---------------------- multipart/alternative attachment Nothing yet. Still trying to find out a couple of things. Hopefully, it'll get done soon though and I'll post what happened. Thanks. Avery >Avery- >So what happened? > >David Skolnik > > > >At 12:44 PM 02/03/2002 -0600, you wrote: > >>List, >> >>Warning. This may be a fairly long post. Here's the background. >> >>Our newer 'D' (1997) went back to the dealership for some work. The >>extremely high humidity after the flood last summer had affected some >>things, mainly the damper system. I had thought about completely >>re-regulating it this summer but because the music desk was so tight it >>almost took Godzilla to get it out, I decided to wait and see if things >>would return to some semblance of normal >>after it started drying out. They mostly did, including the music desk >>problem. It's fine now. >> >>Anyway, the dealer had heard about us having some problems with the >>piano, so he offered to bring it in and have his techs do some work on >>it before the festival at no charge to us. Hey, why not? :-) Freed me >>up to do other things. >> >>I've talked to the shop tech and he told me that he'd had to raise the >>stack some because the hammers weren't hitting correctly. My first >>question is what effect would that have to how the action would then >>have to be regulated? >> >>OK, now the problems. I had to pull the action Saturday to do something >>or other and accidently discovered that a lot of the hammers are now >>resting on the backchecks. Even to the point of being able to hear a >>noise when they hit and there's no bounce at all on many of them. >>Especially from the upper middle, all the way down to the end. Also, if >>you put your hand on the hammer and slowly press the key, you can feel a >>slight rub on many of them in that area. And no, it's not the tail >>that's rubbing. :-) If the hammer should happen to come back too >>hard, it could >>cause it to be caught by the backcheck. That happened on one note with >>Angela Chang (Janina Fialkowska's substitute). I corrected a few by >>changing the angle of the backcheck just a little and got through the >>concert OK. >> >>I checked a few things and found that the dip is well over 10mm on the >>whites, the hammer blow is at least 2", the drop is way too much and >>there is plenty of aftertouch, in not too much in some cases. However >>the basic feel is fairly decent, maybe even on the light side. >>Almost "dangerously light", as Anton put it. >> >>If I raise the hammer line to where I normally like to have it (around >>1 3/4" or so, that's going to seriously increase the aftertouch. Even >>raising it to 1 7/8" would cause a problem and I don't think I can >>decrease the dip enough to compensate for that. There's also not enough >>room to be able to lower the whites any. They're already about as low as >>they can be. >> >>That brings me back to my first question. Would raising the stack have >>made these compromises necessary? Especially the excessive hammer blow? >> >>Any suggestions on what to do to correct the problem(s). I haven't had >>a chance yet to check the backcheck height in relation to letoff. That's >>one possibility but I'm not quite ready to jump in and start >>lowering backchecks just yet, until I know what's really happening >>here. The >>problem was not there before the tech raised the stack. >> >>Got any comments Horace? Anyone else? I'm going to have to get on it >>this week, so any quick help would be greatly appreciated. >> >>Sorry about the length of this. It just takes a bit to explain all this. >>I'm also going to send this to the caut list, so sorry about any >>duplication for some of you. >> >>Regards, >>Avery >> >>P.S. At least they corrected some of the problems with the damper lift, >>even though I don't really like the damping, either. ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/caut.php/attachments/bf/ee/89/47/attachment.htm ---------------------- multipart/alternative attachment--
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