Good idea to check this. Is this best checked underneath the SB with a palatte knife or similar for a solid connection between the two? I know SB crack is in some sense a cosmetic distraction, but does speak about how dried out the board is getting to cause separation. Bob Hull --- Greg Newell <gnewell@ameritech.net> wrote: > May sound like a beginners answer but have you > checked the soundboard's glue joint connection to > the inner rim? > > Greg Newell > > > > At 12:08 AM 3/1/2006, you wrote: > >The catastrophic action failure thread may have > merged > >into a discussion of seasonal loss of crown/db and > >therefore I guess sustain/tonal quality. > > > >Here are observations about two terrible sounding > NY > >D's I am servicing; Plus, a question about finding > the > >culprit. > > > >#1. I went to a recital this evening at one of the > >univ. for which I do piano service. The NY D (mid > >1970's era) was more dreadful than usual, > particularly > >in tonal fullness. There was the initial splatter > of > >sound, quite thin and short, in octaves 5 and 6. > It > >sounds this way I guess at other times of the year > but > >I really noticed it tonight sitting out in the > >audience. When I tune, I zero in so much on the > >tuning that I turn off my voicing perception. > There's > >no money in their budget for improvements at this > >time, unfortunately. > > > >As I sat there, I wanted to investigate, does this > >piano need, voicing or new hammers or a new board? > >Hammers have been replaced (by a previous tech) and > >aren't that worn. The SB has a crack in it that is > >definitely more visible during this time of the > year. > >Yesterday when I tuned somewhere here in the area > it > >was 28% rh at 71 deg. Could be a little different > I > >suppose from location to location. > > > >#2. The second D, which is bothering me greatly is > in > >a church. It's also a 1970's model. I put all new > >hammers and wippens in it replacing teflon parts > and > >problems about 2 years ago. I hoped for great > >improvement in tone. While I got some, the piano > >still lacks power terribly. I am in the process of > >adding keytop/acetone which is giving some help but > >still not what I want. When I pluck a string it's > not > >much or any different than the hammer strike. A > >rocker gauge on the bridge of this piano indicates > >there is downbearing. This one has a Dampp Chaser, > the > >univ. one doesn't. > > > >Do you always check crown/downbearing a particular > >way: under the board with a thread; rocker gauge on > >bridge; thread from agraffe to hitch pin; Lowell > gauge > >or other? I used different methods, but wonder > which > >gives the best reading. > > > >Bob Hull > > > >--- Ron Nossaman <rnossaman@cox.net> wrote: > > > > > > Regarding Steinway, the loose pinning > (currently > > > 20% RH at > > > > this particular venue), coupled with raising > the > > > hammer > > > > line several mm (key-dip; a very skinny .400") > > > brought > > > > about the dread CAF on several notes. (see > Eric's > > > test) > > > > > > Something I've been meaning to ask. New York > > > Steinways, I > > > assume? 20%RH at 70° puts soundboards at 4.5%MC. > > > That's at or > > > below (depending on who you talk to) what they > were > > > originally > > > dried down to for compression crowning with flat > > > ribs. There > > > shouldn't be a lick of crown anywhere in these > > > pianos in these > > > conditions, and they ought to be mostly killer > > > octave and > > > sound thoroughly terrible right now. Do they? > > > > > > Ron N > > > _______________________________________________ > > > caut list info: > > > https://www.moypiano.com/resources/#archives > > > > > > > > > > >__________________________________________________ > >Do You Yahoo!? > >Tired of spam? Yahoo! Mail has the best spam > protection around > >http://mail.yahoo.com > >_______________________________________________ > >caut list info: > https://www.moypiano.com/resources/#archives > > Greg Newell > Greg's piano Forté > mailto:gnewell@ameritech.net > > _______________________________________________ > caut list info: > https://www.moypiano.com/resources/#archives > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
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