<!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 5.50.4522.1800" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV>I would like to hear more on this also David. My guess is that = static DW & UW would not be affected much, but I should think there would be = some significant potential to affect inertia with different weight = hammers.</DIV> <DIV> </DIV> <DIV>Terry Farrell <SPAN = id=__#Ath#SignaturePos__></SPAN> </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=davidlovepianos@earthlink.net href="mailto:davidlovepianos@earthlink.net">David Love</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> Friday, October 12, 2001 = 4:10 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: </DIV> <DIV><BR></DIV> <DIV><FONT size=2>I wasn't so much thinking about 14lb vs 16 = lb.  I realize the difference hammer to hammer is minimal.  I was more = thinking about moulding, size, etc..  I assume the hammer weight is less significant than a grand because of the hammer's relative position to = the lever and the fact that it travels horizontally rather than = vertically.  In a grand the relationship is generally 5 or 6:1.  I was = wondering if there is such a general ratio for an upright or if it is even significant.  As I suspected, it seems relatively insignificant.</FONT></DIV> <DIV><FONT size=2></FONT> </DIV> <DIV><FONT size=2>David Love</FONT></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=Wimblees@AOL.COM href="mailto:Wimblees@AOL.COM">Wimblees@AOL.COM</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> October 12, 2001 12:36 = PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: </DIV> <DIV><BR></DIV><FONT face=arial,helvetica><FONT size=2>In a = message dated 10/12/01 1:19:36 PM Central Daylight Time, <A = href="mailto:davidlovepianos@earthlink.net">davidlovepianos@earthlink.n= et</A> writes: <BR><BR><BR> <BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff = 2px solid; MARGIN-RIGHT: 0px" TYPE="CITE">Generally, how does a change in the weight of an = upright hammer effect the touchweight.</FONT><FONT lang=0 face=Arial = color=#000000 size=3 FAMILY="SANSSERIF"> <BR><BR></FONT><FONT lang=0 = face=Arial color=#000000 size=2 FAMILY="SANSSERIF">David = Love</FONT><FONT lang=0 face=Arial color=#000000 size=3 FAMILY="SANSSERIF"> = <BR><XMP></XMP></FONT><FONT lang=0 face=Arial color=#000000 = size=2 FAMILY="SANSSERIF"></BLOCKQUOTE><BR><BR>Because the hammer is at = the end of a stick that has to be moved by levers, etc., there will be an = effect on touchweight. However, the difference in the weight of the felt on a = hammer is not going to make that much difference. I don't think you will be = able to measure the touchweight difference between a set of 14lb hammers and = 16 lb hammers. <BR><BR>In case you didn't know, when you buy a set of 14 = lb hammers, that is the weight of an entire sheet of felt, out of which = 6 or 8 sets of hammers is cut. A set of 16 lb hammer comes from a sheet = that weighs 16 lb. So by the time you get down to one hammer, the actual weight = of a hammer is going to be virtually insignificant. If you want to reduce = the touchweight of a hammer, removing the wood on the hammer, or the = shank, will make more of a difference than replacing a 16 lb hammer with a 14 lb = hammer. <BR><BR>I hope I explained it right. <BR><BR>Wim </FONT></FONT></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>