sneed12

No one has ever torn one of these down before?

A friend of mine asked me to look at his watch; he sent it into Citizen a few years ago for warranty work and it came back with the internal bezel slightly misaligned. It doesn't look as though the bezel/crystal assembly comes off from the front, Rolex-style. It looks like the crystal is a press-in and I need to access it from the back. I can get the regular stem out no problem (there's a hole with "PUSH" engraved next to it) but I can't seem to find a release for the secondary (alarm) stem. Anyone know where the release is? I don't want to start unscrewing anything else until I know what I'm doing. (In both photos, the primary stem release is a hole near the leftmost brass screw, almost overlapping. The black round thing on the right, near the "S" of "JEWELS" is not a hole or button and does not appear to be the release.)

For that I'd need lessons from you. It takes serious arrogance to tell someone with a PhD in particle physics flat out to their face that they're wrong about how the Van Allen belts work. The fact that I dismiss you as an ignorant twit is not evidence of what you claim here, because you are in fact an ignorant twit. I've seen quite a bit of the world, less than some but more than most, as a Marine and later as a scientist and now in my current job (I'm a management consultant, I travel quite a bit). I've met thousands of people of all kinds, from all walks of life. None of them were as aggressively stupid as you are. PhD graduates in the US graduate under a tam, not a mortarboard. That's not at all true -- PhDs have been using the title "Doctor" for over a thousand years, while it only came to the medical profession in the last 150 or so. It would be inappropriate for a non-medical doctor to insist on being addressed as "Doctor" in a clinical setting, but in any other setting "Doctor" is both correct and appropriate as an honorific for someone with a PhD. (Not that I insist on it, I prefer to be called by my first name.) I'm no longer a researcher -- I work for one of the world's top consulting firms. I travel quite a bit, and I actually stay in quite nice hotels. This is, once again, demonstrably false. The particle physics of how the Van Allen belts work is not remotely related to anything having to do with 9/11 whatsoever. They are completely separate subjects and the only common thread is your refusal to admit that you're wrong.

That makes no sense. The two are utterly unrelated. Also, that's "Dr. Arrogant" to you. You were the one who challenged my credential. I would not have posted any details had you not suggested I was lying about having a PhD (in particle physics, from a prestigious R1 university...)

Once again, this is incorrect. Again, I'm a particle physicist, this is what I literally spent years of my life studying. Passing through the Van Allen belts is a serious but entirely solvable issue. The Van Allen belt's radiation is massive, so it's a type that's easily shielded against. The Apollo missions traveled through the thinnest part (they span roughly 20 degrees north and south of the equator) and traversed quickly. The astronauts received a very small dose of radiation -- far less than what a Space Shuttle or ISS crew receives, or what the Gemini crews received. Just like the 9/11 idiocy, every stupid question you'll spout off about regarding the moon landing has a simple answer.

Once again, you have absolutely no idea what you're talking about. This not only doesn't make sense, it has nothing to do with what I posted. I finished my PhD in 2012, this thesis was written then, not "inside 2 years of qualifying". It represents 6+ years of work. I was 30 when I finished my PhD, which is a pretty normal age and not "late in life" for a PhD at all (at least in the US -- the UK has a different system, PhDs only take 3 years there). As for being real... I've posted photographs of my degree and my thesis. Here's a proof of the snap the photographers tried to sell me when I got hooded A pic of me in my CERN days (I no longer work there) And, just to prove that very average looking Asian dude is me, here's a pic of me holding a sign saying "Ipcress is an ignorant twit" I have a PhD. I'm baffled by why you'd think I would lie about it. Having a PhD doesn't get you much of anything (I do go by "Doctor" in hotels, I've found it gets me better service, but that's about it). You've been as shockingly wrong about pretty much every aspect of what a PhD is (I still find it hilarious that you think a PhD has a "cert number") as you are about everything else. Own up to being an idiot and move on. You're embarrassing yourself.

They are, frankly, dumb questions. They're a mix of incorrect assertions (like the stuff about the seismographs: there absolutely were seismographic readings of the collapsing towers) and questions with obvious answers (WTC7 was hit by debris and burned out-of-control for hours before collapsing) and flat-out lies (the buildings weren't "pulverized", they collapsed). This is the thing that truthers never seem to understand: being able to spout a million questions doesn't mean you've found a "hole" in the "official story." What it means is that reality is complicated. If you want real answers to all of those questions, they are all out there -- but you don't want answers, you just want to ask questions as though that means something. Some questions are just dumb questions. People refusing or ignoring your questions doesn't mean you've "caught" them it just means they don't feel like dealing with your idiocy.

1) Yes, my PhD says "Evanston" Illinois... as that's where Northwestern University is located. "Northwestern University is a private research university with campuses in Evanston and Chicago in Illinois, United States. Wikipedia " 2) You assert that I lifted pictures off the internet... yet it's clear from the picture that I physically had the degree with me. 3) If you were to look for pictures of Northwestern PhDs on the internet, it would become clear quickly that my degree is an authentic one. 4) If you think someone with a PhD is less likely to insult you, you must not have ever met anyone with a PhD in real life. Having a PhD doesn't make a person any nicer, if anything PhD holders tend to be more prickly and far less tolerant of blatant idiocy like the kind you are displaying right now. (And also, as someone with a PhD in physics... no one would pretend to have a PhD in physics. Physicists aren't that cool. If you're going to lie about what you do, you're going to be an astronaut or a Navy SEAL, not a physicist.) 5) Speaking of your idiocy, you demand to know what university I graduated from and the date. You know those are printed right on the degree, yes? They're literally right there in the picture. 6) PhDs do not have a "cert number." They are not a professional qualification, it's not like a PE license or a bar card. If you need to prove that you have a PhD (for a new job or whatnot) it's customary to submit academic transcripts. 7) As for my thesis, it was about the flavor-changing neutral current interaction. I'm a particle physicist. My academic institution was Northwestern, but I actually did my research at CERN, I worked at the LHC. I happen to have a copy at my desk, in fact If you want to look even more stupid, I can dig up some pictures later of me at CERN and me getting hooded. Don't have time right at the moment. The planes were hijacked at altitude. They came down from that altitude. Therefore, they were high up in the sky and then came down. Do you need me to draw you a picture? The fact that they were in straight and nearly level flight for the last few miles doesn't mean they didn't come down from high up. And we've reached the end of the rabbit hole -- you can't logically refute what I'm saying, so you accuse me of being a "DisinfoOp" (a word which I'd never heard until today, but whose meaning seems clear from context). I guess you've "uncovered" the "truth". I'll go back to running the X-files now.

No, it's not. Vne is a number (well, it's a number as a function of altitude at any rate). It's an arbitrary line drawn across the flight envelope. If an airplane is going 1 knot below Vne, it's within the envelope. Going 2 knots faster puts it 1 knot outside the envelope. This does not cause the airplane to explode, or the wings to rip off, or any other nonsense. That's not how structural failure works. Vne can be and has been exceeded without catastrophic damage. An aircraft that exceeds Vne MAY experience immediate catastrophic structural failure (Egyptair 990 for example), but it doesn't automatically break into a million pieces. Nor is that how air resistance works. And those speeds are easily achievable at low altitudes by 767s -- those planes were descending from altitude. Height = energy = speed. A 767 can't accelerate to that speed at that altitude in level flight, but it can certainly achieve that speed in a shallow dive. Simple physics. Among the other things you know absolutely nothing about, a PhD is not "numbered" nor does it have a "cert. number" or an "issuing signature". Take a look: If he's a REAL pilot I guess he has one of these I used to be a demo guy in the Marine Corps (well, technically I was an 0351, not EOD or combat engineers, but we did a lot of demo). I have seen pieces of plywood punch through sheet metal and glass marbles go through concrete. Aluminum will cut steel and concrete when it's traveling at a relative speed of 800 mph, no problem at all. Simple physics. Congratulations, you're an idiot. I'm not even talking about the 9/11 thing now -- you don't understand basic physics like "when airplanes come down from high up they can go fast." You display a shocking lack of ability to reason.

That's simply not true. Yes, it's outside the certified flight envelope, but airplanes don't magically explode when they exceed Vmax. ( I have both a PhD in physics and a pilot's license.)

So you swapped the fourth wheel, which carries the seconds hand, by removing the train bridge on the back side of the movement? And now when you wind the watch, all the hands spin very quickly? If so, then the escape wheel is not engaging the pallet fork, and the mainspring is discharging through the gear train without being stopped. You need to find out why. Something didn't go together correctly when you reinstalled the bridge.

Well, tell him I'll bet him everything he owns that I can tell the difference by looking, in good light. "Jerkiness" has as much to do with lash in the gear train as it does with beat rate.

No, it absolutely does not. If you try to snap a ceramic insert in (or out) you'll break it. It's true that it's pressure-fit, but not true that it snaps in.

I did a build of a blue sub-C on the BP case about a year ago (before BP started offering the blue model) here's a pic of everything torn down Your bezel assembly, gasket, and retaining ring are all stuck together. It's not uncommon to have everything come off together with a gen either.

This is how the gen is designed. None of us can make you believe this is the case, but it's true. The retaining ring and crystal gasket are still inside the bezel assembly (the "bezel" itself is just the part with the teeth). I don't see any "disaster" here: you have a $25 repair you need to make, replacing the rep crown with a TC crown and tube which is more accurate anyway. Fix the watch and enjoy it.

I also use the plastic bag trick for things like this, and clutch / date jumper springs for a 7750.

Genuine ETA parts will fit. I just did this repair, ETA replacement part fit with no issues. I think have one somewhere if you're looking for one.

The newer generation of 2836 GMTs with the spring-loaded GMT wheel seem much more reliable, I've never seen one slip. @ the OP: no offense, but are you sure you know how the GMT is supposed to work?

Failure of the hour counter lock on any 7750 (Swiss or Asian) is a pretty common problem, and easily fixed when you have the movement apart (take off the calendar plate, reset or replace the brake, and reassemble). It does require a full disassembly, however.

Yes, the stock 7750 has symmetric pushers. So what? Rep Daytonas with 7750s (and ST19s) have had asymmetric pusher configurations for years, it's not complicated.

Looking for a rep (or gen if you happen to know of one for sale in good condition) of this dial Blue, triangle dial with or without date. Anyone have an idea where I could get one? Yuki's website doesn't list it, and the usual suspects (ingod, mahand) don't really seem to list their wares anyplace. Thanks

The other thing to watch out for is that on a 2824, the DWO can drag on the top of the movement. A 2836 has a datewheel which is slightly raised.

When you start the chrono in a 7750, two things happen: 1) the tilting pinion moves over and engages the center sweep seconds hand 2) the brake that stops the hour totalizer from rotating is disengaged The tilting pinion is always rotating, so starting the chrono doesn't make it wear any "more". The hour totalizer clutch is slipping when the chrono is NOT running, so arguably when the chrono is running the wear is less.

Unfortunately, and with full knowledge that it makes me look like an [censored] sometimes, I have difficulty allowing people to believe things that are false. Again, no. The statement I responded to is quoted below: You could argue that the 2892 was "not made as a GMT movement" either. Adding the GMT functionality to make it a 2893-2 is done by adding more parts to the top side of the dial. Those parts work in exactly the same way that the 2836 with GMT modification works. If ETA were to build a GMT movement based on the 2836-2, they'd probably do it exactly the same way that the Chinese factories have done it. I at no time argued that the parts made in Chinese factories are likely to be at the same level of quality as those made in Swiss factories. I'm simply tired of people saying things like "the DG3804/2893-2/whatever is a TRUE GMT movement". They all work the exact same way, it's just a matter of how well it's done. One of these days Seagull will start cloning the 2893-2 (they already clone the 2892). What will you say then? And finally: I don't have a "favorite" movement. The 2824 and 2892 are simply different. I do have to admit the 2892 is prettier.

The first link you posted does not contain any comparisons between the 2892 and 2824/2836, but its companion piece on the same website (http://www.chronometrie.com/eta2824/eta2824.html) says this: "I don’t see any difference in accuracy between the two, provided that they are both fitted with the highest – chronometer – grade parts, carefully lubricated and adjusted to the best accuracy possible. Of course, very few fall into that category, so it’s no wonder that the 2824 has gotten a bad rap as the 2892’s poor cousin." The second link says this: At the top grades, some people consider the 2824 to be more robust It’s sometimes mistakenly implied that the 2892-A2 is a significantly newer design than the 2822 At top levels, both can be made equally accurate "Generally however, most high end makers will use 2892A2 or a derivative of the 2892 simply from market impressions that the 2892 is superior regardless of grade." So the link you posted actually contradicts your assertion. A chronometer-grade 2824 is in pretty much every respect the equal of a 2892, with a more efficient winding system and better shockproofing. People "think" the 2892 is "superior" but there are few techincal reasons that really support this opinion. The design isn't significantly newer. The only main substantive difference is that it's thinner. I certainly have. It's not as though they're uncommon. They're simply uncommon in reps. Calling the 2824 a "turd" is just ignorant. And I should have been more clear: most DD chrono modules are designed to sit on top of 2892s, but the 2824 has been used as a tractor as well in the past and there were DD chrono modules designed for that use as well. Heck, there's on one on eBay right now. http://www.ebay.com/itm/NOS-Dubois-Depraz-2020-flyback-chronograph-movement-based-on-a-2824-ETA-/111328789004?pt=Wristwatches&hash=item19ebb6820c I don't understand why you're so emotionally attached to the idea that "2892 is better" and "2824 is a turd."