FWIW: Had that problem with a damper once and couldn't solve it, so I exchanged the damper with the one next to it that was working. I Still had the same problem. I knew then that it must be a stiff underlever flange. It was. Since my repinning tools were in my car and the musicians were waiting, I exchanged the underlever with the top treble one and 'Voila', Problem solved! Phil Ryan Miami Beach David Ilvedson wrote: > 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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