[CAUT] after ring on bass damper

[David Love]

Can you isolate which string it is: right or left? Or is it both?

 

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 8:59 PM
To: caut at ptg.org
Subject: Re: [CAUT] after ring on bass damper

 

Thanks for that tip, but I think that's the first thing I tried to do. 

Wim

-----Original Message-----
From: David Love <davidlovepianos at comcast.net>
To: caut at ptg.org
Sent: Sat, Aug 1, 2009 5:46 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

 <http://www.davidlovepianos.com/> www.davidlovepianos.com

 

From:  <mailto:caut-bounces at ptg.org> caut-bounces at ptg.org [
<mailto:caut-bounces at ptg.org?> mailto:caut-bounces at ptg.org] On Behalf Of
<mailto:wimblees at aol.com> wimblees at aol.com
Sent: Saturday, August 01, 2009 8:04 PM
To:  <mailto:Pianotech at PTG.org> Pianotech at PTG.org;  <mailto:caut 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
 <http://www.pianotuning.com/> www.pianotuning.com

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