<!doctype html public "-//W3C//DTD W3 HTML//EN"> <html><head><style type="text/css"></style><title>Re: test blows, unisons, intervals</title></head><body> <div>At 1:43 AM -0400 8/20/03, Jlmatt@aol.com wrote:</div> <blockquote type="cite" cite> <blockquote type="cite" cite><font face="Arial" size="-1">As a general rule, if unisons go out it's your technique, if the intervals<br> >go out while the unisons stay solid, it's the environment.  There are, of</font></blockquote> <blockquote type="cite" cite><font face="Arial" size="-1">>course, always mitigating factors</font><br> <font face="Arial" size="-1"></font></blockquote> </blockquote> <blockquote type="cite" cite><font face="Arial" size="-1"><br> ... is it because the right strings are shorter that they behave differently? Do you use a different technique for the left and right strings?</font></blockquote> <blockquote type="cite" cite><font face="Arial" size="-1">the piano is a Yamaha U1</font></blockquote> <div><br></div> <div><font face="Arial">Jean-Luc,</font></div> <div><font face="Arial"><br></font></div> <div><font face="Arial">I have been doing university tunings for 20 years + with numerous U1s'. Invariably, during tuning preparation for the fall semester, the tenor section and portions of the treble section, the right music wire will always be different in relation to the middle music wire as compared to the left music wire.</font></div> <div><font face="Arial"><br></font></div> <div><font face="Arial">It's quite interesting to watch as I move up the scale how the two sides will change with respect to one another.</font></div> <div><font face="Arial"><br></font></div> <div><font face="Arial">From the left side being on the flat side of the middle and the right side being sharper ...  to the left side being in tune with the middle with the right extremely sharp ... to the left side being extremely flat with the right side in tune with the middle.</font></div> <div><font face="Arial"><br></font></div> <div><font face="Arial">I can literally anticipate for the most part what to do with each next note in a pitch change pass.</font></div> <div><font face="Arial"><br></font></div> <div><font face="Arial">This phenomena has been discussed in the past. The first person I know that addressed such an issue was Jim Coleman, Sr., then latter some mention was made on this list.</font></div> <div><font face="Arial"><br></font></div> <div><font face="Arial">To date I don't know that anyone as affirmatively nailed the reasons for this. However, the most prominent realities are the string segment lengths from the pressure bar to the tuning pins as you have mentioned, and where the music wire crosses over the bridge.</font></div> <div><font face="Arial"><br></font></div> <div><font face="Arial">It is interesting indeed!</font></div> <div><font face="Arial"><br></font></div> <div>Keith McGavern<br> Registered Piano Technician<br> Oklahoma Chapter 731<br> Piano Technicians Guild</div> <div>USA</div> </body> </html>