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<DIV>In a message dated 1/31/2004 4:35:49 PM Pacific Standard Time, tlesher@=
sachnoff.com writes:</DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue =
2px solid"><FONT face=Arial>As for the holes, although there's no substitu=
te for somebody taking frequency spectrum measurements from a variety of pos=
itions and then plugging the holes up and doing it again, I think I can hand=
le that question a little more satisfactorily than the other one. I wi=
sh I still had the equipment to take some measurements myself, but various u=
pheavals took their toll some years ago. But give me some data if you =
want and I'll see what I come up with. <BR><BR>Best r egards,<BR><BR>Trent L=
esher<BR><BR>(tuning student, amateur pianist)</FONT></BLOCKQUOTE></DIV>
<DIV><FONT face="Times New Roman" color=#000040> =
<FONT size=4> Trent</FONT></FONT></DIV>
<DIV><FONT face="Times New Roman" color=#000040><FONT size=4> &nb=
sp; Interesting post. This may be trivia but it is interesting t=
o note than many times when I'm working on an unstrung piano & booming t=
he board with the fist to hear its innate resonace & I</FONT>=
<FONT size=4>f your face or hand is near any of the nose bolt holes just h=
ow powerful a blast of air comes thru there! It would seem that a great deal=
of air is continually leaking thru these holes. Might this be a friction lo=
ss as you describe? WOuld the effeincy of the whole mechanism indeed increas=
e if the hole were sealed or eliminated or are they benificial? I think I'll=
get someone to play vigorously on My Stwy D and then I'll see if I can feel=
any significant exchange from underneath the piano around the bolt holes.</=
FONT></FONT></DIV>
<DIV><FONT face="Times New Roman" color=#000040 size=4> Dale Erw=
in</FONT></DIV></BODY></HTML>