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<div>Hi Bill</div>
<div> </div>
<div>I am replying to the problem of strings breaking on the <SPAN class=correction id=""><SPAN class=correction id="">Kawai</SPAN></SPAN> <SPAN class=correction id=""><SPAN class=correction id="">KG2</SPAN></SPAN> e,c,d,<SPAN class=correction id=""><SPAN class=correction id="">ect</SPAN></SPAN>. Changing the strings will not eliminate the problem, but it will slow up at first. what seems to have worked for me is when I <SPAN class=correction id=""><SPAN class=correction id="">restrung</SPAN></SPAN> the piano I went down 1/2 size on the wire and gage them slightly heavy <SPAN class=correction id=""><SPAN class=correction id="">letoff</SPAN></SPAN> and have lost only 4 strings in 10</div>
<div>years This piano is in a heavy used classroom.</div>
<div> </div>
<div>Walter <SPAN class=correction id=""><SPAN class=correction id="">Oventrop</SPAN></SPAN> <SPAN class=correction id=""><SPAN class=correction id="">RPT</SPAN></SPAN> <SPAN class=correction id=""><SPAN class=correction id="">SLPS</SPAN></SPAN> </div>
<div> </div>
<br>
-----Original Message-----<br>
From: caut-request@ptg.org<br>
To: caut@ptg.org<br>
Sent: Fri, 24 Nov 2006 1:00 PM<br>
Subj<SPAN class=correction id=""><SPAN class=correction id="">ect</SPAN></SPAN>: caut Digest, <SPAN class=correction id=""><SPAN class=correction id="">Vol</SPAN></SPAN> 1092, Issue 50<br>
<br>
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<div class=AOLPlainTextBody id=AOLMsgPart_1_1af9a9f1-93f8-4c43-ba6d-8e90087db2ab><PRE><TT>Send caut mailing list submissions to
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<div class=AOLPlainTextBody id=AOLMsgPart_2_1af9a9f1-93f8-4c43-ba6d-8e90087db2ab><PRE><TT>Today's Topics:
1. Re: breaking strings, <SPAN class=correction id=""><SPAN class=correction id="">Kawai</SPAN></SPAN> <SPAN class=correction id=""><SPAN class=correction id="">KG-2A</SPAN></SPAN> (1997) (Jim <SPAN class=correction id=""><SPAN class=correction id="">Busby</SPAN></SPAN>)
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<TD class=FieldLabel noWrap>From:</TD>
<TD class=FieldValue>jim_<SPAN class=correction id=""><SPAN class=correction id="">busby</SPAN></SPAN>@byu.edu</TD></TR>
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<TD class=FieldLabel>To:</TD>
<TD class=FieldValue>caut@ptg.org</TD></TR>
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<TD class=FieldLabel>Subj<SPAN class=correction id=""><SPAN class=correction id="">ect</SPAN></SPAN>:</TD>
<TD class=FieldValue>Re: [CAUT] breaking strings, <SPAN class=correction id=""><SPAN class=correction id="">Kawai</SPAN></SPAN> <SPAN class=correction id=""><SPAN class=correction id="">KG-2A</SPAN></SPAN> (1997)</TD></TR>
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<TD class=FieldValue id=AttachedMessageDate>Fri, 24 Nov 2006 12:20 PM</TD></TR></TBODY></TABLE></div>
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<div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Hi,</SPAN></FONT></div>
<div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"> </SPAN></FONT></div>
<div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">I haven’t measured it but the angle looks “normal” (within range), but I will check it along with the other things you mentioned. Good list.</SPAN></FONT></div>
<div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"> </SPAN></FONT></div>
<div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">We keep the hammers shaped and voiced regularly so I don’t believe it is that. Since it is mostly the <SPAN class=correction id=""><SPAN class=correction id="">Kawais</SPAN></SPAN> that break more I’m suspicious of “scaling anomalies” and such, but since having several “CAUT witnesses” of the string fatigue diagnosis my bet is it’s probably that. </SPAN></FONT></div>
<div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"> </SPAN></FONT></div>
<div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Thanks again,</SPAN></FONT></div>
<div class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Jim <SPAN class=correction id=""><SPAN class=correction id="">Busby</SPAN></SPAN> BYU</SPAN></FONT></div>
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<div class=MsoNormal><B><FONT face=Tahoma size=2><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"> caut-bounces@ptg.org [<SPAN class=correction id=""><SPAN class=correction id="">mailto</SPAN></SPAN>:caut-bounces@ptg.org] <B><SPAN style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Geoffrey Pollard<br>
<B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Thursday, November 23, 2006 4:23 AM<br>
<B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> College and University Technicians<br>
<B><SPAN style="FONT-WEIGHT: bold">Subj<SPAN class=correction id=""><SPAN class=correction id="">ect</SPAN></SPAN>:</SPAN></B> Re: [CAUT] breaking strings, <SPAN class=correction id=""><SPAN class=correction id="">Kawai</SPAN></SPAN> <SPAN class=correction id=""><SPAN class=correction id="">KG-2A</SPAN></SPAN> (1997)</SPAN></FONT></div>
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<div style="MARGIN-BOTTOM: 12pt"><FONT face="Times New Roman" size=2><SPAN style="FONT-SIZE: 10pt">Hello Jim,<br>
<br>
I would try to get a good handle on front duplex to capo string angles as part of information gathering during rescaling. It is not unknown for this angle to be excessive in <SPAN class=correction id=""><SPAN class=correction id="">Kawai</SPAN></SPAN> piano trebles at times. If the angles are OK (11 - 20 degrees - perhaps using Ron <SPAN class=correction id=""><SPAN class=correction id="">N's</SPAN></SPAN> device shown in his 9/11/06 post on this list) - then wire fatigue, hard hammers, flat hammers, scaling anomalies, capo profile, string cushion friction (in no particular order) are some likely culprits in my view.<br>
<br>
Regards,<br>
Geoffrey Pollard<br>
<br>
<br>
-----Original Message-----<br>
From: caut-bounces@ptg.org on behalf of Jim <SPAN class=correction id=""><SPAN class=correction id="">Busby</SPAN></SPAN><br>
Sent: Tue 11/21/2006 12:20 PM<br>
To: College and University Technicians<br>
Subj<SPAN class=correction id=""><SPAN class=correction id="">ect</SPAN></SPAN>: [CAUT] breaking strings, <SPAN class=correction id=""><SPAN class=correction id="">Kawai</SPAN></SPAN> <SPAN class=correction id=""><SPAN class=correction id="">KG-2A</SPAN></SPAN> (1997)<br>
<br>
List,<br>
<br>
<br>
<br>
We have four <SPAN class=correction id=""><SPAN class=correction id="">KG-2As</SPAN></SPAN> that now break strings regularly (weekly) in octaves<br>
5-7. The bass is also becoming "<SPAN class=correction id=""><SPAN class=correction id="">thumpy</SPAN></SPAN>". Granted, they are very heavily<br>
used (Up to 17 hours a day), but we try to keep them voiced and<br>
regulated so I don't believe maintenance is the issue; I think the<br>
strings are simply fatigued. (I can break strings myself with 20 - 30<br>
good solid blows.) I tried decreasing the blow to give a bit less power<br>
hoping that it would diminish the breakage, and that helps somewhat, but<br>
I don't like to sabotage piano performance just so I can work less...<br>
BTW, the strings break mainly at the v-bar.<br>
<br>
<br>
<br>
I will be <SPAN class=correction id=""><SPAN class=correction id="">restringing</SPAN></SPAN> these pianos next month (I've HAD IT with them...)<br>
so does anyone have any advice concerning the scaling, etc.? I will be<br>
dressing the V-bar and doing all the usual prepping. This is a high<br>
tension scale and I'd love to redesign it but don't want to put that<br>
kind of time and money into these...<br>
<br>
<br>
<br>
Any helps out there???<br>
<br>
<br>
<br>
Thanks.<br>
<br>
<br>
<br>
Jim <SPAN class=correction id=""><SPAN class=correction id="">Busby</SPAN></SPAN> BYU<br>
<br>
<br>
<br>
<br>
<br>
<br>
</SPAN></FONT></div>
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