The Parts of a Grand Piano Action
Two screws hold each grand piano action bracket to the key frame so the action, keys, and key frame all come out of the piano in one piece. The Steinway tubular metallic action has wooden rails encased in extruded metal tubing soldered to the brackets.
Some parts of the grand piano mechanism have the same names as their counterparts in the vertical piano action, including the keys, capstans, wippens, jacks, hammer shanks, hammers, backchecks, dampers.
As in an upright, the key pushes on the wippen, the wippen on the jack, and the jack on the hammer.
From here on, the resemblance ends, because the grand piano action has an additional assembly on each wippen called the repetition lever.
This lever enables the grand piano mechanism to repeat notes faster than the vertical can.
Some parts of the grand piano mechanism have the same names as their counterparts in the vertical piano action, including the keys, capstans, wippens, jacks, hammer shanks, hammers, backchecks, dampers.
As in an upright, the key pushes on the wippen, the wippen on the jack, and the jack on the hammer.
From here on, the resemblance ends, because the grand piano action has an additional assembly on each wippen called the repetition lever.
This lever enables the grand piano mechanism to repeat notes faster than the vertical can.
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