DonCorson
[AHCI]
3358
Multiple balance wheels
Hi Sonseik,
Let me try and answer your questions.
Each balance in a watch is coupled with a hairspring.
Together they make an oscillating system which can be used to create a frequency which can then by used to measure the time.
Watches that have more than one balance wheel (oscillator) try to improve the timekeeping by one of the following two strategies:
1) By averaging the frequencies of the oscillators with a differential as in watches such as the MB&F Legacy Machine 2.
2) By coupling the oscillators so they beat synchronously such as in the F-P Journe Resonance watch.
The frequency of the oscillation (i.e. speed of the vibration) is set by the inertia of the balance wheel and the spring constant of the hairspring and is not effected by the quantity of oscillators.
Adding pistons increases the power that the engine can produce, but does not change the rotational speed of the engine.
I hope that helps,
Don
Hello. About double balance wheel ( vibration)
Multiple balance wheels