First Pitch Raise

[hubert liverman]

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Matthew,=20
Joe's post brings up mating points. If the hammer and damper felts are =
very hard,the pitch raise may change them. You may have not noticed it =
before as they were "comfortable".After the raise the partials will =
'sing',and not damp properly. This is noticeable in older pianos that =
have not been mantained properly. Hammer voicing/filing and damper =
regulation/replacement may be in order.

Hubert Liverman
Tuner/tech
Opelika,AL
  ----- Original Message -----=20
  From: Joe And Penny Goss=20
  To: Pianotech=20
  Sent: Sunday, February 06, 2005 10:31 AM
  Subject: Re: First Pitch Raise


  Matthew,
  You do not tell us how much the pitch raise was.
  I find that a pitch raise of over 50 cents, will change the string =
level, so that the dampers may not mate with the new level of the =
strings, Add to that the higher tension will give the strings more =
energy in reserve, so that when struck with the hammer, the string may =
not stop its vibration as quickly.
  Try this, on a piano that is way under pitch (50 cents or more,)  =
using a string level, find a note that IS LEVEL near as you can to the =
strike point. Now bring the note up to pitch and recheck the level of =
the strings.
  Joe Goss RPT
  Mother Goose Tools
  imatunr@srvinet.com
  www.mothergoosetools.com
    ----- Original Message -----=20
    From: Matthew Todd=20
    To: Pianotech=20
    Sent: Saturday, February 05, 2005 7:20 PM
    Subject: Re: First Pitch Raise


      I did raise the dampers while I strip muted.

      Matthew



        =20

      However, here's something that you might actually have done to =
cause this.  If you don't raise the damper pedal when you put in your =
strip mute, you can compress the damper felt.   This could cause the =
problem.

      Tom Sivak
      Chicago PTG Associate=20



    Matthew Todd
    Todd Piano Works
    Piano Tuner/Technician
    Tuning - Repairing - Regulating=20


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