[pianotech] Interesting action on Yamaha YUA

[Ken & Pat Gerler]

I watched the video clip on youtube and it looks like the hammer is acting like there is a repetition lever action of a grand in the operation. Did/does the hammer spring pull the hammer forward?

Ken Gerler
  ----- Original Message ----- 
  From: Ed Sutton 
  To: pianotech at ptg.org 
  Sent: Monday, July 06, 2009 9:38 PM
  Subject: Re: [pianotech] Interesting action on Yamaha YUA


  Ryan-

  What is the effect on pianissimo playing?

  Ed Sutton
    ----- Original Message ----- 
    From: Ryan Sowers 
    To: pianotech at ptg.org 
    Sent: Monday, July 06, 2009 9:59 PM
    Subject: Re: [pianotech] Interesting action on Yamaha YUA


    I uploaded a little video clip to youtube showing how the repetition works. I have also realized that the action needs no perceptible lost motion to function well. Sorry the quality isn't better. 

    http://www.youtube.com/watch?v=hyubzuhi2bY

    I discovered I could eliminate the noise of the spring by needling the escaine (it seems like escaine) with a chopstick voicing tool. It can conveniently be done without removing the action. 

    -- 
    Ryan Sowers, RPT
    Puget Sound Chapter
    Olympia, WA
    www.pianova.net
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