Emil Wojcik
1651
Yes, you're correct.
At 18,000 BPH it "ticks" 5 times per second so if you look close you can easily see it "jump" those 5 steps every second, at least with a full sized second hand -- not as easy to see with a small sub-second hand.
At 21,600 BPH, it ticks 6 times per second.
28,800 BPH, 8 per second.
36,000 BPH, 10 per second.
At 36,000 the "ticks" are difficult to see, at least for me.
Technical Question
I think I know about watches, until I realize I really probably don't. (Lets keep that our little secret) Here's my question: does a manual or automatic watch with a seconds hand move like a quartz watch with the "jumps" so short it is hard to see with th...
Yes, those with a dead second.
Rolex Tru Beat 6556: Jaeger Lecoultre Geophysic True Second. Universal Time ( with True Second ) Among others! But with moves so short you cannot see it, well, afaik, no. Best, Nicolas ...
Depends on balance turning frequency.
18,000 bph - very jerky central or small seconds hand. 21,600 bph - still jerky. 28,800 bph - reasonable smooth central seconds hand. 36,000 bph - my El Primero movement small seconds hand imperceptibly smooth. Who cares?! It's a heart beat! But generally...
Yes, you're correct.
At 18,000 BPH it "ticks" 5 times per second so if you look close you can easily see it "jump" those 5 steps every second, at least with a full sized second hand -- not as easy to see with a small sub-second hand. At 21,600 BPH, it ticks 6 times per second...
Or you can opt for a Grand Seiko Spring Drive with no ticks whatsoever.
Smooth as glass and very satisfying to watch the clean sweep of the seconds hand.
Although not 100% mechanical, the smoothest may be this one...
Bulova Accutron 214 movement from the 1960's. The tuning fork vibrates at 360 Hz. The index wheel and pawl turn that vibration into a very smooth motion. It appears as an electric wall clock to the naked eye, All the best... HEO ...
