<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; = charset=windows-1252"> <META content="MSHTML 6.00.2800.1126" name=GENERATOR> <STYLE>@page Section1 {size: 8.5in 11.0in; margin: 1.0in 1.25in 1.0in = 1.25in; } P.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman" } LI.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman" } DIV.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0in 0in 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 } 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 color=#0000ff size=2><SPAN = class=049434811-08032003>And having that smooth key stroke beginning help even light players to take = some power for the remaining of the stroke, while if the resistance is = immediate, their fingers are too much slow down and they don't go thru the whole stroke.</SPAN></FONT></DIV> <DIV><FONT face=Arial color=#0000ff size=2><SPAN class=049434811-08032003></SPAN></FONT> </DIV> <DIV><FONT face=Arial color=#0000ff size=2><SPAN class=049434811-08032003></SPAN></FONT> </DIV> <DIV><FONT face=Arial color=#0000ff size=2><SPAN = class=049434811-08032003>Cheers and a good Week end</SPAN></FONT></DIV> <DIV><FONT size=2></FONT> </DIV> <DIV><FONT size=2>Isaac OLEG<BR><BR>Entretien et réparation de pianos.<BR><BR>PianoTech<BR>17 rue de Choisy<BR>94400 VITRY sur SEINE<BR>FRANCE<BR>tel : 033 01 47 18 06 98<BR>fax : 033 01 47 18 06 = 90<BR>cell: 06 60 42 58 77 </FONT></DIV> <BLOCKQUOTE dir=ltr style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px = solid; MARGIN-RIGHT: 0px"> <DIV class=OutlookMessageHeader dir=ltr align=left><FONT = face=Tahoma size=2>-----Message d'origine-----<BR><B>De :</B> pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]<B>De la = part de</B> Dave Nereson<BR><B>Envoyé :</B> samedi 8 mars 2003 12:26<BR><B>À :</B> pianotech@ptg.org<BR><B>Objet :</B> = Re: Yamaha U1 regulation problem<BR><BR></FONT></DIV> <DIV><FONT size=2></FONT> </DIV> <BLOCKQUOTE dir=ltr style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; = BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: = black"><B>From:</B> <A title=tomtuner@attbi.com href="mailto:tomtuner@attbi.com">Tom = Driscoll</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, March 06, = 2003 10:06 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Yamaha U1 regulation = problem</DIV> <DIV><BR></DIV> <DIV class=Section1> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">List</SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: = Arial">           = I recently serviced a U1 vertical for a first time client. Excellent = piano very little wear and -tuned up quite well. </SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: = Arial">           = I did however find lettoff to be over !/4 “and inconsistent. </SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: = Arial">           = I adjusted to 1/8” –and took up lost motion. Tightened action = screws. The key dip and after touch were sufficient, and the jacks are free to = travel away from the butts---no interference from that adjustable = rail—(sorry, I forget Y’s nomenclature on that component)</SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: = Arial">           = My client has a light touch and the action still = stutters</SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I returned, shortened = blow distance readjusted lost motion, and adjusted spoons to re-correct = damper timing.</SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: = Arial">           = My client called again with the same problem and called other = technicians for advice also  </SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: = Arial">           = I know bobbling hammers can be a problem on Yamaha verticals and = I’ve worked on hundreds of these, but I can’t shorten blow any more and as I = mentioned, keydip-aftertouch are correct. I’m hesitant to increase lettoff = back to its original excessive amount, so esteemed colleagues ---Any = suggestions? I’m going back next week. </SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: = Arial">           = P.S.  Backchecks are also adjusted---I.E. catchers are not = bouncing out or off of the backchecks</SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: = Arial">           = Tom Driscoll</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 = also encountered bobbling hammers on many Yamaha verticals during my = eight years with a Yamaha dealer.   One of the most common responses = from Buena Park when I asked for technical help was to tell the customers = to press the keys all the way to the bottom with no hesitation mid-stroke.  [Almost any vertical can be made to bobble by = hesitating mid-stroke].  Your client's light touch might at times be = "hesitating" enough on certain blows to cause bobbling.  But I realize = telling people they're playing "wrong" is a delicate situation.  The = only other thing the tech. folks at Yamaha would suggest was to check the = pinning and the spring strength.  I think too tight a center pin can = contribute to bobbling as well as too weak a hammer return spring (the Schwander = type springs are considerably lighter than the traditional long ones = mounted on a separate spring rail).  [A side note not really having to do = with this problem:  The let-off on the pianos with the Silent Piano = feature is 1/4" or wider, I believe, and supposedly the touch doesn't = suffer.  Haven't played one enough to know, though.]</SPAN></FONT></P> <P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">        --Dave Nereson, RPT, Denver</SPAN></FONT></P></DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>