I would kindly like to know if when checking the tightness of the tuning pins in an old piano, it is standard practice to check them all or just a sample!!
Naturally, the tuning pin is under the tension of the string: how does this affect the perception of greater or lesser tightness of the pin?
Should one try by turning the pin both clockwise and counter-clockwise, or only in one direction??
Should the length of the key also be considered? I believe a longer key gives a sense of less effort when turning the pin!!
Last question 🙂 If in a piano one or more strings go out of tune more significantly than others, could it be a sign that the relative tuning pin has "loosened" and therefore no longer holds?
Checking the tightness of the pedals requires experience; usually, one tests several pedals in different regions, and obviously, the more they are tested, the better. In any case, to be sure of what you are getting, I advise you to go with a technician you trust.
Yes, usually pedals hold less if they go out of tune easily. Regards
Control can be done by zones. While playing, one must immediately identify the areas that are most out of tune. If some tuning pins are completely lacking stability, it is necessary to check if there are cracks in the pinblock, which is easy on a grand piano but more difficult on an upright. Turn the tuning key in the direction of tightening and verify the consistency of its hold.
The lack of stability in the tuning pins can only be remedied by replacing them (along with the strings, naturally!!!). A demanding and meticulous job, but one that can bring life back to the instrument. The pins must be slightly larger in size, depending on the shrinkage of the hole. However, if there were cracks in the pinblock, doing this would only make things worse. In short, it is an intervention that must be fully evaluated, also in relation to the tension on the soundboard.
Of course, always the technician, of course! It was just my curiosity.
As far as I know, the soundboard in antique pianos consisted of solid wood, which cracks much more easily compared to modern ones made of special plywood.
I can't recall right now, but how can one view the soundboard in a grand piano? If I'm not mistaken, looking at the piano from above, you see the cast iron frame first!!??
The topic is truly fascinating... excuse me for too many questions!! (there would be hundreds... to tell the truth)
