Progress of the new project "Classic Resonance" can be found also in my blog that will focus at a moment mainly for this task in progress.
Click one of the boxes below to enter Blog Pages !
Classic Resonance Wristwatch project,...
Jul 21
After many considerations I decided to start a new project. On this dedicated page I will update the progress of the project time-to-time.
“Koivukoski Classic Resonance Watch”.
Very interesting indeed –
Something new is coming to enhance my Classic watch design with a new complication – namely Resonance.
In general synchronization and resonance are related but distinct concepts. Below are some explanations of the terms. In watch industry phenomena is called simply "resonance" to make things easier to discuss.
What is a simple definition of resonance?
Resonance is the occurrence of a vibrating object causing another object to vibrate a higher amplitude. Resonance happens when the frequency of the initial object's vibration matches the resonant frequency or natural frequency of the second object.
What is a simple definition of synchronisation?
Synchronization refers to the alignment or coordination of the phases or frequencies of two or more oscillating or periodic systems. For example, when two pendulum clocks are placed close to each other, their pendulums may eventually synchronize and begin swinging in unison, even if they started out of sync. This is because the small mechanical interactions between the clocks cause them to "lock in" to a common frequency.
For physicists, synchronization is particularly intriguing in inert systems. Place two identical metronomes on a wooden bar mounted on two fizzy-drink cans, and you’ll find that the rhythms of these mechanical devices – used by musicians to keep time – can synchronize within minutes or even seconds.
First instance of resonance in horology goes back 1655 when Christiaan Huygens (a famous dutch scientist and inventor of the pendulum clock) first noticed in his workshop that if he had multiple pendulum clocks suspended from the same wooden beam, over time the swing of these pendulums would synchronise. If he disrupted this and set them independently, he noticed they would again automatically sync up once more.
An interesting story is in Physic World:
See https://physicsworld.com/a/the-secret-of-the-synchronized-pendulums/
Now, that was general writing about the history and terminology.
How to implement all this to a wristwatch that will be wearing by you, perhaps?
Watch diameter only 38 mm? Fits nicely to your wrist!
Weight 30 gram or less? Can it be done as light? Very comfortable to wear with evening dress, tuxedo, ... ?,
Titanium case? Partly open dial?
In my mind a flow of 3D models, drawings, materials, designs,... just name it - comes together as a concept to be materialised as a elegant Classic Resonance time piece.
Needs renders?
To be continued,...
Balance Wheel and Coupling Thoughts,...
Jul 31
Balance Wheels and coupling thoughts:
Some initial thoughts of the design of the balance wheels, how they are coupled to make synchronization of the oscillators possible. What are the materials to be used. How do they behave and how they will finally land to design that is elegant and works.
Balance Wheels:
Designing a balance wheel for a resonance wristwatch involves several critical considerations to ensure precision, low air resistance, and the use of a special alloy for enhanced performance.
Material Selection:
Special Alloy: low-density, high-strength alloy with stability, minimal thermal expansion, and high fatigue resistance.
Design Geometry
Shape: smooth ring to reduce air resistance. The spokes should be thin and aerodynamic to minimize drag.
Weight Distribution: Ensure an even distribution of mass around the wheel to maintain balance. balance will be poised from underneath.
Polishing:
Ensure the surface is highly polished to reduce friction and air resistance.
Early idea of coupling,...
A separate rigid rod to couple the stud holders to enable resonance to travel from wheel A to wheel B. Interesting will be the material selection and its ability to transfer vibrations needed to make sync possible.
Synchronization of Oscillators:
In a resonance watch, two balance wheels or oscillators are positioned close to each other. Coupling the stud holders ensures these oscillators can interact and synchronize. This interaction causes the oscillators to resonate at the same frequency, stabilizing their movements.
Coupling and pondering:
I´m still hesitating on the design whether to have it as a flat rod or cylindrical. Thought I might lean on future iterations of the design on a more flat piece of a resonating medium. What I find infinitely more interesting decision or a challenge is the choosing of the material of the coupling rod. Current ideas that i have had for material are silicon, invar, beryllium copper, Nivarox and titanium. Silicon would be my number 1 pick but probably have to forget about it for now since my financial realities don’t allow of manufacturing silicon parts... I find myself thinking of beryllium copper, titanium and nivarox. the two first would allow superior thermal stability but I don’t think I would sacrifice nothing by deciding Nivarox as the material for the coupling rod. It has good thermal compensation, antimagnetic properties and consistent elasticity. which are all essential for maintaining resonance.
How does the watch eventually look? What will be the design?
How all this will come together?
To be continued,…
Aug 7
Design of The Resonance Wristwatch
After several iterations I have come to conclusion that fly wheels will be visible on the dial side and with double second hands to enjoy.
Case will be in three parts: 1. Satin back bezel with sapphire window to see movement, 2) Mid case – polished and 3) Satin front bezel. Case will be handcrafted from high grade titanium.
Main dial is fabricated from titanium. Pad printed markers. Face will have blue hue high lights as cap stones – Montana Sapphires - that will beautifully enhance Titanium case color spectrum. Hour and minute subdial as well seconds are silver fabricated using thermal and acid treatment to be white. Same applies to fly wheel background.
In-house movement will come together a bit later, however main decisions and design principles are done. Detailed design and renders in progress and will be revealed accordingly. Some detailed decision still needs to do on materials and such.
Want to buy?
On the lefthand upper corner you can see number 00 – that is a serial number. Available production series number – please contact to make a reservation
reima.koivukoski@kronowerk.com
Custom work options?
Unfortunately custom work options are not available for the production series pieces.
Details:
- Hand wound. Winding from backside.
- Time setting with hidden crown.
- Power reserve approx. 42-45 hours.
- Lift angle 50°.
- 38 jewels.
- Vibrations per hour 21600 bph (3Hz).
- Anti-shock device: own.
To be continued...
Aug 27
Parts fabrication commenced
Technical drawings are coming together, and parts fabrication is commenced.
On picture below some parts – as a scale there is a normal ball point pen.
The process starts of from lathing out the blanks and the cutting the leaf. After these steps the accurate dimensions are cut in a lathe and the part is fully polished.
Challenging to fabricate and needs total concentration complete.
Here I would like to give some updates of the drawings. Case is very light and comfortable having diameter of 38 mm.
