<html xmlns:v="urn:schemas-microsoft-com:vml" = xmlns:o="urn:schemas-microsoft-com:office:office" = xmlns:w="urn:schemas-microsoft-com:office:word" = xmlns:st1="urn:schemas-microsoft-com:office:smarttags" = xmlns="http://www.w3.org/TR/REC-html40"> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; = charset=us-ascii"> <meta name=ProgId content=Word.Document> <meta name=Generator content="Microsoft Word 10"> <meta name=Originator content="Microsoft Word 10"> <link rel=File-List href="cid:filelist.xml@01C528CC.07A65D70"> <o:SmartTagType = namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="PersonName"/>  <style>  </style>  </head> <body lang=EN-US link=blue vlink=purple = style='tab-interval:.5in'> <div class=Section1> Those pianos are just very = sensitive to changes in humidity.  = I’m not sure why but I think it has to do with the type of rim construction. =  I vote for a full system (and = more frequent tunings, of course).<o:p></o:p> <o:p> </o:p> <div> <st1:PersonName>David = Love</st1:PersonName> davidlovepianos@comcast.net <o:p></o:p> </div> -----Original = Message----- From: = caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] On = Behalf Of Clarence Zeches Sent: Monday, March 14, = 2005 6:43 PM To: caut@ptg.org Subject: [CAUT] Tuning = stability <o:p> </o:p> I service a Bosendorfer = 6’4 that was rebuilt a couple of years ago.  I serviced this piano when it was new in the 70’s and the = theater which it is in has always had problems with humidity.  Then they had a = “toner” who serviced? it for several years because he was very cheap in cost.  When I got a call about 3 years = ago to come and look at the piano I counted over 80 tunings in 12 years = recorded on the plate with felt tip pen.  = Some of the pins were so loose that they just went back to where they came = from as soon as you took you hand off the tuning hammer.  This brought about the = rebuilding by a very reputable Bosendorfer dealer.<o:p></o:p> <o:p> </o:p></fo= nt> Since rebuilding, the piano = has not been any more stable than it was before being rebuilt, but the tuning = pins are tight.  It does have a = 48” Dampp Chaser and a 24” Dampp chaser with a humidistat = installed.  I tuned the piano in September = and had to do a pitch raise.  I = tuned it in early December and it was flat again.  I tuned it today (March 14th) and had to do another = pitch raise.  It was over 25 = cents flat. The bass section was only about 5 cents flat while some notes in the = treble were as much as 40 cents flat.   Before I tuned it today I gently nudged the strings behind the = dampers and behind the bridge, I tightened all plate screws and some would turn, = then did the pitch raise and tuned it.  = I will have to wait to see if what I did today helps the stability = any.<o:p></o:p> <o:p> </o:p></fo= nt> My question is what else = can I do to stabilize this piano?  Do I = insist on a full humidity control system?  They have previously rejected this idea.  It would be sadly neglected = during the summer and holidays as it is a private school theater. They have a = dehumidifier running all the time in the room (not near the piano) and the humidity = today in the piano was 42% and the temperature was 72.  The piano is not used a = lot.  Some weeks it would not get 3 = hours of use, near program times it will get used 2-3 hours a day.  To my knowledge they keep a = fairly consistent temperature in the room.  It has never been cold when I go in the room to tune in the = winter.  The opposite end of this = building has both the gym and a swimming pool, about 200 feet away.  The music area is about 50 feet = away and the pianos in the music room are more = stable.<o:p></o:p> <o:p> </o:p></fo= nt> Clarence Zeches = <o:p></o:p> </div> </body> </html>