montydog Posted May 18, 2007 Report Share Posted May 18, 2007 Hello peeps, I have a lemania copy movement in my A Lange & Sohn rep. It runs about 1 minute fast per day. I want to slow it down but don't know which of the little arms (1 or 2 on the photo)to move and which way. Help appreciated. Also, how much do I move the adjuster? many thanks M Quote Link to comment Share on other sites More sharing options...
RWG Technical Posted May 18, 2007 Report Share Posted May 18, 2007 Move #2 towards #1 (makes the hairspring appear longer). Without a watch analyzer to measure immediatly the results, it's a hit and miss affair, you can use an atomic clock for reference. Make sure you DON"T touch the hairpring, use a 4X loupe while moving it, only push on the top of the arm near the balance kock, and support your moving hand so if you slip, the tweezers dont' go anywhere and damage something. 1 minute is probably about 1/8" in arm movement... RG Quote Link to comment Share on other sites More sharing options...
montydog Posted May 18, 2007 Author Report Share Posted May 18, 2007 Move #2 towards #1 (makes the hairspring appear longer). Without a watch analyzer to measure immediatly the results, it's a hit and miss affair, you can use an atomic clock for reference. Make sure you DON"T touch the hairpring, use a 4X loupe while moving it, only push on the top of the arm near the balance kock, and support your moving hand so if you slip, the tweezers dont' go anywhere and damage something. 1 minute is probably about 1/8" in arm movement... RG The Zigmeister, Many thanks. Very helpful and informative. Regards M Quote Link to comment Share on other sites More sharing options...
RWG Technical Posted May 18, 2007 Report Share Posted May 18, 2007 Let me know how it goes... RG Quote Link to comment Share on other sites More sharing options...
montydog Posted May 21, 2007 Author Report Share Posted May 21, 2007 Let me know how it goes... RG Hi, Well, I slowed it down (too much) and then gradually speeded it back up. My last adjustment was just about as small a movement as I could make. It is now running 7 seconds fast per 24 hours (all at night when I'm not wearing it). Can I realistically get it any better than this? BTW, is it the same method and direction of adjustment for the 7750 & 21J movements? Thanks in advance M Quote Link to comment Share on other sites More sharing options...
NRG Posted May 21, 2007 Report Share Posted May 21, 2007 Hi, Well, I slowed it down (too much) and then gradually speeded it back up. My last adjustment was just about as small a movement as I could make. It is now running 7 seconds fast per 24 hours (all at night when I'm not wearing it). Can I realistically get it any better than this? BTW, is it the same method and direction of adjustment for the 7750 & 21J movements? Thanks in advance M Is that +7s with the watch Dial up? If so, place the watch in a vertical position (dial vertical) with the '12' facing down and check again, don't forget to fully wind the watch. Quote Link to comment Share on other sites More sharing options...
montydog Posted May 21, 2007 Author Report Share Posted May 21, 2007 Is that +7s with the watch Dial up? If so, place the watch in a vertical position (dial vertical) with the '12' facing down and check again, don't forget to fully wind the watch. Hi NRG, Yes, I put my watch on it's back at night and it gains the 7 secs. I'll try as you suggest and see if it makes any difference. Thanks M Quote Link to comment Share on other sites More sharing options...
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