[CAUT] Case of the mysteriously breaking treble strings

[Scott E Thile]

How about incorrect plate or bridge position or some shift of some kind
causing the speaking length to be too long? 

> -----Original Message-----
> From: caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] On 
> Behalf Of Conrad Hoffsommer
> Sent: Wednesday, October 05, 2005 7:24 AM
> To: College and University Technicians
> Subject: RE: [CAUT] Case of the mysteriously breaking treble strings
> 
> JeffO,
> 
> You didn't say _where_ they broke, did you?
> 
> Were the pins driven so far that the string rode up and over 
> the lowest coil and broke at that point?
> 
> 
> 
> >-----Original Message-----
> >From: Jeff Olson [mailto:jlolson@cal.net]
> >Sent: 04 October 2005 22:44
> >To: College and University Technicians
> >Subject: [CAUT] Case of the mysteriously breaking treble strings
> >
> >Speaking of UFOs, I was having trouble identifying the cause for a
> >stubbornly breaking treble string in the high treble of an 
> older upright.
> >
> >It began with one string that broke twice.  The first time, 
> I assumed I'd
> >nicked it or something installation.  The second time, I 
> wondered if it was
> >hanging up on something.  But I'd cleaned and polished the 
> pressure bar, and
> >I didn't spot anything abrasive on the bridge or harp.
> >
> >Then, as I started chipping the piano to pitch, several more 
> strings broke
> >in the high treble (#13).  I decided to measure the wire, 
> though it was
> >coming fresh out of a new packet (Roslau), and was surprised that the
> >labeled 13 was actually 13 1/2.  That seemed odd, but not 
> likely to explain
> >the breakage.  In any case, I switched to 13 -- actually 
> micced it this
> >time -- and the strings still broke.
> >
> >Then, finally, I figured it out.  Any ideas about what the 
> "mystery cause"
> >was?
> >
> >Best,
> >
> >JeffO
> >
> 
> 
> 
> Conrad Hoffsommer
> I tried to get a life once, but they were all out of stock.  
> 
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