waroftheworldsrp

  action so when we move the key we begin    a series of movements on the escapement    action as we see the back end rise we    see the wippen raised we see the jack   raises and we see the repetition lever    move also so let's see how that works in    action okay now the escapement action is    what gives us that click feel that    you're accustomed to on a acoustic piano     and on high-quality digital pianos and    that click feel comes from the jack here    sliding off of this rounded piece of    felt and leather and it's called the    knuckle because it's shaped just like a     knuckle in your finger and what happens    is as we raise obviously we're raising    the    Schank we're raising the hammer but at    some point about two-thirds of the way    up you're going to see the jack slip off    behind the knuckle and that's the clique    that we're customed to feeling why does    that happen well that allows for a much   faster repetitive motion and hence why    we have the repetition hammer there and    then the hammer itself continues to move    on its own momentum at that point to the    strength that's why we can actually play    very slowly and quietly and press a key    and not get any sound on an acoustic    piano because the key isn't moving fast     enough to send the hammer all the way up    to the string with its own momentum at    that point now in the escapement    mechanism there's a couple things that    need to happen simultaneously take a    look here at the drop screw and the let    off button now as we raise the action by    pressing the key we need to make contact    with these points here and here  yamaha p45 vs p115   simultaneously in a properly adjusted    piano that happens now what happens is    that over time as a piano ages and we're     talking about many many years is that    the felt and the cushions wear down and    it may need to be adjusted or replaced    in order to have proper timing of the    key this is important because this is    what allows the action to respond right    if it's not adjusted and if the   materials are worn down in older pianos    the camera is not going to feel right    you're going to the keys you're going to    play and it's not going to respond    appropriately a couple more components    of the action let's look down here at    the end of the key we have the back    check and we have the under lever now    the end of the key arm is going to make