This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Tom, I had this problem once and it turned out to be reverberation in the = paneled room. Just something to keep in mind. Norm Barrett Memphis Chapter ----- Original Message -----=20 From: Tvak@aol.com=20 To: pianotech@ptg.org=20 Sent: Tuesday, November 30, 2004 9:33 PM 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 =20 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.)=20 3. The damper pedal is not holding the dampers away from the = strings. (Again, there is follow=20 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. =20 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,=20 Tom Sivak Chicago PTG Associate ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/be/01/34/83/attachment.htm ---------------------- multipart/alternative attachment--
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