How do you know if a watch is good? How do you know if a vintage watch is in good condition? How to know if any of the watches in our collection needs service?
All these questions can have an easy solution, the breadth of the flyer.
The width of the steering wheel is the main indicator of the performance of the watch or its health. A good watch that is in good health must have a good width of the steering wheel. This is measured in degrees of rotation of the same and these are the values between which it must be.
Vintage watches:
In a horizontal position, from 180 to 315 degrees.
Vertical position. From 150 to 250 degrees.
New watches:
In horizontal position. From 250 to 315 degrees.
Upright from 220 to 270 degrees.
You can see that in vertical position it is normal for the steering wheel to lose amplitude, since the axle pivots all rest on their sides on the rubies and this increases the coefficient of friction. When the gauge is in a horizontal position, the shafts rest only on the lower pivot, reducing the coefficient of friction as if it were a spinning top.
A low amplitude of the steering wheel is an indicator that something is wrong. The possible reasons are many but I will list a few.
Dirt or dry oil on the pivots.
Deformed, rusty or worn pivots.
Deformed spiral.
An amplitude that exceeds 315 degrees is also a symptom of a malfunction, since the ellipse will hit the fork when turning completely and returning to the point of rest.
But in this case the possible problems are concentrated in the spiral:
Deformed, magnetized or oiled spiral.
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