thumping dampers

[Joe And Penny Goss]

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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


  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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