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<DIV><FONT size=2 face=Arial>Exactly my thoughts. The place where it HAD been
stored for 40+ years was really an oven in the summer shrinking the wood and age
locked the bolts to the plate preventing them from turning as easily as one
might expect.</FONT></DIV>
<DIV>Joe Goss BSMusEd MMusEd RPT<BR><A
href="mailto:imatunr@srvinet.com">imatunr@srvinet.com</A><BR><A
href="http://www.mothergoosetools.com">www.mothergoosetools.com</A></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=alliedpianocraft@hotmail.com
href="mailto:alliedpianocraft@hotmail.com">Al Guecia/Allied PianoCraft</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> Sunday, July 03, 2011 6:33 AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [pianotech] SnS rim
screws</DIV>
<DIV><BR></DIV>Joe, it could then be possible that the plate was up off the
supports and when you tighten the plate bolts you got the plate down onto the
supports and thus the improved tone and down bearing.
<DIV><BR>
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<DIV>Al -</DIV>
<DIV>High Point, NC</DIV>
<DIV><BR></DIV></SPAN><BR class=Apple-interchange-newline></DIV><BR>
<DIV>
<DIV>On Jul 2, 2011, at 10:36 PM, Joe Goss wrote:</DIV><BR
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<DIV><FONT size=2 face=Arial>Sorry for the confusion. We Tightened only the
plate bolts.</FONT></DIV>
<DIV><FONT size=2 face=Arial>None of the nose.</FONT></DIV>
<DIV><FONT size=2 face=Arial>My question about the nose bolts stems from
earlier discussions on how the board flexes while the tension is let
down</FONT></DIV>
<DIV><FONT size=2 face=Arial>Thanks for the responses.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV>Joe Goss BSMusEd MMusEd RPT<BR><A
href="mailto:imatunr@srvinet.com">imatunr@srvinet.com</A><BR><A
href="http://www.mothergoosetools.com">www.mothergoosetools.com</A></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message -----</DIV>
<DIV
style="BACKGROUND-COLOR: rgb(228,228,228); FONT: 10pt arial; background-origin: initial; background-clip: initial"><B>From:</B><SPAN
class=Apple-converted-space> </SPAN><A title=a440a@aol.com
href="mailto:a440a@aol.com">Ed Foote</A></DIV>
<DIV style="FONT: 10pt arial"><B>To:</B><SPAN
class=Apple-converted-space> </SPAN><A title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">pianotech@ptg.org</A></DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B><SPAN
class=Apple-converted-space> </SPAN>Saturday, July 02, 2011 7:01
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B><SPAN
class=Apple-converted-space> </SPAN>Re: [pianotech] SnS rim
screws</DIV>
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<DIV><FONT size=2 face=Arial><FONT size=2 face=Arial>
<DIV>Joe writes: <BR>>>I remember tightening the plate bolts (
or trying ) with a</DIV>
<DIV>small 6 inch crescent wrench. All bolts would not budge, so I
thought every thing was fine.</DIV>
<DIV> Cut to the chase:</DIV>
<DIV>We tightened the bolts with a socket. Crown is back in the mid
section where it was flat.</DIV>
<DIV>Sustain 8 seconds!</DIV>
<DIV> Quick questions</DIV>
<DIV>The bolts are a 3/4" head and the low bass 1/16" larger</DIV>
<DIV>How tight can I go.</DIV>
<DIV> Can the tenor and treble nose bolts be adjusted up to gain more
crown? They are the style that has a tuning hammer shape. The bass has a
cover cap</DIV>
<DIV><BR></DIV>
<DIV>Greetings, </DIV>
<DIV> First, you mention plate bolts, then seem to refer
to the nose bolts, while including "all" bolts. The rim bolts should
not change the crown, so I am assuming you are lowering the nose bolts.
I am sure you are aware that you are just bending the plate
downward. How tight can you go? Until you hear a crack and have
broken the plate. Without having installed the plate, and knowing
what the preloaded flex is on the plate, I would be very leery of pulling
it down with the nose bolts/caps. The bass, with a cover cap, will
not get you much gain in terms of bearing, and I would advise against
changing it. </DIV>
<DIV> There are things I have done to analyze a plate
under tension, like putting a dial indicator on the plate, and begin
carefully undoing the large nut on a nearby nose bolt. If nothing
changes, the plate is either neutral or being held up by the bolt.
Loosen the other nut and see if it stays the same. You may
find that the plate is stressed upwards, held up by the shoulders on the
nose bolts. I would be more serene lowering a plate such as that, than
wanting to lower one that rises as soon as the nuts are loosened.
</DIV>
<DIV> There is an amazing amount of flex that can be had on
most plates, but not knowing where the starting point is is like running
in the dark. </DIV>
<DIV>Regards, </DIV>
<DIV><BR></DIV>
<DIV>Ed Foote </DIV></FONT>
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