Ophiuchus
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How long did suspension design take?
A bit ashamed, I've been following these posts of David's clock avidly from the beginning,
but felt so many complex questions coming on, I wanted to wait a while before asking anything.
Of all the clocks I have seen and studied in the world, David's after the original Breguet designs
are to me by far the most interesting! The design, the execution, the concept and the resonance
use are all deeply fascinating to me. I have actually hoped someday I would learn more of how
these style of clocks were designed and made- so seeing this series of posts, straight from Mr.
Walter's workshop are one of my great horological dreams come true. I am deeply thankful to
Don and David for bringing us this series, and enjoying it immensely.
I feel like I don't remember enough of my research on these from the originals to ask with proper
depth all the things I wish, but I have to start somewhere. So forgive my amateurish perspective.
If I remember correctly, the suspension design of these clocks (Davids, after the original Breguets)
was key and deeply subtle to the inducement of resonance in the twin pendulums. Something about
a slightly flexible frame attachment to the plates themselves allowed resonance to occur.
My question for David is, how long did you study the design of the originals to create your execution
of this style of suspension? I've never seen the originals in person, or even enough detailed pictures of them
to be able to even attempt to recreate one, although I absolutely want to. Were you able to get special access
to open them up and measure critical components to see how they interacted, or were cursory glances all you
needed? Will you have a post near the end explaining how the resonance effect is built in, and tuned?
Again, forgive any mistakes, my perspective is limited- but intensely interested.
A David Walter Double Pendulum Clock – Part 3, The Suspension
A David Walter Double Pendulum Clock – Part 3, The Suspension David Walter's new double pendulum perpetual calendar clock is advancing every day. For those of you who didn't see the earlier installments of this series, you can catch up by looking here: - ...
Thank you fo rthis 3rd part, David and Don! :)
Very interesting journey to follow! :) Looking forward to more! Best Blomman
Is knurling one pass or more?
Thanks Don and David for the update. Is the lathe knurling process done in one pass or more? Instintively, I guess in one pass for crisp cuts but the forces required must be huge. Multiple passes would nibble away but the precision required in X-Y-Z axes ...
yes it is.....
Knurled in a single pass and quite a lot of pressure is required for a clean knurl,it is done at a fairly slow speed of 260 rpm when done correctly it is quite fast, taking perhaps about 10-15 seconds. You got it ! Fitting a square peg into a round hole c...
How long did suspension design take?
A bit ashamed, I've been following these posts of David's clock avidly from the beginning, but felt so many complex questions coming on, I wanted to wait a while before asking anything. Of all the clocks I have seen and studied in the world, David's after...
I dont remember............
how long the original design took, quite while as I recall. Breguet softened the suspension by removing material making the support slightly felxible, I saw problems with this concept and created a support as "soft" and flexible as possble allowing me to ...
