redwatch Posted November 29, 2011 Report Share Posted November 29, 2011 Hello fellow watch movement experts. Need some advice here. Working on a 2824 and I have a question. When you take the train wheel bridge assembly apart, is there a good trick for putting it back on and having all the jewels line up with the gear train pivots? I can get it to go back on after many, many trial & error attempts, but there has to be a good trick for this. Or perhaps its just a lot of practice? Quote Link to comment Share on other sites More sharing options...
FxrAndy Posted November 29, 2011 Report Share Posted November 29, 2011 Practice and patience Red, the more you do it, the easyer it gets. Quote Link to comment Share on other sites More sharing options...
redwatch Posted November 29, 2011 Author Report Share Posted November 29, 2011 Thanks Andy. I guess I already knew that. It's quite frustrating though at times! I'll keep on trying then. Quote Link to comment Share on other sites More sharing options...
redwatch Posted November 29, 2011 Author Report Share Posted November 29, 2011 Well after some trial & error I managed to get it back together and up and running.... kind of. It is pretty erratic. The movement came to me with issues of stopping after a short time. This seems to have gone away, but the timing is all over the place. Obviously it needs a thorough service (which I am not quite ready to do yet), but I am curious if anyone can tell me what would make the movement behave this way? Here is a screen shot of the timing software: Quote Link to comment Share on other sites More sharing options...
ubiquitous Posted November 29, 2011 Report Share Posted November 29, 2011 What's the amplitude doing? Quote Link to comment Share on other sites More sharing options...
FxrAndy Posted November 29, 2011 Report Share Posted November 29, 2011 Dirty main spring Quote Link to comment Share on other sites More sharing options...
redwatch Posted November 29, 2011 Author Report Share Posted November 29, 2011 What's the amplitude doing? Here's a screenshot of the Amplitude. Dirty main spring Really? Something that simple could cause such erratic behavior? Quote Link to comment Share on other sites More sharing options...
FxrAndy Posted November 29, 2011 Report Share Posted November 29, 2011 uneven power delivery, or could be dirt in the tooth of a gear, i have had a smallest piece of shit in the tooth of a main spring barrel stop a movement and that is where the movement has the most power (but moves the slowest) it has the least power to over come an obstuction at the escape wheel but moves the fastest. If the main spring is dirty then the spring will bind and stick and you see big flutuations in the amplitude, but hat can be cased by dirt and old oil in the rest of the movement as well. Quote Link to comment Share on other sites More sharing options...
hackR Posted November 30, 2011 Report Share Posted November 30, 2011 nice learnings...love reading these posts... @Stace -- have always wondered this too...takes me forevvvvvvvvvvver...but i chalk it up to noobness... Quote Link to comment Share on other sites More sharing options...
redwatch Posted November 30, 2011 Author Report Share Posted November 30, 2011 Thanks R! I love these posts too, so when I can I try to post some myself. Never know who else it might help Quote Link to comment Share on other sites More sharing options...
asf Posted December 6, 2011 Report Share Posted December 6, 2011 ooh very informative! Quote Link to comment Share on other sites More sharing options...
Rolexman Posted December 6, 2011 Report Share Posted December 6, 2011 Demagnetize the hair spring (balance) Quote Link to comment Share on other sites More sharing options...
redwatch Posted December 6, 2011 Author Report Share Posted December 6, 2011 Demagnetize the hair spring (balance) Now that is an interesting thought. So just remove the hair spring assembly and pass it through a demagnetizer? Quote Link to comment Share on other sites More sharing options...
automatico Posted December 7, 2011 Report Share Posted December 7, 2011 " So just remove the hair spring assembly and pass it through a demagnetizer?" You can run the complete watch or movement with or without the dial/hands through the demag. Be sure to have a firm grip on it. If it is a 'tunnel' type demag...put the watch in the tunnel, turn it on, leave the watch in the tunnel for a couple seconds, move it out of and away from the tunnel quickly, turn the demag off. Never leave an AC demag on for long because they are basically a direct short and can heat up quickly. Flat top demags work the same way. Quote Link to comment Share on other sites More sharing options...
redwatch Posted December 7, 2011 Author Report Share Posted December 7, 2011 I will give that a try then. I have an old bergeon tunnel demag which works great. I'll keep my fingers crossed Quote Link to comment Share on other sites More sharing options...
Rolexman Posted December 7, 2011 Report Share Posted December 7, 2011 " So just remove the hair spring assembly and pass it through a demagnetizer?" You can run the complete watch or movement with or without the dial/hands through the demag. Be sure to have a firm grip on it. If it is a 'tunnel' type demag...put the watch in the tunnel, turn it on, leave the watch in the tunnel for a couple seconds, move it out of and away from the tunnel quickly, turn the demag off. Never leave an AC demag on for long because they are basically a direct short and can heat up quickly. Flat top demags work the same way. +1 That should do the trick. Quote Link to comment Share on other sites More sharing options...
redwatch Posted December 7, 2011 Author Report Share Posted December 7, 2011 Demagnetize the hair spring (balance) " So just remove the hair spring assembly and pass it through a demagnetizer?" You can run the complete watch or movement with or without the dial/hands through the demag. Be sure to have a firm grip on it. If it is a 'tunnel' type demag...put the watch in the tunnel, turn it on, leave the watch in the tunnel for a couple seconds, move it out of and away from the tunnel quickly, turn the demag off. Never leave an AC demag on for long because they are basically a direct short and can heat up quickly. Flat top demags work the same way. This is exactly why I just LOVE this community!!! Thanks for the suggestions guys!!!! Released the main spring tension and ran the movement through the tunnel demagnetizer and voila!!! Running like a champ now!!!!!! Quote Link to comment Share on other sites More sharing options...
Jkay Posted December 7, 2011 Report Share Posted December 7, 2011 Sounds like someone tried to test the magnetic resistance of their "Anti-Magnetic Shield" ... LOL ... any common rare earth magnet will instantly overpower even Gen magnetic protections .. they were never intended to protect the watch movement from today's novelty magnets. http://www.thinkgeek.com/geektoys/science/bbe8/?srp=18 Quote Link to comment Share on other sites More sharing options...
Rolexman Posted December 8, 2011 Report Share Posted December 8, 2011 Great job! Quote Link to comment Share on other sites More sharing options...
redwatch Posted December 8, 2011 Author Report Share Posted December 8, 2011 Great job! Thanks! But now I have another issue I decided to be adventurous and dismantled another 2824 that I have here. When I removed the barrel bridge, underneath it was a small, brass spring. I cannot for the life of me figure out how it was attached. Here's some pics for reference: Quote Link to comment Share on other sites More sharing options...
Rolexman Posted December 8, 2011 Report Share Posted December 8, 2011 It's the balance hack. It goes on the lower (in the pic. upper) post. Make sure the tip sits in the sliding pinion. 1 Quote Link to comment Share on other sites More sharing options...
redwatch Posted December 8, 2011 Author Report Share Posted December 8, 2011 Brilliant! Thank you!! Quote Link to comment Share on other sites More sharing options...
redwatch Posted December 8, 2011 Author Report Share Posted December 8, 2011 Back together and running at 1.4 sec/day 1 Quote Link to comment Share on other sites More sharing options...
Rolexman Posted December 8, 2011 Report Share Posted December 8, 2011 Top notch. Make sure it runs +5~7 dial up. That will average in the best results during wear. Quote Link to comment Share on other sites More sharing options...
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