[CAUT] after ring on bass damper

[David Ilvedson]

I was trying to see if there was a lack of weight problem...i.e. broken spring, whatever.   Obviously, you simply lift neighboring dampers and if they feel the same...that aint the problem...I'd consider putting on a longer damper...maybe lift the string that is ringing...leveling strings...

David Ilvedson, RPT
Pacifica, CA  94044

----- Original message ----------------------------------------
From: "Joe Goss" <imatunr at srvinet.com>
To: caut at ptg.org
Received: 8/2/2009 8:54:17 PM
Subject: Re: [CAUT] after ring on bass damper


>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