<!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 6.00.2800.1555" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>Hi Scott,</FONT></DIV> <DIV><FONT face=Arial size=2>I can't prove it, but I think the fast twitter is not related to loose bridge pins.</FONT></DIV> <DIV>Joe Goss RPT<BR>Mother Goose Tools<BR><A href="mailto:imatunr@srvinet.com">imatunr@srvinet.com</A><BR><A href="http://www.mothergoosetools.com">www.mothergoosetools.com</A></DIV> <BLOCKQUOTE 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=pianotuner9932@sbcglobal.net href="mailto:pianotuner9932@sbcglobal.net">Scott Nelson</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=pianotech@ptg.org href="mailto:pianotech@ptg.org">Pianotech List</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, May 12, 2008 8:50 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Estonia 6'3" Grand</DIV> <DIV><BR></DIV> <DIV>Hi Don,</DIV> <DIV> </DIV> <DIV>I have had the same issues on a number of Estonias recently-  On one, I actually removed the strings in the top section, pulled the bridge pins, renotched the bridge, inserted new pins (with epoxy) and restrung the section. It was a bear notching with the plate in the piano, but it can be done. </DIV> <DIV> </DIV> <DIV>Unfortunately there was not a great deal of improvement-still very false. I did not think to mass load the bridge to lower the driven resonant frequency. Perhaps that would have made a difference. The original pins coming out of the bridge were very tight. The beating was at times very fast, especially up near D7 and higher. </DIV> <DIV> </DIV> <DIV>The front duplex is movable on the more recent ones but if you shorten them it tends to reduce the angle from the capo to the aliquot (because that part of the plate angles downward). Nevertheless, de-tuning them does take a lot of noise out of that area. I have had one customer that pointed out an "unfocussed" sound on every note where the front duplex was longest.</DIV> <DIV> </DIV> <DIV> Any ideas on what else can be done for the false beating? </DIV> <DIV> </DIV> <DIV>Scott Nelson, RPT<BR><BR><B><I>Don <pianotuna@yahoo.com></I></B> wrote:</DIV> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">Hi all,<BR><BR>Back from my trip into the wilds of Saskatchewan to tune an Estonia 6'3"<BR>grand. Nice piano but the top register after the treble break had lots of<BR>"false beats". Turns out it was the front scaling tuning that was close<BR>enough to cause the warbles. I muted it while I tuned and then unmuted it<BR>"for the richness of the sound".<BR><BR>Is the front duplex tuneable on these? Or only the rear one?<BR><BR>Temporary muting of the duplex made tuning a pleasure. I hope this tip<BR>helps someone else out sometime.<BR><BR>Regards,<BR>Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T.<BR>Non calor sed umor est qui nobis incommodat<BR><BR>mailto:pianotuna@yahoo.com http://us.geocities.com/drpt1948/<BR><BR>3004 Grant Rd. REGINA, SK, S4S 5G7<BR>306-539-0716 or 1-888-29t-uner<BR><BR></BLOCKQUOTE><BR></BLOCKQUOTE></BODY></HTML>