Interview with Tim and Bart Grönefeld
Last month Tim and Bart Grönefeld launched the Grönefeld One Hertz, a unique wristwatch with an independent deadbeat seconds, also known as seconde morte. The One Hertz is the second watch from the two brothers from the Netherlands, both highly skilled wa...
very intersting
nice complication interesting to see in nowadays wrist watches,i personally consider it a constrain free complication , would love to see live pics of the watch , elegant , simple and pleasent looking dial . though i wonder about the term affordable in wh...
When will we see working watches ?
Thank you for making this enlightening interview for us Frank. Can you tell us more about the problems encountrered in making a dead-seconds movement? "At first we thought that we could make the watch with fewer components; however, after making the movem...
Originally the One Hertz was going to have normal deadbeat seconds
driven from the mainspring barrel, but the Grönfelds decided that independent deadbeat seconds - with a seperate power source and gear train - would provide better performance. First deliveries are anticipated for December 2010/January 2011.
looking forward in seeing the final watch. One question though
in the interview you mention that it is the world's first independent dead seconds, what does the "independent" mean? Others for example Journe and Habring also have dead seconds watches so what differentiates the Grönefeld's to theirs?
Alex, i guess the fact the in your examples the dead-seconds mechanism...
is part of the clockwork, whereas with the Grönefeld's is powered by a secondary gear train that is independent of the gear train for the hour and minute indication! Best, Magnus
Indeed, the secondary gear train is...
....like Magnus says, dedicated for the deadbeat seconds mechanism. This way, the complication's effect on the entire movement's performance is reduced to the minimum, which is less than without the secondary gear train. Cheers, Frank
Not just a secondary gear train,
the deadbeat seconds has its own (independent) barrel as well.
Correct....
Thanx Ian, i forgot to mention the secondary geartrain is powered by it's own mainspring barrel.
Good looking new model
It's amazing how fast after their first model, the brothers could come up with a new watch. I am really looking forward to seeing this new watch in the flesh, since I also missed their last presentation, when the sketches were presented. Thanks for the in...