KeyboardFunction and Construction• The keyboard pivots at the balance pin and operates on the principle of the seesaw. It transmits the movements of the performer's fingers to the piano action.
• In grand pianos, as shown in the diagram below, the placement of the balance pin is in a 2:1 ratio to the effective length of the key. This is a more efficient ratio that the 3:2 ratio used in upright pianos. This makes the keyboard of the grand piano superior to the upright keyboard for a playability.
Major Points• To give a good touch, Yamaha has stressed the relation of the piano keys to the action. The keys have been adjusted so that they operate smoothly and freely on the balance and front pins, resulting in movements of keys that most nearly match the natural movements of the human fingers.
• Yamaha's construction features a high quality bushing cloth that is exclusive to Yamaha.
• Yamaha grand piano keyboards use fir and spruce, both strong and durable woods. After being naturally seasoned for long periods of time, these woods then receive additional seasoning in Yamaha's computer controlled kilns.
