<!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 6.00.2900.3354" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY>
<DIV><FONT face=Arial size=2><STRONG><EM>I've experienced the tonal improvement
but I've also noticed an occasional increase in the volume of keyslap
on the backrails and sometimes extra knocking in the treble hammers. To my
knowledge, the backrail was well secured by the dags and it's definitely
not keyframe knocking. </EM></STRONG></FONT></DIV>
<DIV><FONT face=Arial size=2><STRONG><EM></EM></STRONG></FONT> </DIV>
<DIV><FONT face=Arial size=2><STRONG><EM>Jude Reveley, RPT<BR>Absolute Piano
Restoration, LLC<BR>Lowell, Massachusetts<BR>(978)
323-4545</EM></STRONG></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>----- Original Message ----- </FONT>
<DIV><FONT face=Arial size=2>From: "andre oorebeek" <</FONT><A
href="mailto:oorebeek@planet.nl"><FONT face=Arial
size=2>oorebeek@planet.nl</FONT></A><FONT face=Arial size=2>></FONT></DIV>
<DIV><FONT face=Arial size=2>To: "Pianotech List" <</FONT><A
href="mailto:pianotech@ptg.org"><FONT face=Arial
size=2>pianotech@ptg.org</FONT></A><FONT face=Arial size=2>></FONT></DIV>
<DIV><FONT face=Arial size=2>Sent: Monday, July 07, 2008 5:41 PM</FONT></DIV>
<DIV><FONT face=Arial size=2>Subject: Re: Keyframe Bedding</FONT></DIV></DIV>
<DIV><FONT face=Arial><BR><FONT size=2></FONT></FONT></DIV><FONT face=Arial
size=2>> And, turning the bolts tighter also increases the tension in the
tone.<BR>> The bolts are in a way like tuning forks.<BR>> If you press
down a tuning fork hard on a wooden surface, the tone it <BR>>
generates will intensify.<BR>> That way it is possible to 'voice' by
adjusting the bolts.<BR>> <BR>> friendly greetings<BR>> from<BR>>
André Oorebeek<BR>> <BR>> Antoni van Leeuwenhoekweg 15<BR>> 1401 VW
Bussum<BR>> the Netherlands<BR>> <BR>> tel : 0031 - 35
6975840<BR>> gsm : 0031 - 652388008<BR>> <BR>> </FONT><A
href="mailto:concertpianoservice@planet.nl"><FONT face=Arial
size=2>concertpianoservice@planet.nl</FONT></A><BR><FONT face=Arial size=2>>
</FONT><A href="http://www.concertpianoservice.nl"><FONT face=Arial
size=2>www.concertpianoservice.nl</FONT></A><BR><FONT face=Arial size=2>>
<BR>> "where music is,<BR>> no harm can be"<BR>> <BR>> <BR>> On
Jul 7, 2008, at 11:35 PM, </FONT><A href="mailto:erwinspiano@aol.com"><FONT
face=Arial size=2>erwinspiano@aol.com</FONT></A><FONT face=Arial size=2>
wrote:<BR>> <BR>>><BR>>><BR>>><BR>>> -----Original
Message-----<BR>>> From: </FONT><A href="mailto:erwinspiano@aol.com"><FONT
face=Arial size=2>erwinspiano@aol.com</FONT></A><BR><FONT face=Arial
size=2>>> To: </FONT><A href="mailto:ilvey@sbcglobal.net"><FONT face=Arial
size=2>ilvey@sbcglobal.net</FONT></A><BR><FONT face=Arial size=2>>> Sent:
Mon, 7 Jul 2008 2:33 pm<BR>>> Subject: Re: Keyframe
Bedding<BR>>><BR>>> The key frames in modern grands all have a
somewhat arched/pinched <BR>>> key frame arrangement front to
back & end to end. Adjusting the <BR>>> bedding bolts to a
neutral position to start with & then turning the <BR>>> bolts
tighter against the key bed is where the stressing comes <BR>>>
from. You can measure the subsequent rise at the front of the keys
<BR>>> as the bolts are being turned as per Jon Pages
suggestion. The <BR>>> back of the frame is held down by the
dags & the ends by the key <BR>>> blocks<BR>>>
Actually this is also a bit of a buffer or safety factor for <BR>>>
climate changes. This way the bolts will hopefully stay in contact
<BR>>> with the bed in each season & not be so prone to change
with <BR>>> humidity & temp.<BR>>>
Dale<BR>>><BR>> <BR>> <BR>> <BR>> <BR>> <BR>> <BR>>
<BR>> <BR>></FONT></BODY></HTML>