Psst! Want to see a CF3?.....
- 119 replies
- last reply by robmillersdg 25 Sep 2014
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Connoisseur -
Connoisseur
I am with Paul on that topic... Where is the iron core on the regular spitfire then, as internal space was mentioned as a problem in previous discussions. Interesting development?
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I don't know the answer. It's something I can best handle when I talk to some of the product development people, which will take some time. I suspect the case back can be made thinner, and I will find out.
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Master
Comming back from my holidays....
So it seems, the rally for the CF3-watches has not yet started (or is over), to there is still hope... for me
Lets see what is comming up for the back...
best regards
Ralph
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MasterHave I missed it or are we due some news on this?
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Distribution details are still being worked out. Sorry for the delay.
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MasterHas there been an answer?
Best,
-Christian -
ApprenticeI would be interested in that answer as well. There are meanwhile truly antimagnetic watches without the cage on the market, but as far as I know, IWC does not hold the patent for it.
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Christian and David,
The regular Spitfire is precluded from having an antimagnetic cage since the dial needs to be antimagnetic (made if soft iron). The glossy dials don't work, and to insert a soft iron back to the dial would make it too thick.
IWC does not have any patent for soft iron (Faraday) cages. They've been around for literally centuries but not used in watches until I'd guess 70 or 80 years ago.
In the 1930s IWC had "anti-magnet" watches with key movement components made out of amagnetic metals. In the 1980s the minesweeper model Ocean Bund used gold for some movement parts since it's not magnetic. Other companies have used similar approaches or Faraday cages or both.
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Apprentice
Michael,
All you said was already known. We were wondering how it was possible to have an iron cage in the CF3, as stated above.
"Indeed, the current Spitfire Chrono has a steel back, as mine shows. But it has no antimagnetic cage, as the specifications indicate. I was under the impression that the cage was left out because otherwise the watch would become too thick. If the CF3 will have such a cage, will the watch become thicker too? And will the movement have to be modified slightly, as with the 80110 (with cage) versus the 80111 (without cage)? I thought that a CF watch would be a production watch with some special dial etc. but not with a special, thicker, case, as that would become too expensive."
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I thought I was clear; sorry if I wasn't.
There is no increased thickness of the case. There is no modification to the movement. The difference here is the dial.
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Master
Thank you Michael! So the dial of the CF3 itself is antimagnetic but the regular Spitfire is not because the glossy dials cannot be antimagnetic - respectively an insert of a soft iron back to the dial would make it too thick.
Cheers,
-Christian -
Apprentice
If I conclude correctly: There is no soft iron cage in the CF3, it is only the dial that is different. So the watch is not antimagnetic in the sense of the traditional pilots watches that have one, right?
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MasterI read somewhere that the bottom of the case of the CF3 is thinner, so an antimagnetic cage could be inserted. Sounds a bit flimsy to me, but who knows this is a working solution. Isn't there a picture to show this construction? If Michael's statement is correct, that only the dial of the CF3 is different from the regular Spitfire Chrono, then that regular model should already have the antimagnetic cage, which I do not believe to be true.
Kind regards,
Paul -
I am sorry again --I thought I was clear but apparently not.
A soft iron cage requires both the inner back piece plus the dial. The CF3 to my knowledge will have both. No case modification is required. There is room in the 3777 case, the chassis if you will, for the back piece. The dial, however, on the regular 3777 Spitfire cannot be made of soft iron due to its metallic finish. The dial on the regular 3777 cannot have a soft iron back on it, since then it would be too thick. The dial of the CF3 is entirely soft iron and as such is the same thickness as the metallic dial.
To my knowledge these are the differences between the CF3 and the regular 3777:
Different dial design and construction, including single date window
Amagnetic dial
Amagnetic soft iron inner back
Different back (solid here vs. exhibition), with engraving
Different strap material
Specifically numbered x/250 -
Apprentice
Thank you, Michael.
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Master
Hi Michael,
I guess you mean the 3878 instead of the 3777: the latter has the antimagnetic cage already, the former not, partly maybe beacause the 8936x movement for the 3878 is quite thick. So, the regular 3878 has no antimagnetic cage, although there would be enough space for it, solely because it has an ardoise sunburst dial. OK. And on the CF3 the available space for the antimagnetic cage is used to give it that cage, because it makes sense as it gets a soft iron dial. OK. The concept sounds a bit strange to me but it is as it is.
Kind regards,
Paul -
InsiderLive and in the Steel...
