tag Posted August 30, 2006 Report Share Posted August 30, 2006 Name the genuine Quartz watches with sweeping hands. There's your answer. Seiko made quartz clocks with 4 ticks a second. Can't name the model. Since it's a clock I guess you'll answer "That doesn't count" but still. Quote Link to comment Share on other sites More sharing options...
shimside11 Posted August 30, 2006 Report Share Posted August 30, 2006 I'm still in awe of Tag's 360 chrono movement. 360,000 bph when the chrono is running. Quote Link to comment Share on other sites More sharing options...
Pugwash Posted August 30, 2006 Report Share Posted August 30, 2006 Seiko made quartz clocks with 4 ticks a second. Can't name the model. Since it's a clock I guess you'll answer "That doesn't count" but still. No problems with batteries on a clock. Now, if Steorn get their machine working in a watch, we can all have high-beat quartz! Quote Link to comment Share on other sites More sharing options...
archibald Posted August 30, 2006 Report Share Posted August 30, 2006 Name the genuine Quartz watches with sweeping hands. There's your answer. ps. a Spring Drive doesn't count. It's a $3000 precision movement from a company that sells decent Automatic movements for less than ETA. Not the one you're thinking of (Miyota?) but JLC makes (made?) a sweeping "Mechaquartz." chrono. Quote Link to comment Share on other sites More sharing options...
Pugwash Posted August 30, 2006 Report Share Posted August 30, 2006 Anyway, the point I was trying to make is that if there are hardly any sweeping quartz movements, and none that are remotely affordable, how on earth can anyone expect to see them crop up in cheap replicas. Tissot and TAG would have them first, and the fact they don't means they must be completely unfeasible, what with the price of stepper motors and the drain on batteries. Quote Link to comment Share on other sites More sharing options...
madmex Posted October 3, 2006 Report Share Posted October 3, 2006 (edited) I'm still in awe of Tag's 360 chrono movement. 360,000 bph when the chrono is running. Correction: the beat is 36,000 bph not 360,000.. if it beat that fast the friction would cause heat that would crack the spring and wear the gears very fast. That's an El Primero movement. Tag was purchased by the same umbrella group that purchased Zenith. It's the same movement that was used on the Daytona subseconds @9. Except Rolex modified the escapement with their microstella and took the beat down to 28,800. The reason some are jerkyer than others, for instance the Daytona Reps w subseconds @6, is a question of direct vs. indirect drive. Most of today's watches are direct drive, meaning the gear that moves at that rate is the one attached directly to the hand. In the case of the Daytona rep with Subseconds @ 6, there are a few gears that transition the beat, each one of them adding a little bit of play in the gearing, so the end result is jerky and irregular. This is not the watch ticking like that, but the second hand being indirectly driven by auxillary wheels adding in the little play between gears. Old watches had indirect seconds. I think the Miyota autos have indirect seconds too, because if a certain spring is not tight on them, their second hand looks like it's crazy... it jerks.. then stops until the gears catch up then jumps back etc. Regarding the quest for sweep seconds, it has been done! The Bulova Accutron and the Omega electric watches of the 60s and early 70s had electric (not quartz) movements. In a quartz movement, we know a quartz crystal oscillates at exactly that 32727(?) Hz when current is run through it. Always. So a little stepping motor, sends power to the seconds hand at that rate, to 1 second. The old electric watches had a tuning fork inside that was "excited" and the stepping motors were regulated by that. The approximate rate was 300Hz... their second hand is beautiful! It just sweeps. Unfortunately they were expensive to maintain and if something attached to the tuning fork (dirt or debris) it would change the frequency and thus the accuracy.... so they left them for Quartz which are very simple to make now. Edited October 3, 2006 by madmex Quote Link to comment Share on other sites More sharing options...
flamemax Posted April 18, 2007 Report Share Posted April 18, 2007 Hi All -*bump*ing the post as no one mentioned that the gen sweep motion can be seen on the Rolex website. go to rolex.com and look up the ExplorerII, one of the slides (the slide for the data) shows a video of the ExplorerII giving the real time and sweeping away. I hope that for the ppl who have never seen a gen rolex sweet, this will be informative and educational. Regards, Robb AKA Flamemax Quote Link to comment Share on other sites More sharing options...
World Traveller Posted February 7, 2009 Report Share Posted February 7, 2009 (edited) Great discussion here. I have a Seiko quartz watch with a chronograph that can measure in 1/5 second increments. It's pretty cool technology, fun to watch. It is not same as mechanical, but some of the Seikos are worth checking out. Also Citizen has some really cool designs. They don't get respect from some watch snobs, but I think the RWG crowd that enjoys the designs and technology will appreciate it. Edited February 7, 2009 by World Traveller Quote Link to comment Share on other sites More sharing options...
RobbieG Posted February 7, 2009 Report Share Posted February 7, 2009 FYI, folks were asking about the 2892 and here is an interesting slant on that. The gen PO is built on a 2892 ebauche with an in house escapement - the coaxial "big teeth" one that uses less lubrication and has a 10 year service interval. Because of that, the coxial escapement beats at 25.2K in the 2500c movement instead of 28.8 found in most ETA stock stuff and the 2500B found in other Omega's without the coax. This is for with production reasons, because at 28.8K, Omega can't use the larger balance wheel with that escapement. So in terms of sweep smoothness, ETA PO rep owners have a smoother sweeping watch than us gen owners. Quote Link to comment Share on other sites More sharing options...
ratchpot Posted February 8, 2009 Report Share Posted February 8, 2009 How about a 43,200 bph Breguet 5347 double tourbillon, with each beating at 21,600? Yours for 300,000 Euros. The new Jules Audemars uses a new AP escapement which (properly) beats at 43,200 bph (6 Hz) and requires no lubrication. 56 hours power reserve. Estimated retail $266,200 (approx 200,00 Euros) Quote Link to comment Share on other sites More sharing options...
maugomez Posted January 24, 2010 Report Share Posted January 24, 2010 Correction: the beat is 36,000 bph not 360,000.. if it beat that fast the friction would cause heat that would crack the spring and wear the gears very fast. Correction: yes it is a 360,000 bph movement Quote Link to comment Share on other sites More sharing options...
fuqhard Posted February 1, 2013 Report Share Posted February 1, 2013 (edited) Here is a video for you to have a look at. It pertains to the original OPs question. It is also the best demonstration of real versus fake I have seen. The video's poster never reveals which is the rep or gen, he sort of leaves it for you to decide/question/doubt. Edited February 1, 2013 by fuqhard Quote Link to comment Share on other sites More sharing options...
asciwhite Posted February 1, 2013 Report Share Posted February 1, 2013 (edited) Has anyone mentioned the Bulova Precisionist quartz sweep? Fluid I really don`t like the design though 16 bps/ 57,600 bph http://youtu.be/jeFtcjhU5i4 http://youtu.be/tiarEZ1k0M4 Edited February 1, 2013 by ASCIWhite Quote Link to comment Share on other sites More sharing options...
asciwhite Posted February 1, 2013 Report Share Posted February 1, 2013 Someone should make a Rollie "homage" with a precisionist engine. How cool would that be? Quote Link to comment Share on other sites More sharing options...
fuqhard Posted February 6, 2013 Report Share Posted February 6, 2013 (edited) Has anyone mentioned the Bulova Precisionist quartz sweep? Fluid I really don`t like the design though 16 bps/ 57,600 bph http://youtu.be/jeFtcjhU5i4 http://youtu.be/tiarEZ1k0M4 funny you posted these particular models. My father in law owns BOTH of those and I actually like them now that I've seen them in person. The crystal is curved and it is really quite stunning to look at. The sweeping second hand is very smooth on these. As I understand they move at 8 ticks per second. Edited February 6, 2013 by fuqhard Quote Link to comment Share on other sites More sharing options...
Guest blutack Posted February 7, 2013 Report Share Posted February 7, 2013 as long as eta should be same as gen Quote Link to comment Share on other sites More sharing options...
Jedi777 Posted September 26, 2013 Report Share Posted September 26, 2013 Really good information here guys Quote Link to comment Share on other sites More sharing options...
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