<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content="text/html; charset=iso-8859-1" = http-equiv=Content-Type> <META content="MSHTML 5.00.2614.3500" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV> </DIV> <DIV style="FONT: 10pt arial">----- Original Message ----- <DIV style="BACKGROUND: #e4e4e4; font-color: black"><B>From:</B> <A href="mailto:moffattr@cadvision.com" = title=moffattr@cadvision.com>Robert Moffatt</A> </DIV> <DIV><B>To:</B> <A href="mailto:avery@ev1.net" = title=avery@ev1.net>Avery Todd</A> </DIV> <DIV><B>Sent:</B> Wednesday, September 20, 2000 12:25 AM</DIV> <DIV><B>Subject:</B> Re: Fw: Yamaha problem</DIV></DIV> <DIV><BR></DIV> <DIV><FONT color=#0000ff face=Arial size=2>Avery,</FONT></DIV> <DIV> </DIV> <DIV><FONT color=#0000ff face=Arial size=2><FONT = color=#000000>Yes that's the one. </FONT>I have done many of these repairs. Once again..take a <U>close </U></FONT></DIV> <DIV><FONT color=#0000ff face=Arial size=2>look at the rail. With = the symptoms you describe, the problem is a bent rail. Almost</FONT></DIV> <DIV><FONT color=#0000ff face=Arial size=2>always. The rail = doesn't look bent...but it is. First... purposely, because of the action = screw,</FONT></DIV> <DIV><FONT color=#0000ff face=Arial size=2>but very..very slight = deviations in the rail will cause the uneven damper lift. Take the = action</FONT></DIV> <DIV><FONT color=#0000ff face=Arial size=2>and give it a good = bend. This will certainly show you where the problem stems from.</FONT></DIV> <DIV><FONT color=#0000ff face=Arial size=2>If you had to rebend = all of the damper wires....(I don't think anything would cause them <U>all</U> to move</FONT></DIV> <DIV><FONT color=#0000ff face=Arial size=2>haphadsordly, due to a = bent "hanger"). Bending the damper wires will correct the visual problem...</FONT></DIV> <DIV><FONT color=#0000ff face=Arial size=2>but won't address the = real problem. If it were a bent hanger, replacing, or correcting the bent</FONT></DIV> <DIV><FONT color=#0000ff face=Arial size=2>hanger should address = the problem. If not.....then back to the rail.</FONT></DIV> <DIV><FONT color=#0000ff face=Arial size=2></FONT> </DIV> <DIV><FONT color=#0000ff face=Arial size=2>Warm = regards,</FONT></DIV> <DIV><FONT color=#0000ff face=Arial size=2></FONT> </DIV> <DIV><FONT color=#0000ff face=Arial size=2>Bob</FONT></DIV> <DIV> </DIV> <DIV> </DIV> <DIV><FONT face=Arial size=2>----- Original Message ----- </FONT> <DIV><FONT face=Arial size=2>From: Avery Todd <<A href="mailto:avery@ev1.net">avery@ev1.net</A>></FONT></DIV> <DIV><FONT face=Arial size=2>To: Robert Moffatt <<A href="mailto:moffattr@cadvision.com">moffattr@cadvision.com</A>></FO= NT></DIV> <DIV><FONT face=Arial size=2>Cc: <<A href="mailto:atodd@uh.edu">atodd@uh.edu</A>></FONT></DIV> <DIV><FONT face=Arial size=2>Sent: Tuesday, September 19, 2000 6:54 PM</FONT></DIV> <DIV><FONT face=Arial size=2>Subject: Re: Fw: Yamaha = problem</FONT></DIV></DIV> <DIV><BR></DIV><FONT face=Arial size=2>> Hi Robert,<BR>> = <BR>>     Well, I guess I finally figured out how to get your = messages. They<BR>> still keep coming up blank on my school computer but today, = I<BR>> forwarded a blank one to my home computer and I "think" this is<BR>> it. Right? This one came through fine at home.<BR>>     Thanks for the post(s). I still don't know what the = root problem<BR>> was/is but I went ahead and did a damper wire bending = job (I was<BR>> very frustrated) and "so far", everything seems to be = fine.<BR>>     I tend to think that something Newton posted is = probably the real<BR>> problem, a bent hanger. But since everything is working = fine now,<BR>> and I can always go back and correct any problems, I think = I'll just<BR>> leave everything alone for now. (One of the advantages of = the type of<BR>> job I have.) :-)<BR>>     Thanks again for = your effort in posting me in spite of the problems.<BR>> I still don't = know what's causing them.<BR>> <BR>> Regards,<BR>> Avery<BR>> <BR>> = At 10:27 PM 09/17/00 -0600, you wrote:<BR>> ><BR>> >----- Original = Message -----<BR>> >From: <<A href="mailto:moffattr@cadvision.com">mailto:moffattr@cadvision.com</A>&= gt;Robert Moffatt<BR>> >To: <<A href="mailto:caut@ptg.org">mailto:caut@ptg.org</A>><A href="mailto:caut@ptg.org">caut@ptg.org</A> ; <<A href="mailto:atodd@UH.EDU">mailto:atodd@UH.EDU</A>>Avery = Todd<BR>> >Sent: Saturday, September 16, 2000 2:11 PM<BR>> >Subject: Re: = Yamaha problem<BR>> ><BR>> >Avery,<BR>> ><BR>> >Not a = bother at all.<BR>> >It has been mentioned that metal fatigue in the bushing = clips could be the <BR>> >problem.<BR>> >Highly unlikely, but not = to be ruled out. Rebushing the lift rail guide <BR>> >bushings will eliminate<BR>> >any squeaks, groans etc. At the same time , = polishing the lift rod will <BR>> >certainly help in this<BR>> >area as = well, but has nothing to do with uneven damper lift. It has also <BR>> >been = mentioned<BR>> >that movement in the action rail due to a = "flattened rubber foot" ( it's <BR>> >called an upright<BR>> >action = cap ) could correct the problem...no. The action cap serves only to <BR>> >straighten the<BR>> >intentional bend in the rail when the = action is securely in place. If <BR>> >there is as much uneven<BR>> = >lift as you indicate, the action rail has been bent. Straightening the <BR>> = >rail should be the remedy.<BR>> >Replacing the rail a sure cure. There = are, as in all piano work, a lot of <BR>> >grey areas surrounding<BR>> = >this particular problem. With this fix I'm assuming the piano has not been = <BR>> >tampered with. Probably<BR>> >dropped or fallen over.... the = usual cause in my experience.<BR>> >If you discover any other peculiarities...don't hesitate to write.<BR>> ><BR>> >Best wishes,<BR>> ><BR>> >Bob Moffatt<BR>> >Yamaha Authorised<BR>> >Factory Trained Technician<BR>> ><BR>> = >----- Original Message -----<BR>> >From: Avery Todd <<<A href="mailto:atodd@UH.EDU">mailto:atodd@UH.EDU</A>><A href="mailto:atodd@UH.EDU">atodd@UH.EDU</A>><BR>> >To: Robert = Moffatt <<<A href="mailto:moffattr@cadvision.com">mailto:moffattr@cadvision.com</A>&= gt;<A href="mailto:moffattr@cadvision.com">moffattr@cadvision.com</A>><BR>= > >Sent: Saturday, September 16, 2000 7:47 AM<BR>> >Subject: Re: = Yamaha problem<BR>> ><BR>> > > Robert,<BR>> > ><BR>> = > >    Would you mind resending your message, if possible?<BR>> > > For some reason, it came through blank. I = have that happen<BR>> > > here at school sometimes but still don't know = why. Sorry<BR>> > > for the bother.<BR>> <BR>> = </FONT></BODY></HTML>