Dear Pianoexpert, I have a doubt that is bothering me; reviewing many, many times a video on Y.T. about the dynamics of key action and the subsequent movement of the repetition lever, hammer, etc., etc., I have formed my own personal idea. I noticed that when the repetition lever reaches the escapement point, it bypasses it and the repetition lever stops under the drop screw of the hammer rail; at that precise instant, a second escapement occurs, and it is precisely because the tip of the escapement lever is free to "escape" from one side... etc., etc. I am sure you will help me understand better... in the meantime, thank you
In reality, when the key is depressed, the hammer strikes the string even before the escapement lever escapes under the repetition lever. This occurs with a fairly decisive depression. So you feel the string being struck and then you see the lever "escaping." The repetition tangent (or lever) lowers and the hammer falls (if played strongly, it rests on the hammer rest; otherwise, it falls by one or two millimeters). This does not happen in a "pianissimo" touch, because the key is depressed slowly and the jack and hammer rise slowly. You have the precise sensation that it is the very last little tap at the bottom of the key that generates the decisive push toward the string. Sometimes it is precisely the escapement lever which, by escaping under the repetition lever in ppp, determines the small and sweet decisive push toward the string (purposefully, everything must be well regulated, otherwise this little tap, in ppp, will not generate sound).
In reality, it is always the escapement lever that determines the hammer's push toward the string. But we have two different dynamics and two different sensations.
THANK YOU!!!! Maestro, I knew I could count on a PIANOEXPERT; in fact, rewatching the video and with your precise answer "all the mists" have dissipated.
Again THANK YOU and COMPLIMENTS FOR YOUR CULTURAL AND TECHNICAL DEPTH regarding piano technology; by the way, why don't you create a nice manual on piano technology? I would be ready to purchase the first 10 volumes.
