robert10
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Tourbillon - right a wrong, part II
Hi guys, here's a bit more about the tourbillon's influence on the accuracy of timekeeping in a wristwatch.
Stephen Forsey, from Greubel Forsey has given a fantastic presentation at the Horological Society of New York entitled "The History of the Tourbillon"
Youtube link: https://youtu.be/5hwibDUvcWw
34 min into the presentation, Greubel Forsey explains the results of their laboratory test of an escapement and balance wheel in 3 setups,
1. Where it is fixed - no tourbilon
2. In a tourbillon
3. In a double tourbillon one of which is tilted in 30 degrees
I have made a screen dump from the presentation which shows the results of their test in 6 positions of the accuracy of time keeping
Explanation of the 6 positions in which the watch is tested:
VB=Vertical Bass (Crown Down)
VG=Vertical Left (Crown Left)
VH=Vertical Skin (Crown Up)
VD=Vertical Droit (Crown Right)
HH=Horizontal Skin (Dial Up)
HB=Horizontal Bass (Dial Down)
The closer the curves are to 0, the better the accuracy of the wristwatch
I can highly recommend watching the whole video.
Conclusion; A quality tourbillon in a wristwatch improve time keeping
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Brilliant post, Robert!
Thank You so much for putting it together. Highly appreciated. Yes the lecture with Stephen Forsey is great. Also, don’t miss the other great videos from the Horological Society of New York. Best Christian
