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Peter-H

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  1. Peter-H

    Bizzare IWC chrono fault

    Apparently the barrel wall was worn. I don't know what this means but the guy says it can explain the behaviour. A new barrel and spring have been fitted.
  2. Peter-H

    Bizzare IWC chrono fault

    I can't tell if you are being sarcastic He is "Rolex accredited Watchmaker", whatever that means. At least he is not claiming to be "one of the few" master watchmakers like the £1500/hr one down the road from here In the end I got the watch at about the right price, about 1k under what they sell for on Ebay, so if it has to go to IWC I will bite the bullet and do that. But it will be my last mechanical watch. The next one will be a solar powered quartz, which actually solves the issue I was trying to solve by going to self winding watches originally. That said, the Fortis one, similar movement (whoops I know one is supposed to say "calibre" ) worked perfectly for the 4 years I had it; it just wasn't accurate.
  3. Peter-H

    Bizzare IWC chrono fault

    Yes indeed. He is doing it for nothing, all the time the fault is appearing, even though my contract is with the shop (which is not responding). He is apparently Rolex and Omega trained and Omega authorised, or something like that. My fallback position seems to be to throw a chunk of money at it via IWC - probably best part of 1k. OTOH this guy might find the fault...?
  4. Peter-H

    Bizzare IWC chrono fault

    The watchmaker has fitted a brand new barrel and mainspring, and has had it on test for a number of days. To me, a mechanical and electronics engineer, it's a mystery how such an intermittent and dramatic failure can exist, yet appears so extremely sporadic.
  5. Peter-H

    Bizzare IWC chrono fault

    I wrote a number of emails to them and got very "corporate" bland responses. Basically the tone was "send us the watch and a blank cheque". I also phoned them up and they could not even work out which category on their service price list the watch was.
  6. Peter-H

    Bizzare IWC chrono fault

    I am sure the fault was always there. It is rare enough to enable you to sell the watch and get away with it, and a "watch broker" shop like the one I bought it from would never know. Let's see what this repair guy comes back with. It's free (of course). Sending it to Watchfinder would be the next move, andd I will be asking the shop to pay at least a part of it. Could a magnetised watch do this? I am not aware of any recent magnet exposure. My last airline trip was 4 weeks ago. Regarding IWC, I would have expected them to be a bit less arrogant. I have been in business since the 1970s and if a customer reported this sort of fault (which I WOULD have seen before, across a customer base of many thousands) I would say something like "a standard service is £x, we have seen this sort of thing before and it tends to run around £y in additional parts, but we cannot be sure until we see it". Come to think of it, a standard IWC service must include some parts, otherwise the money (£700 - I don't remember) is just for a bit of time, new seals and some oil
  7. Peter-H

    Bizzare IWC chrono fault

    I might try that; I think it came with a 1 year warranty. However it is "only" a mechanical watch so whatever is causing this must be visually evident if one looks in the right place. The watchmaker who last worked on it (and apparently fixed it, until now) thinks it may be magnetised. However (I can't edit my post above) there is no right to a refund in the UK, AFAIK, after a certain time. All you get is a repair. Just looked it up: it is up to 30 days only.
  8. Peter-H

    Bizzare IWC chrono fault

    A few months later, the fault has returned... Apologies for the malformed video. It is doing 3 seconds per minute, as before. This time, working back from the +30 mins error, this gives roughly 10 hours of fast running, so it started yesterday evening when I was just walking around the house, so no skiing or anything like that. Also I noticed it when I woke up so it has been doing it while I was sleeping for the most recent 7 of the 10 hours. And it was still doing it while I operated the stopwatch to make the above video just now. What is my best option? Originally the watch shop offered to send it to Watchfinder which is an IWC service agent and they would do it for something like 500 quid (probably less to him as he is trade). He would not send it to IWC since they won't ever quote a price for anything; I had some correspondence with them about this, and they saw the previous video, and were very cagey about saying anything. Many thanks for any tips. This watch, which cost a few k, is basically a piece of junk because a sun dial in UK weather is more reliable
  9. Peter-H

    Traser

    Standard aircon delivers a 50% RH. I don't know how to calculate this but a watch with 50% RH air will eventually mist up if the temperature drops far enough. Yes, it was obviously a subtle problem in the movement - a tooth missing on a gear? Very hard to reproduce though. I don't think they ever found it, but with a RONDA movement costing about 30 quid, there is no point in looking. The loose hand is really bad; I agree.
  10. Peter-H

    Traser

    Late reply but... I have had a Traser stopwatch for several years, wore it 24/7/365, swimming, showers, baths, etc, and it never misted up. I changed from it to an automatic Fortis because the battery died at a very inconvenient place. However I kept it as a spare/backup watch and a week or two ago found that the stopwatch function had a bizzare fault (apologies for the video standing on its side). At first Traser's UK service shop saw nothing wrong with it so I asked them to watch it more carefully This led to a new RONDA movement for about £40 (very reasonable) but when it came back the little RH hand had come off and was laying inside the case. So I sent it back yet again, yesterday. I am sure they will fix it. IMHO a watch which mists up has trapped moisture inside. It's a good point actually. If you are working in a room at say +20C and outside it is +20C and it is raining, the RH in the room will eventually reach close to 100%. Water vapour equalises its pressure like any other gas, according to the law of partial pressures. So if it is raining outside, the only way you will get a reasonably low RH inside the watch before you screw the back on will be by heating the room well above the outside temperature. But even a 10C difference will only reduce the RH by so much, and if the watch is cooled sufficiently, the water vapour inside will still condense. The obvious solution is to blow some dry air or other dry gas in there and quickly screw the back on. Does anyone do this? Normally a watch worn on the wrist is not far off the body temp but some people wear watches on the outside of clothes and those could get cold.
  11. Peter-H

    Some of my modified watches

    Have you looked at fitting the tritium glass tubes to watches? They exist on e.g. Traser watches but there is a load of better watches (self winding chrono for example) and AFAIK none of them have the tritium hands (and other markings). Most of the tritium watches are rather naff. The night visibility is completely different; the "super luminova" hands use by everybody else are not visible after a few hours. I would think you could just buy the glass tubes and glue them onto the hands etc with epoxy ;)
  12. " the power going to the balance may affect the amplitude but not the timing that each impulse takes as the hairspring will have been timed to the weight and moment of inertia of the balance " Sure; this is how clocks are supposed to work (I know nothing about clocks but a quick google reveals loads of interesting stuff about the history of timing mechanisms) but there will always be second third fourth etc order effects. For example the watch is full of air at roughly the ambient pressure (there will be leaks past the o-rings even on a "200m" watch) so a greater amplitude of movement will encounter more losses due to air resistance, which will affect the timing. Perhaps this is known and the mechanism is designed to more or less compensate for it, but I can't see it doing so exactly.
  13. He told me the £1500/hr when I was there. I discussed it with him; it was no misunderstanding. There are just 2 guys there; the "old" "Master Watchmaker" and a younger guy who sees people who walk into the shop (and "sometimes" answers emails). Of course I think £1500/hr is a joke. A day spent on a watch will exceed the price of all but the really pricey watches. I would never pay that rate unless the watch was worth 100k
  14. The 1500 quid was not a typo. Here's the shop: http://www.timerestoration.co.uk/ Mel - I have never wound any self winding watch, except when it ran out because I didn't wear it for a while (which is very rare since I wear a watch 24/7 all year)
  15. From a purely engineering POV this must be true because I am sure there is no way to make any wholly mechanical timing mechanism completely and totally independent of the torque being applied to it. Only in electronics (my profession) can this be achieved; not completely (that is a physical impossibility) but it can be achieved to a level at which any effect is unmeasurable. What I don't know is what range of error one should expect. I have a Fortis 597.22.141.3 watch which runs consistently about 20-30 secs slow per day. I took it to a local watchmaker who refused to touch it, saying it is in spec (which is true) and that no Master Watchmaker (he claims to be one and charges £1500/hour) would adjust it either! However he did put it on a watch winder, so perhaps he suspected I was not winding it up hard enough. I doubt that was the case, with daily walking, swimming, etc... I have an IWC IW378901 also (posted about it in another thread) which seems to gain perhaps 0.5 second per day when one is skiing, although I have not done the test rigorously as the error is so small anyway.

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