Action Position Adjustment

David Ilvedson ilvey at sbcglobal.net
Fri Sep 1 17:12:43 MDT 2006


When you say "clearly the action is too far forward"...how did you come to that conclusion?
Did you experiment but lifting the keyframe at the front to tip the hammer back in a bit?   That would tell you if that is the problem...I think IF the action does need to go in a bit...planeing the back of the key frame is doable, but the cheekblocks are not going to move and neither is the fallboard...make sure you have space between the sharps and fallboard...really, I'm thinking the best thing to is to rehang the top two sections with more of overbore to get them away from the capo...
David Ilvedson, RPT
Pacifica, CA 94044





Original message
From: Farrell 
To: pianotech at ptg.org
Received: 9/1/2006 2:06:27 PM
Subject: Action Position Adjustment


Older Kawai grand. The piano lacks tone in the top two octaves - progressively gets worse toward C88. Cearly, C88 is hitting the string at the capo - clearly the action is too far forward. However, the key bed has three or four wooden stop blocks screwed to it that prevent the action from being moved further back (what are those blocks called?). I have not run into this before. What is the best fix? Removing, plugging, and redrilling the stop blocks would be difficult in the cramped quarters of the action cavity. Should I just carefully plane/cut off a few millimeters from the rear rail of the action frame and then position with the adjustable thingees (what are they called?) in the cheek blocks? 
 
Seems to me it's one or the other. Any better suggestions? Thanks.
 
Terry Farrell
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