Advertisement
Table of Contents
Advertisement
Table of Contents
Related Manuals for Steinway & Sons S
Summary of Contents for Steinway & Sons S
- Page 1 World-Wide Technical Reference Guide Grand Regulation...
-
Page 2: Table Of Contents
TABLE OF CONTENTS GRAND ACTION DIAGRAM ..................3 REGULATE FLY POSITION..................... 4 REGULATE BALANCIER HEIGHT................. 5 BLOW DISTANCE AND HAMMER LINE..............6 LET-OFF (ESCAPEMENT) ....................7 HAMMER DROP....................... 8 KEY DIP ..........................9 SHARP KEY DIP ......................10 AFTERTOUCH ........................ 11 BACKCHECKS......................... -
Page 3: Grand Action Diagram
It is important for the technician to understand the interrela- tionship between regulation procedures and how they affect the instrument’s performance, and to use this understanding in determining individual needs of the instrument and the performer. -
Page 4: Regulate Fly Position
REGULATE FLY POSITION Background: The fly position is critical in obtaining a controllable stroke of the hammer. If the fly position is too far forward, it will escape too early and the hammer will have little control, little power, and possibly a misfire. If the fly position is too deep under the knuckle, the result will be excess friction and poor repetition. -
Page 5: Regulate Balancier Height
The height of the balancier is regulated by raising or lowering the balancier adjustment screw. Step 2. Final adjustment—Final adjustments are made so that when the fly’s tender is depressed and released, the fly returns to its correct position. To eliminate any lost motion, feel for a slight drag as the fly passes under the knuckle. -
Page 6: Blow Distance And Hammer Line
The blow distance is originally set in the factory at: 1¾" for Models S M L O A B 1⅞" for Models C D This adjustment should be made in each section of the scale as string height within each instrument continually changes from bass to treble. -
Page 7: Let-Off (Escapement)
ADJUST LET-OFF (ESCAPEMENT) Background: The let-off adjustment is critical to achieve both soft and loud playing. If the let-off is adjusted too far from the string, the hammer will escape too early. This will result in difficulty to control soft playing, at the same time decreasing overall power. The purpose of this escapement is to assure absolute freedom of the hammer during its contact with the strings. -
Page 8: Hammer Drop
REGULATE HAMMER DROP Background: Setting the hammer drop is the first escapement of the “double escapement” action. Adjusting the drop screw disengages the balancier from the power stroke of the key, and is set to avoid double striking of the hammer. The hammer should drop no more than 1/16"... -
Page 9: Key Dip
ADJUST KEY DIP Background: Key dip represents a key’s full depth of travel. The factory regulates key dip at .400" for all grands. It should be noted the key dip may vary within the suggested range of .390 inches and .420 inches for any Steinway grand piano. However, extremely shallow key dip will result in lost power. -
Page 10: Sharp Key Dip
Step 2. Set key dip on sharps—When adjusting for key dip on the sharps, duplicate the “amount of aftertouch” from the naturals. Hints: It is better to use the smallest number of front rail paper punching combinations to avoid sponginess in the keyboard. It is important to use consistent force on each key when checking for key dip. -
Page 11: Aftertouch
ADJUST AFTERTOUCH Background: Aftertouch is the amount the key travels past the point of let-off. Key dip establishes the amount of aftertouch; however, aftertouch is also affected by blow distance (capstan adjustment), and key level. HOW: The amount of aftertouch can vary; however, normally it should be 1/16" to 3/64", or approximately the thickness of a new penny. -
Page 12: Backchecks
REGULATE BACKCHECKS Background : Correct setting of the backcheck / hammer height is crucial for repetition. When properly adjusted, the backcheck will “catch” the hammer, allowing for the fly to return easily under the knuckle, positioning itself for another strike. If the hammer is “caught” too low, it will travel a greater distance, increasing the amount of time it takes for the fly to return under the knuckle. - Page 13 Step 3. Regulate backchecking height—By hand, adjust the angle of the backcheck head so that the hammer is “checked” as high as possible. This height should be consistent through- out the keyboard. Guides should be adjusted with the action in the piano before completing this regulation step on the bench.
-
Page 14: Repetition Springs
SET REPETITION SPRINGS Background : The repetition spring is designed to aid the repetition assembly back to its rest position, and, therefore, allowing the fly to quickly re-engage for a fast re-strike. The setting of this spring is crucial for attaining repetition. As the hammer rebounds from the string, the fly is still disengaged. - Page 15 Step 3. To decrease the spring strength—Use a spring hook tool to remove the spring from the grub, and deflect the spring downwards. Reinsert and check as in Step 1. A final inspection of spring settings should be made with the action in the piano. decreasing spring tension NOTE: The strength of the repetition spring should be adjusted so that each hammer rises steadily to the point where its motion can be noticed by feel in the key.
-
Page 16: Keyframe Shift Screw
ADJUST KEYFRAME SHIFT SCREW Background: The keyframe shift screw is adjusted so that when the keyframe is in its shifted position, the left string of the trichords is missed by the hammer. The keyframe shift screw can also be adjusted for individual requirements. It is acceptable for the shift of the keyframe to vary.
Need help?
Do you have a question about the S and is the answer not in the manual?
Questions and answers