[CAUT] after ring on bass damper

[Joe Goss]

Wouldn't weights only be treating the symptom>
Joe Goss BSMusEd MMusEd RPT
imatunr at srvinet.com
www.mothergoosetools.com
  ----- Original Message ----- 
  From: wimblees at aol.com 
  To: ilvey at sbcglobal.net ; caut at ptg.org 
  Sent: Sunday, August 02, 2009 9:38 PM
  Subject: Re: [CAUT] after ring on bass damper


  David

  I thought I could solve the problem that way, too. But on all Samick products, there are already two weights in the levers, and there's no more room to put any more. 
    

  Wim

  -----Original Message-----
  From: David Ilvedson <ilvey at sbcglobal.net>
  To: caut at ptg.org
  Sent: Sat, Aug 1, 2009 6:04 pm
  Subject: Re: [CAUT] after ring on bass damper


Wim,

If the rings goes away when you add a little pressure to the damper head, you 
have isolated the problem to that damper.   I'd check the weight/spring tension 
on the damper.  Is it different than the dampers around it?   I have a Sty D 
that has some damper over-ring, not isolated.   I'm thinking the bass dampers 
don't have enough damper weight/tension...is there measurement for this?   

David Ilvedson, RPT
Pacifica, CA  94044

----- Original message ----------------------------------------
From: "David Love" <davidlovepianos at comcast.net>
To: caut at ptg.org
Received: 8/1/2009 8:46:35 PM
Subject: Re: [CAUT] after ring on bass damper


>Try working with the seating of the damper fore and aft.  Tilt the head
>slightly forward or backward until you get it quiet.  Sometimes the location
>of the node creates some problems that careful seating will take care of.

> 

>David Love

>www.davidlovepianos.com

> 

>From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of
>wimblees at aol.com
>Sent: Saturday, August 01, 2009 8:04 PM
>To: Pianotech at PTG.org; caut at ptg.org
>Subject: [CAUT] after ring on bass damper

> 

>I've got a Kohler & Campbell 5'9" grand that has very noticeable after ring
>on B1 and C2. At the convention I asked Roger Jolly about it, and he showed
>me how to "voice" the damper felt, by sticking a long needle into the felt,
>first from the front, and then from the back. He demonstrated this technique
>on several notes on a couple of different pianos, and it worked quite well.
>But yesterday I went to the piano in question, and tried to do the same
>thing. I got the damper to work a little better, but there is still a lot of
>after ring. 

>This is not a sympathetic vibration coming from another string. The damper
>is properly seated, with plenty of follow through. The actual ring of the
>string stops, but there is excessive after ring. It goes away when I put
>just a little bit of pressure on the damper head.
> 
>I'm open to other suggestions. 

>Willem (Wim) Blees, RPT
>Piano Tuner/Technician
>Mililani, Oahu, HI
>808-349-2943
>Author of: 
>The Business of Piano Tuning
>available from Potter Press
>www.pianotuning.com

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