Action Position Adjustment

[Farrell]

Hi Roger - I don't think the hammers have been filed - doesn't look like it. Yeah, they are definitely over-centering. We'll see what $$ will allow me to do - mom & dad don't play and junior is just starting lessons. I thought she being willing to do a full action regulation to correct the 12 mm let-off and 3 mm aftertouch was about as far as I could push her........

Thanks for the ideas though. I suspect this piano is 30+ years old and the hammers have a fair bit of wear on them - I'd hate to spend much time ($$) perfecting an old hammers like that. We'll see.

Terry Farrell
  ----- Original Message ----- 
  From: Roger Jolly 
  To: Pianotech List 
  Sent: Saturday, September 02, 2006 12:51 AM
  Subject: Re: Action Position Adjustment


  Hi Terry,
                  Have the hammers been filed a few times, and are they now are over centreing?
  If key slip and key board cover all look good with the action,  pop the hammers off and hang them back a few mm's.
  If hammers are over centreing, ream the holes a little so can tilt them back a tad.

  I know watch out for some geometry issues =-O

  Regards Roger



  At 05:23 PM 9/1/2006, you wrote:

      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

    Terry,

    I my first year of piano work, working at Sydney's distributor for Kawai, we regularly moved the action and keyboard assembly back to correct for strike ratio problems in the high treble. Our solution was to plane a bit off the back of the keyframe also.

    Ron O.



-- 
OVERS PIANOS - SYDNEY
       Grand Piano Manufacturers
    _______________________

    Web http://overspianos.com.au
    mailto:ron at overspianos.com.au
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