"SAVED" by my C700!

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downer
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Re: "SAVED" by my C700!

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28800bph wrote:
downer wrote:
Mortis wrote:Come on forum, I think this is a challenge - what else can we make Sir 28800bph build?! :lol:
Every time someone suggests something it seems that he is already making one... And then follows up with pics and instructions. Have you thought of building a COSC tester yet, Sir? Or a brewery?!
I'd quite like a teleportation device, as I'm a bit sick of jumping on airplanes every week of my life.

I have to be in Germany by tomorrow evening Mr 28800, so I'll leave it with you. After all, how hard can it be? :)
Sorry I didn't see this until just now, or I would have teleported you to Germany. Hope you had a good flight though.
I have been working on breaking the space/time continuum. So far only I use it to get my beer out of the refrigerator.
Actually, the flight was awful. It was a damn small plane that was absolutely rammed (due to a strike at another airport in Germany). I was sitting next to a massive fat bloke (and I heard him thinking exactly the same).

The return flight was pretty much the same.

However, I will do the whole thing again next Tuesday, so I was thinking of using your beer teleportation process before the flight. The only problem is, the flight is at 7:00 in the morning...:)
Richard
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Re: "SAVED" by my C700!

Post by Grommit »

Just so's I know, is it just Germany that has beer teleportation restrictions before 07:00, or is it an general international ban?
C15 Henley
C8 Vintage
Bulova Precisionist Claremont
Omega Seamaster Professional
Omega Planet Ocean

Want - C8 Mk1 black & tan, C70 DBR1

"....or wonder 'til it drives you mad, what would have followed if you had."
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Re: "SAVED" by my C700!

Post by downer »

Grommit wrote:Just so's I know, is it just Germany that has beer teleportation restrictions before 07:00, or is it an general international ban?
The only flights where severe drinking is encouraged before the flight and before 7 in the morning are flights to the Balearics or the Canaries.
Richard
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Re: "SAVED" by my C700!

Post by atnits »

Russ-Shettle wrote:
atnits wrote:
Russ-Shettle wrote:I think I know what may be causing that and it should be a simple fix. Send it in.
What do you think is causing it? I've sent it back to my watchmaker, who can't see the problem as it's working ok when he tests it. :? (It was generally at the start of the day, or when the power had run down, that it was doing it - if I ran the chrono constantly it was ok.)
Based on your description: The second hand, when it rotates around, has an attachment on its wheel gear that pushes the 30 minute wheel gear one tooth at a time per rotation. The attachment appears like a thin wire, shaped at the end in order to make just the right contact, advancing the 30 minute dial one minute at a time. Adjustment of the actuator arm must be fairly precise. It could be jamming or hanging up against the 30 minute dial wheel. I sounds intermittent, not happening all the time, and as you say, only in the morning when you suspect it to be run down. quite possibly so but not the shuttering. You would need to make sure of this. I would think that your watch would have to be well wound down to the point of almost stopping.

The adjustment of the actuator is critical for proper strike in the advancement of the 30 minute dial hand. Are you sure your watchmaker knows everything about the 7750? I've read that it's a tough movement to work on. Not trying to judge him of his knowledge. I don't know him, of course, but does he know to check and make the adjustment? You might want to seek another watchmaker and ask him specific question pertaining to his knowledge and experience with this particular movement. Don's settle on just one inspection.

Has it malfunctioned since he looked at it? Your watchmaker would have had to remove the rotor bridge in order to make a visual inspection of this area. Perhaps the problem corrected itself with whatever he did. Observe what's happening if it does it again. At what point during rotation does the second hand begin to shutter? One spot? many spots? That's all important to know because the minute wheel actuator shouldn't make contact until about or just past the 59 second mark if the problem is the actuator. What you should observed during normal operation; the 30 minute dial will suddenly advance one minute each time the second hand rotates around to the 12 position. If the shuttering is taking place many seconds before the 60 second mark, 12 O'clock position, the problem may be entirely other than what I just described. I can only go by what you give as a symptom. Keep observing and if it continues to occur, describe the malfunction in more descriptive detail if you can. A lot is taking place mechanically to start and stop the second hand as well as to reset.
Thanks Russ. Lots of helpful info. I'll keep you informed. Cheers.
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Re: "SAVED" by my C700!

Post by Russ-Shettle »

No problem. Let us know how or what it is doing. Check this out: http://www.eta.ch/swisslab/7750/7750.html This shows adjustments that likely pertain to the problem you observed. This is a great illistration for getting to know your watch.

Russ