This is a multipart message in MIME format ---------------------- multipart/alternative attachment More than likely the problem is length of bass dampers. The= first thing is checking if your arm against the bass strings= eliminates the overring when playing the tenor. Read Bill= Spurlock's articles in the Journal on making dampers... David I. ----- Original message ----------------------------------------> From: <Tvak@aol.com> To: <pianotech@ptg.org> Received: Tue, 30 Nov 2004 22:33:26 EST Subject: damper problem (probably just stupidity on my part) List I don't think anyone can help me with this, but here goes... I replaced the damper felts on an Acrosonic spinet. My initial= diagnosis and decision to replace the damper felts was based on= the familiar sound of ringing after notes were played. I did= notice that the spoons were lifting most of the dampers very= early, preventing some of the dampers from having good contact= pressure with the string, but I found a few that were OK and= when I checked them, they didn't dampen very well, either, so I= decided that the felt (which was original to this 1940s piano)= needed replacing. It was my hope that the additional height= from the new felt would remedy the spoon lift timing, but if not= I was ready to regulate those suckers, too. When I put the action back in the piano I found that the= dampening is not much better. But why? 1. There is follow through on all the dampers. (In case I'm= not clear, I mean that the damper will move with the string when the string is pressed toward= the soundboard, indicating that there is proper pressure for the damper to dampen the= string.) 2. The spoons are indeed lifting at the proper time, and so= they are not impeding the damper levers from pressing = against the strings. (There is follow through.) 3. The damper pedal is not holding the dampers away from the= strings. (Again, there is follow through.) 4. The dampers are seated well on the strings. It's not a= string level issue. (It's not one of the three strings on a trichord, for instance. It's all of= them equally.) 5. The dampers are aligned to the strings properly. The= bichords dampen both strings equally, the trichords dampen all = three equally. Just not enough, it seems. They do all dampen somewhat. I mean, it's not like the pedal is= down. But there is definitely sound after the keys are returned= to the up position. It sounds just about the same as it did= before I replaced them! (A second question might be, who among= you would charge this woman for your work? I won't, until I can= get it to sound better.) I did file the hammers, which were heavily groovy, man. I didn't= change the hammer blow distance though, due to the spoons= initially being on the early side, I thought it was best to just= leave it as is. I was happy that the spoon lift was OK with the= new damper felts. I hate regulating spoons. I didn't do= anything else to the piano, other than replace a few bridle= straps. I'm going back on Saturday to check it out, and see if perhaps= the felt has started to conform to the contour of the strings= and dampen better, but if they don't, then what? I'll try= dampening all the treble strings that have no dampers with a= towel and see if the ringing goes away, but I don't think it= will. Any ideas? Is there something I've not thought of? Any= diagnostic procedures that might shed light on this? Thanks in advance, Tom Sivak Chicago PTG Associate ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/16/1a/07/49/attachment.htm ---------------------- multipart/alternative attachment--
This PTG archive page provided courtesy of Moy Piano Service, LLC