let me correct what I said above: u need a donor or be Phil
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| Author: | Dom87 [ Tue Feb 14, 2017 9:51 am ] |
| Post subject: | Valjoux 7740 |
I`m looking for a Valjoux 7740 for a 7103 project. Is there any change to buy one somewhere or is it a big challenge? I got a case with crystal and blue dial with almost all hands. Thanks |
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| Author: | WatchFred [ Tue Feb 14, 2017 10:38 am ] |
| Post subject: | Re: Valjoux 7740 |
huge challenge, you'll need a donor |
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| Author: | saabreit [ Tue Feb 14, 2017 11:23 am ] |
| Post subject: | Re: Valjoux 7740 |
I have just finished my 7740 projects , after 10 years my 2 Pult 7101 + 1 Navitimer 7806 are 100% matching their factory condition . Let me tell the story : it started in Jan.2006 when I bought on eBay a NOS empty 7101 case + brown dial for 120€ . In Feb. 2007 I bought a 2nd NOS empty 7101 case + blue dial . After 2 years daily hunt on eBay , impossible to find any complete cal V7740 or eventually a donor . At this period Lester Harrison was offering "function kits" on eBay so I started to buy his parts before deciding to hunt part after part, with the goal to fullfill 2 complete kits and have an horological training with my watchmaker . In jan. 2012 I bought a complete and NOS Aviation 6087 + original Breitling parts , from A. Wajs with a 50% discount , in order to get it back to its Navitimer 7806 configuration . Finally I used the V7740 for my 1st Pult , project started in 2006 ... First in, first out ! In Nov 2015 my watchmaker and I started the rebuilt of my 2 V7740 NOS kits , hunted part after part worldwide... and we needed one complete year until end ... missing lower incablocs on the mainplates , NOS parts with defects , subtile différences btw cal 11 and V7740 chrono plate ... The original chrono bridge engraved Breitling Watch Ltd CAL. 7740 is near to impossible to find . I finally gave an eye for getting 3 NOS and 100% authentic samples in Swiss last week . And during the project I started a project Heuer Monaco 77040 encasing a ...V7740. You have to know that V7740 was exclusive to Breitling and Heuer . Excelsior Park , Sinn, Aviation used some 7740 after L.G. Breitling closure . During 10 years hunting I found once a broken 7740 for parts . 1st solution = buy a donor Watch, the "cheapest" way would be to find a Aviation or a Breitling 7102 . 2nd solution = buy part by part ... if you are lucky and focused on your project, you start a 5-10 years challenge . |
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| Author: | Dom87 [ Tue Feb 14, 2017 11:37 am ] |
| Post subject: | Re: Valjoux 7740 |
WOW, thank you for this impressive story. Sounds like a huge challenge. I will start my own challenge and maybe one time i will find the right way for me. The price for the case and parts was to good and i still own a 7103 |
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| Author: | WatchFred [ Tue Feb 14, 2017 2:27 pm ] |
| Post subject: | Re: Valjoux 7740 |
let me correct what I said above: u need a donor or be Phil
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| Author: | saabreit [ Tue Feb 14, 2017 9:47 pm ] |
| Post subject: | Re: Valjoux 7740 |
Fred, I just like to go at the end of my projects but I am not sure that my approach was good in terms of time and money. Rarity of V7740 can explain why there are so many empty 7101 Pults on eBay . In the recent past, 7103 was considered as a donor watch due to its lower price . |
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| Author: | Dracha [ Wed Feb 15, 2017 3:19 am ] |
| Post subject: | Re: Valjoux 7740 |
its probably easier to find a cal 11/12 and make it into a 7740 ? |
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| Author: | saabreit [ Wed Feb 15, 2017 4:08 am ] |
| Post subject: | Re: Valjoux 7740 |
Rene, if you succeed in transforming a cal11 in a 7740 , we will call you Magic Rene ! These 2 calibers are VERY different . Basically a complete caliber has 3 modules : 1 horological , 1 calendar, 1 chrono . Horological module is manual winding for V7740 , developed by Valjoux , the other is automatic winding developed on a Büren basis - for example the oscillating mass and some components are so similar to Büren cal 1380 that they could be common, I am currently comparing . The calendar modules are completely different too. The only "common" part is the chrono module developed by Dubois depraz , despite some subtle differences exist btw versions. V7740 was exclusive to Heuer and Breitling until LG Breitling closure. Cal 11-12 was developed thru a consortium including Heuer - Breitling - Hamilton and Büren , and encased by Heuer -Breitling and Hamilton only . Büren was in charge of manufacturing except for chrono module bought to D-D. Büren ^produced the cal 11 and 11-1 , for cal 12 I am not sure if they started or not , because at this period Büren factory closed and production was transfered to the young company Kelek founded in 1970 by Jean Raoul Gorgerat . The cal.12 was branded for many companies as Zodiac, Elgin, PhilipWatch,Bulova... and also with a generic brand JRG-K as used by Kelek, Yema, Herma, and some others . Most of these "small brands" ended as donor watches . |
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