<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=iso-8859-1"> <META content="MSHTML 6.00.6001.18023" name=GENERATOR> <STYLE>@font-face { font-family: SimSun; } @font-face { font-family: @SimSun; } @page Section1 {size: 612.0pt 792.0pt; margin: 72.0pt 90.0pt 72.0pt 90.0pt; } P.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Times New Roman" } LI.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Times New Roman" } DIV.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Times New Roman" } A:link { COLOR: blue; TEXT-DECORATION: underline } SPAN.MsoHyperlink { COLOR: blue; TEXT-DECORATION: underline } A:visited { COLOR: purple; TEXT-DECORATION: underline } SPAN.MsoHyperlinkFollowed { COLOR: purple; TEXT-DECORATION: underline } P.MsoAutoSig { FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Times New Roman" } LI.MsoAutoSig { FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Times New Roman" } DIV.MsoAutoSig { FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Times New Roman" } SPAN.EmailStyle17 { COLOR: windowtext; FONT-FAMILY: Arial } DIV.Section1 { page: Section1 } </STYLE> </HEAD> <BODY lang=EN-US vLink=purple link=blue bgColor=#ffffff> <DIV><FONT face=Arial size=2>Jessica,</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Has someone been dusting/cleaning--even spraying something on the damper heads-- and wiping in the wrong direction? </FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>I had to do a lot of damper work on a piano that resided in a house with heavy pipe smoke.  I suppose Presbyterians don't use incense.  :-)</FONT> </DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>How about ironing some Teflon powder into the bushings (and cleaning everything else).</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Hmm.  It doesn't seem like the floor would make a difference on a grand.   We lived in an apartment where the floor dipped and the sewing machine cabinet would roll to the middle of the room.  :-)</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Are the compression ridges something new?  How old is the piano?</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Sorry, I can't remember the Yamaha damper/damper tray set-up at the moment.  Can you shim to get the lift even?</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Barbara Richmond, RPT</FONT></DIV> <DIV><FONT face=Arial size=2>near Peoria, Illinois</FONT></DIV> <DIV> </DIV> <DIV> </DIV> <DIV>----- Original Message ----- </DIV> <BLOCKQUOTE dir=ltr style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=ebonyandivory@on.aibn.com href="mailto:ebonyandivory@on.aibn.com">Jessica Masse</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, May 22, 2008 3:31 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> RE: Pianos on curved church floors </DIV> <DIV><BR></DIV> <DIV class=Section1> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I have been taking care of a C7 Yamaha in an old Presbyterian Church with curved floor.  It has a complete climate control system properly functioning.  I have had much trouble with climate stability in this room but now that the two churches sharing the piano have made sure the piano’s floor length cover gets replaced in between uses the changes seem less dramatic.</SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">However there seemed to be damper problems in the spring summer months.  The damper tray goes from lifting all at once to being to fast in the middle.  Today I went to tighten tray screws and found them all so-so.  So I tightened them all and the sustenuto rail screws. In doing so with the tray screws I tried to force the tray level.  The dampers at both ends still lift too soon.  But also a few dampers in the middle seem not to seat properly.  </SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Remember this piano is on a curved floor and from Bass end to Treble end I figure it tilts 1-9/16”.  I used silk thread tied to gram weights as a plum bob measured down the rim was (5-16<SUP>th</SUP> for 12-3/4”) Piano leans to the Bass end.   Two things visually can be seen the trichord felt is sliced a bit off centre, the other is that the flat felt has drifted to the bass end and is almost missing the right string.  Testing the strings by plucking the bass side was bleeding through.  I’m figuring I am seeing excessive depression and poor centering of the dampers in the tenor C#-4 and D#-4 both trichord felts on the back of damper head wouldn’t fall down completely between the strings only on soft blows but dampen okay on a harder blow they seem to work okay with the pedal (no hanging up).</SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I replaced the trichord felt only on D#-4 (the most offensive one) and rebent the wire to pull the flat felt back to centre position (bent at the top two bends closest to the head) so that the flat felt would cover the right string.  I made sure that the wire was free enough through the guide rail and I leveled the strings.  It dampens better now. </SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">On the C#-4 I just made sure the wire was free and the timing was okay.  I didn’t even notice when I started today that this one was a problem.  I didn’t get this one working as well as it should be. </SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">What I will have to do is replace all the trichord felt and centered and space the wires for the notes with combined trichord and flat felt.   The remaining 3 notes in the top of the tenor are flat felt on both front and back of the heads.  These are not working properly either.  The right strings are almost cleared.</SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">The damper wires are nickel plated and they show a black line (can be easily wiped off) where they contact the guide bushing.  The bushing cloth is very heavy.</SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">There are two things that seem wrong here.  There are very noticeable compression ridges in the sounding board and I wonder if the belly rail is affected too causing the damper guide rail to rise and the dampers to go uneven in the middle and also for them not to rise and fall less far because the strings might move up too.  (if this were true wouldn’t the dampers track to the right string but maybe because the guide rail moves to the right the angle change forces the damper to the left.  I know that these things are all corrected by winter and I can’t be by the piano’s side to make sure it keeps getting covered up.  (The easiest thing to do in all these cases is to ream the guide rail hole more.  But I hate too much movement in the dampers all that extra noise and it won’t fix the pacing problem.</SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I am wondering has anyone else had gravitational/friction problems with grands on curved floors?  Could this effect the wear on keys and dampers and action centre pins?  Doesn’t it make sense to level out a piano than run these risks?  </SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">To be honest they had built a leveling stage that rolled around (Chrysler engineer is a parishioner).  Then, they removed the piano from the stage.  I think the piano functioned better on the stage.  I am recommending that they level out the piano before I go through all the work on the dampers.</SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P class=MsoAutoSig><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">Jessica Masse</SPAN></FONT></P> <P class=MsoAutoSig><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">RPT Piano Technicians Guild</SPAN></FONT></P> <P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P></DIV></BLOCKQUOTE></BODY></HTML>