Blubber Pluzzler

[Dave Bunch]

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No, but the dampers are involved in the problem.

Dave Bunch
  ----- Original Message -----=20
  From: Mark Ultsch=20
  To: Pianotech=20
  Sent: Thursday, November 03, 2005 11:27 PM
  Subject: Re: Blubber Pluzzler


  Damper lever spring way too tight causing the wippen to want to rotate =
and keep the jack tucked under the hammer butt??

  If I'm way off base, feel free to enlighten me.

  I actually like to have customers watch my diagnostic work.  It gives =
me an excuse to use one of my better diagnostic methods: talking to =
myself.

  Mark Ultsch
  Madison
    ----- Original Message -----=20
    From: Dave Bunch=20
    To: pianotech@ptg.org=20
    Sent: Thursday, November 03, 2005 6:54 PM
    Subject: Blubber Pluzzler


    Hello-

    Blubbering (double striking) hammers in a vertical are not all that =
uncommon, but today I found a cause that I don't remember seeing before.

    It was a new Baldwin Hamilton studio sized piano. The customer was =
complaining that several notes in the low tenor area were not =
sustaining. When I got there I found that these few notes were double =
striking and sounding like they were blocking when played lightly. =
Actually anything up to a light/moderate keystroke.

    I checked the position of the let off rail and regulation in =
general. So far things looked fine. Moving the key down slowly produced =
let off at about 1/8" and there was sufficient key dip for plenty of =
after touch. Back checking was fine. I went to the worst one and to =
satisfy my curiosity, cranked the button down to where let off was about =
1/2". This changed nothing. The hammer was still bouncing off the top of =
the jack. Only on a very firm stroke would everything cycle through as =
it should. Most of the piano was just fine. It was these few notes.

    Well, it only took about five minutes to figure it out, but it was a =
long five minutes with the customer watching. Anyone want to guess on =
this one?

    Dave Bunch


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