ProMariner Posted January 7, 2014 Report Share Posted January 7, 2014 Hi guys, I just broke the hair spring on my Daytona A7750 in trying to adjust the movement to have something as close as possible to +/- 2 sec/day I touched with a toothpick the hair spring and now it is broken. Do you think a watchmaker will repair it even if it is a replica with a clone movement and with sec@6 modification? What will be the price ? Quote Link to comment Share on other sites More sharing options...
sputim Posted January 7, 2014 Report Share Posted January 7, 2014 Probably easiest way is to contact your td and ask if its pissible to buy a balance wheel for this particular movement. With good pliers and the right screw drivers you would certainly be able to replace it. Nevertheless, not sure wether a TD can source it for you or not. If you find a repfriendly watchsmith go there and try your luck Quote Link to comment Share on other sites More sharing options...
ProMariner Posted January 7, 2014 Author Report Share Posted January 7, 2014 The person who sold me the watch told me that he cannot source me the part .. :/ Quote Link to comment Share on other sites More sharing options...
sputim Posted January 7, 2014 Report Share Posted January 7, 2014 So hit up andrew from tt if he has the watch in stock. Otherwise search a watchmaker which probably can replace the whole oscilator hopefully an expert chimes in. Quote Link to comment Share on other sites More sharing options...
kbh Posted January 7, 2014 Report Share Posted January 7, 2014 (edited) Parts for an A7750 are not readily available to the average guy on the street. Your best choice is to find a watchmaker from one of the forums who might have spare parts. Otherwise you'll probably have to buy a new movement. Or find a member with a dead Daytona. There seems to be lots of them around. Edited January 7, 2014 by kbh Quote Link to comment Share on other sites More sharing options...
mymanmatt Posted January 7, 2014 Report Share Posted January 7, 2014 If you do happen to find the part, be sure and buy the balance assy. That will be the balance wheel, hairspring, and balance staff. Do not try to replace just the hairspring. These are commonly made as an assembly. I think you can buy the assy from just about any td that sells the a7750. If you can source an assy, just about any watchsmith anywhere can install it for you in a couple of minutes. Next time you try to adjust your speed, be sure the movement is NOT running. Good luck Quote Link to comment Share on other sites More sharing options...
kbh Posted January 7, 2014 Report Share Posted January 7, 2014 Something just came to mind. I know many of the parts from the gen ETA 7750 are interchangeable with the Asian clone. Has anyone ever tried changing the balance assembly? By the way, I'm looking for a A7750 reversing wheel, which apparently is not interchangeable, if anyone's got a spare. Quote Link to comment Share on other sites More sharing options...
ProMariner Posted January 8, 2014 Author Report Share Posted January 8, 2014 Something just came to mind. I know many of the parts from the gen ETA 7750 are interchangeable with the Asian clone. Has anyone ever tried changing the balance assembly? By the way, I'm looking for a A7750 reversing wheel, which apparently is not interchangeable, if anyone's got a spare. If the oscillator can be interchangeable with gen 7750, then I can bring the watch to any watchmaker and he can fix right ? Is a gen oscillator from A7750 is hard to find. I really worry about the repair price.. I bought the watch for 300USD and if the watchmaker ask me 300USD to fix it (inc service adjustment and regulation of course) I don't think it worth it for a rep... Quote Link to comment Share on other sites More sharing options...
mymanmatt Posted January 8, 2014 Report Share Posted January 8, 2014 While a gen part might interchange, hairsprings are made for a specific movement. If you did manage to find a gen assy, you probably won't be able to regulate it. If the hairspring is to strong or to weak, it will gain a minute or 2, and then begin to lose a minute or 2. It will be completly unstable. Quote Link to comment Share on other sites More sharing options...
ceejay Posted January 8, 2014 Report Share Posted January 8, 2014 When you say the hairspring is broke, what do you mean, bent, snapped or come apart from it's assembly? If it's snapped then it's new hairspring time, which a good watchmaker could fabricate although no doubt pricey. If it's bent then again a good watchmaker should be able to straighten it. Same if it's come away from it's fixing. But there must be lot's of dead 7750's out there if you ask about Quote Link to comment Share on other sites More sharing options...
ProMariner Posted January 8, 2014 Author Report Share Posted January 8, 2014 By broken I mean really broken in half if you prefer lol I will go first at a local watchmaker, I called him on the phone and he told me to bring the watch tomorrow to see it and give me an estimate price. I forgot to tell him that is a rep watch with a rep movement, hope he will accept the job. Quote Link to comment Share on other sites More sharing options...
ProMariner Posted January 8, 2014 Author Report Share Posted January 8, 2014 While a gen part might interchange, hairsprings are made for a specific movement. If you did manage to find a gen assy, you probably won't be able to regulate it. If the hairspring is to strong or to weak, it will gain a minute or 2, and then begin to lose a minute or 2. It will be completly unstable. Are sure with that at 100% or you are supposing ? Have you heard about this experience ? Quote Link to comment Share on other sites More sharing options...
mymanmatt Posted January 9, 2014 Report Share Posted January 9, 2014 Your in luck, I found a complete bridge with balance assy attached. For a $500 I'll tell you LOL ebay item number 231116483102 $68.00 plus $11.00 shipping from Idaho. It's the complete bridge, balance wheel, hairspring, and balance staff. great buy. I'll pm you also Quote Link to comment Share on other sites More sharing options...
ProMariner Posted January 10, 2014 Author Report Share Posted January 10, 2014 Yes I saw it ! I think I can replace it myself but the main problem now is, does this gen eta 7750 balance wheel + bridge for Breitling will fit my A7750 and how the hell am I going to regulate and adjust the watch lol ? I broke it trying to adjust and regulate it .. I hesitate do bring the watch to a local watchmaker I am worry that he keep the watch and call the police, do you think it is possible ? Quote Link to comment Share on other sites More sharing options...
mymanmatt Posted January 11, 2014 Report Share Posted January 11, 2014 No he won't. But id you have the parts in hand, no bracelet on the watch and the back only snug, he change it in 3-4 minutes. Then he probably can regulate for you. Quote Link to comment Share on other sites More sharing options...
ProMariner Posted January 11, 2014 Author Report Share Posted January 11, 2014 No I didn't buy the part yet. I already removed the bracelet, tomorrow I am going to the watchmaker. I hope the repair won't be pricy. The balance wheel can be replace in situ ? Without removing all parts of mechanism ? Quote Link to comment Share on other sites More sharing options...
ProMariner Posted January 11, 2014 Author Report Share Posted January 11, 2014 I brought the watch first to a high watchmaker in the city which is known for his great job and he told me that he doesn't accept rep and rep movement and gave me a lesson about rep, I felt so bad lol. He also showed me a beautiful and iconic piece in his wrist a Gyro tourbillion from Jeager Lecoultre. I was like O_O OMG. Anyway I brought the watch to another watchmaker that told he doesn't give a damn about repairing rep or gen lol but he wasn't passionated by his work like the first watchmaker. Anyway Tuesday I will see him and he will tell me the price for changing the balance wheel and service, regulate and adjustment.. Quote Link to comment Share on other sites More sharing options...
ProMariner Posted January 14, 2014 Author Report Share Posted January 14, 2014 Holly shoot! The watch smith told me :135,30 € for servicing the watch62,40 € for the balance wheel (complete with bridge)So almost 200€ Quote Link to comment Share on other sites More sharing options...
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