thumping dampers

[Joe And Penny Goss]

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Thanks thought that was what you meant <G>

Joe Goss RPT
Mother Goose Tools
imatunr@srvinet.com
www.mothergoosetools.com
  ----- Original Message -----=20
  From: Dean May=20
  To: 'Pianotech'=20
  Sent: Tuesday, January 10, 2006 7:05 AM
  Subject: RE: thumping dampers


  Yes, under the keybed. Sorry I wasn't clear. It should be directly =
above the back of the pedal or pedal lift rod into the bottom side of =
the keybed. The purpose of the stop is to provide an adjustable limit to =
the upward travel of the lift rod.

  =20

  Dean

  Dean May             cell 812.239.3359

  PianoRebuilders.com   812.235.5272

  Terre Haute IN  47802

  =20

  -----Original Message-----
  From: Joe And Penny Goss [mailto:imatunr@srvinet.com]=20
  Sent: Tuesday, January 10, 2006 9:05 AM
  To: deanmay@pianorebuilders.com; Pianotech
  Subject: Re: thumping dampers

  =20

  Hi Dean,

  Do you mean from under the key bed?

  Joe Goss RPT
  Mother Goose Tools
  imatunr@srvinet.com
  www.mothergoosetools.com

    ----- Original Message -----=20

    From: Dean May=20

    To: 'Pianotech'=20

    Sent: Tuesday, January 10, 2006 6:37 AM

    Subject: RE: thumping dampers

    =20

    To minimize thumping dampers you should minimize their travel. There =
should be a stop screwed into the keybed directly above the pedal lift =
rod. Adjust the stop down until the bicord dampers are just coming off =
the string. To adjust it really "hot" the bottoms of the bicords do not =
have to clear the top of the string- leave some of the wedge down =
between the strings.=20

    =20

    As you minimize the lift off the strings you are also minimizing the =
dampers' return velocity, which will also minimize the thumping.=20

    =20

    BTW, if there is no stop screw there, just put one in. A 1/4 X 1 =
inch hex bolt works great. Drill a hole in the keybed and thread the =
bolt into it. Glue a piece of felt on top of the trapwork lever and, =
viola, you have a stop adjustment.=20

    =20

    Dean

    Dean May             cell 812.239.3359

    PianoRebuilders.com   812.235.5272

    Terre Haute IN  47802

    =20

    -----Original Message-----
    From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] =
On Behalf Of James Grebe
    Sent: Tuesday, January 10, 2006 8:25 AM
    To: Pianotech
    Subject: Re: thumping dampers

    =20

    Move the mic further away from the dampers.  Most place it too =
close.

    James

    James Grebe   Piano Tuning & Repair   Member of M.P.T. =20
    R.P.T. of the P.T.G. for over 30 years.   "Member of the Year" in =
1989
       Creator of Handsome Hardwood Caster Cups, Piano Benches, Writing =
Instruments
    (314) 845-8282   1526 Raspberry Lane   Arnold, MO 63010
    BECOME WHAT YOU BELIEVE!
    pianoman@accessus.net

      ----- Original Message -----=20

      From: richard.ucci@att.net=20

      To: pianotech@ptg.org=20

      Sent: Monday, January 09, 2006 7:59 PM

      Subject: thumping dampers

      =20

      Hi Listers,

      =20

      Client with a new Yamaha ga-1 is complaining that the dampers make =
a thumping noise when his foot is taken off the sustain pedal. He is =
doing some recording and it is very noticable to him. Other than =
changing the spring to one with less tension , what would be a solution =
to his problem?

      =20

      Thanks,

      Rick Ucci/Ucci Piano=20

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