odourboy Posted August 28, 2011 Report Share Posted August 28, 2011 My 2008 Rolex Sub rep was a bit fast, so I thought I'd try an adjustment. It's got an Asian 2813 automatic movement. I don't have any fancy equipment so I was syncing it against my 'atomic' clock (one of those La Crosse Technology quartz jobs that syncs up to the atomic clock radio broadcast). I was checking the drift of the seconds hand on my Sub about once an hour. What I've noticed is that while the second hand is loosing about 6 seconds per day (pretty damn good), the minute hand is also losing time - about 2 minutes per day - independent of the seconds hand. When I initially sync up the watch, I position the minute right on the dial marker and the second at 12:00. The minute seems to slowly drop behind so after a couple of hours, I can see that it no longer aligns with the dial marker as the second sweeps past 12:00. It gets progressively worse so that after 12 hours, the minute hand is lagging by about one minute from synced time. I've repeated this test three times just to confirm. So, it appears that the seconds and the minutes do not stay in lock-step with each other. Is this possible? How can this be happening? (I'm no watch smith so I don;t understand how this can be). Thanks! Quote Link to comment Share on other sites More sharing options...
Jkay Posted August 28, 2011 Report Share Posted August 28, 2011 The most simple explanation is that you are losing 0'2"6 a day, and the hands are in sync with each other. Quote Link to comment Share on other sites More sharing options...
odourboy Posted August 28, 2011 Author Report Share Posted August 28, 2011 I wish it were so, but alas, with the frequent checking and the drift in sync between the second and minute hand, I'm quite sure that's not the case. My initial thought was that the minute hand was loose and slipping on the shaft, but the rate it lags alignment with the minute marker versus the second hand passing the 12:00 position appears consistent. (Hope you're following that) Quote Link to comment Share on other sites More sharing options...
Pugwash Posted August 28, 2011 Report Share Posted August 28, 2011 If this really is happening as you describe, your movement is screwed. I suspect missing teeth in a cog or something. Quote Link to comment Share on other sites More sharing options...
Watchmeister Posted August 28, 2011 Report Share Posted August 28, 2011 I applaud your efforts. But go drop the $20 on a new movement. Seriously, I suspect that unless you are prepared to truly break down the movement it will be very difficult to figure out. Quote Link to comment Share on other sites More sharing options...
odourboy Posted August 28, 2011 Author Report Share Posted August 28, 2011 I suspected the movement might be screwed, but I wanted to hear it from those more knowledgeable than me. So where can I drop $20 and buy a replacement movement? Quote Link to comment Share on other sites More sharing options...
Watchmeister Posted August 28, 2011 Report Share Posted August 28, 2011 I may be off by $5.00 but how much is your time worth trying to figure this one out? http://www.ebay.com/sch/i.html?_nkw=ETA+2813+movement&_sacat=0&_odkw=Asian+2813+movement&_osacat=0&_trksid=p3286.c0.m270.l1313 Quote Link to comment Share on other sites More sharing options...
odourboy Posted August 28, 2011 Author Report Share Posted August 28, 2011 I may be off by $5.00 but how much is your time worth trying to figure this one out? http://www.ebay.com/sch/i.html?_nkw=ETA+2813+movement&_sacat=0&_odkw=Asian+2813+movement&_osacat=0&_trksid=p3286.c0.m270.l1313 The 'date' version looks like the correct movement. Worth a try. Just bought one. Thanks guys! Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.