly I found it was missing the case tabs, hacking/stop lever, and most of the date mechanism parts. I was able to get it appart, cleaned, and luckily with a donor Aerospace GMT for the date parts, was able to get it back together and running. I put the balance in and the hairspring adjusted, I put the automatic winding mechanism on and the watch went completely out of adjustment. After removing the auto winding mechanism, I noticed that the hairspring was touching itself. So I removed the balance, made sure the hairspring was back in position, reinstalled it adjusted it, and after putting the auto parts back on it was running ok. Then I cased it, and again it went completely out of adjustment. I’ve been through this exercise several times now, and even tried with the balance from the Aerospace GMT donor I have with the same results. The last time, I tried to check that the rotor wasn’t hitting the balance, and it doesn’t appear that it is (at least I can’t see where it would be). I’ve demagnitized the movement and case several times too. I’m still missing the stop lever and one of the case tabs, but I wouldn’t think either of those would cause this kind of havoic on the balance. Does anyone have any guidance on what to look for which might be causing my balance(s) to go wonky? Below are pics. Original balance in: Everything looks ok and adjusted (not great but ok): Auto on: Everything still looks ok: Just about to case it and then decided to check one more time and hairspring look ok from what I can see. WOW Look at that shotgun scatter pattern: And it’s wonky again :pulling-hair-out:
  15. Here's picture of a WWII vintage chronograph I obtained c.1975. I think I paid $35 for it then--certainly less than $50. I actually wore it as a daily watch for many years. Then it started to run erratically so I put it in a drawer and let it "sleep" for about 10 years. In the late 90's I took it to a watchmaker in Chicago who said it could be restored, but it would cost! Even then something inside me--akin to a doctor's impulse to heal--wanted this watch to live. Besides, it has a nice rose gold case with the inscription "To Sid from Hank 1945 - 1946" on the back. So I let him do the work. It keeps great time. I'm not familiar with the Perfecta brand and I don't know who made the movement (anyone know about them?). The dial and hands are original. Please forgive the background! But part of the appeal of watchmaking is the theory behind horology. I've been working on the hairspring starting from a paper by S. Goudsmit and Ming-Chen Wan, Introduction to the Problem of the Isochronous Hairspring in the Journal of Applied Physics (December 1940). I tried working out the physics myself but without much success. The physics of the Archimedes Spiral is--one might say--non-trivial. There is at least one recent book out there which purports to work out the theory but it's really expensive. I also have Charles Edgar Fritts book, The Balance Spring. It's very complete and has a lot of practical information but its kind of densely written--requiring a lot of close study--but no mathematics. Moreover it requires an understanding of some of its figures and I've never been good at (actually patient with) drawings, especially 19th century drawings. (Can anyone explain to me Fig. 4?) I'm fascinated with the idea of building a computer program that would locate graphically the point where a hairspring could be vibrated. My impression is that experienced watchmakers can often get very close by visual inspection, but for beginners like myself it would be very helpful if we could see such points for a lot of different hairsprings. So, I've been using Mathematica along with its graphical processing functions to work from pictures of hairsprings. Once I know the spring constant it should be possible, using the physics of the spiral, to work out such points mathematically--numerically, at least. It goes like this: first, take a picture of your hairspring against a background of some standard hue. Then use graphical processing to pull out the pixels of the hairspring, assign them coordinates, fitting them to a mathematical spiral and use the theory to locate the vibration point, which can then be plotted on the same picture. That's the plan anyway but it may not be possible for reasons I haven't yet understood.
  16. Another excellent video produced by the Litiz Watch Technicum on adjusting a hairspring correctly. Very video on their YT Channel is worth watching, and this latest one is no exception. https://www.youtube.com/watch?v=4EYk787sjAM
  17. I have uploaded a second vid on Hairspring manipulation - this time the hairspring is twisted up and down. View here!
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