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jguitron

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jguitron last won the day on March 3

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About jguitron

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  1. jguitron

    My Rolex Precision Date Cant Change

    Thats what I’m thinking... the teeth broke off. Can be many different things including the setting mechanism like the yoke or other elements may have become uncoupled. But the fact that the date doesn’t change either by quickest nor by advancing the time tells me it’s something at the calendar side. Makes sense? Hopefully it’s something that can be adjusted though! [emoji1317] Sent from my iPhone using Tapatalk
  2. jguitron

    My Rolex Precision Date Cant Change

    There’s a significant chance that the wheel that flips the date broke off. This requires a trip to your watchmaker for sure. Good luck. Sent from my iPhone using Tapatalk
  3. jguitron

    Oris TT1 7750 Question

    I wonder if the yoke got displaced somehow and that's the snap and recoil you're fighting when pulling on the stem. Would not leave like that. Good news is that your readings look excellent and to get to your setting parts you don't have to deassamble the back part. Once dial and calendar off you should be able to visualize the grinding and recoil and how to adjust it. Good luck.
  4. jguitron

    How to make brushed steel

    220 grit sandpaper will give you that finish Long strokes along the entire part is important to have regular appearance. Caution! You have elements of high polish finish. Either you’ll have to convert all to brushed finish or you’ll have to protect the black polish with tape. It gets complicated if you have multiple finishes. Be careful. Sent from my iPhone using Tapatalk
  5. The chronograph wheel is dirty or damaged. It has a clutch that is engraved and disengaged. When engaged it seems that it’s getting caught. Sent from my iPhone using Tapatalk
  6. jguitron

    Some new acquisitions!

    Super nice!!! Congratulations!! [emoji322] Sent from my iPhone using Tapatalk
  7. Many times it’s just a matter of gently propping the spring towards the collapsed side. [emoji1320] Sent from my iPhone using Tapatalk
  8. That’s one of the reasons IMHO that mechanical watches are fascinating. You’re wearing a machine that carries quite a mystique with it and has us wondering the effects of sleeping dial up or down, increasing or decreasing wear, etc. That’s how we develop our tight relationships with our watches! In this particular case, yes. The side on which the watch runs slower does so because of increased friction. There will be a difference in performance in just about every position the watch is placed. That’s why there are standards that set which positions are considered when regulating a watch. The most basic one is 3-positions which is dial up, down and crown left (typical position when working at a desk). This means the watchmaker will make sure that the amplitude, best error and rate will remain within certain range on all those 3 positions. Then there are higher grade certifications like COSC that require the regulation to be done on 5-positions and even further, like Omega, does so in 6 positions and different temperatures. Bottom line is that our watches are never in the exact position twice while we wear them, so the ultimate way of testing a watch is on the “wrist simulator”. This is like a winder at certain speed of rotation. This truly puts the watch in all possible positions and over 24-48 hrs the watchmaker can ensure that your watch will be as exact as possible. My suggestion in general, once you notice that your watch is misbehaving such a losing time on one position, it’s best to service it to avoid unnecessary wear and tear. Welcome to the horological rabbit hole! Sent from my iPhone using Tapatalk
  9. jguitron

    Mainsprings

    There’s a specific plier to curve mainsprings. It should be able to correct the problem albeit not cheaply. Good luck! Sent from my iPhone using Tapatalk
  10. jguitron

    Tension v non tension crystals

    I agree. The claw is ideal for non-waterproof crystals that have a a nice tall side wall for the claw to have a good purchase. Those crystals are thinner and easier to compress, mostly I. Dress watches of chronos. I can’t see how the claw could compress a thick water-proof crystal enough to fit in the case. The press is definitely the way to go. Now there are presses and there are presses! The cheaper you go, the less they pushers align and the higher the risk of cracking crystals. Cheers! Sent from my iPhone using Tapatalk
  11. jguitron

    Seiko 6139B assembly help please

    Quick observation, Your second vid doesn’t show a smooth train wheel movement. In fact it stops abruptly and I see you giving the barrel a little push for it to get going again only to stop abruptly again. Without the fork, the train should run continuously until mainspring is totally relaxed and the escape wheel slows to a soft stop. I suspect you have something impeding smooth function. Lint, debris, etc Another quick thought... we all like to have a little power on the mainspring to see the balance wheel spring into action and make us feel like the masters of the universe! But engaging the impulse pin into the fork can be challenging particularly with power on. I suggest to release power completely, place the balance and wound. That’s worked for me several times. Good luck!! Sent from my iPhone using Tapatalk
  12. Need way more info than that. A pic speaks 1000 words. Sent from my iPhone using Tapatalk
  13. Sure! I’m not familiar with that solution but it’s formally a cleaning solution. Pegging is a good idea although it doesn’t come without a big discussion that can be found in other rooms... Now, that’s great for pivots and jewels but pinions and wheels may still retain some residue. Sent from my iPhone using Tapatalk
  14. Good job... that’s how one gets started. Obviously it’s not cost-effective but keep at it and it will eventually. My first observation is the cleaner used to wash the movement. There are multiple sources that show how using lighter fluid can really hurt you. Even if you don’t notice it, it may be leaving some residue, and if this is the case here and there, this could partly explain why your gear train has uneven resistance and thus the amplitude and rate vary so much. Add to that the out of poise mainspring, and the wild variations start to make more sense. Not oiling properly before timing is not a good idea but even then, I wouldn’t expect the significant variations you’re obtaining. Something to think about. It’s a good idea to let it run 24 hrs before doing more definitive timing measurements. The demag is a big deal. It should be the very first step before you even touch the movement. You should time the watch first thing, demag retime and then overhaul. Looking forwards following on your progress. Keep it up! Cheers! Sent from my iPhone using Tapatalk
  15. jguitron

    Metal watchmaker bench

    Super nice!! Where was that??? Sent from my iPhone using Tapatalk
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