The C#5 on our concert D has a bit looser pin on the left unison, and also a pretty bad false beat that I can't eliminate. If nothing else goes out of tune, that string will, and the looser pin is the only explanation I can come up with. I've even driven it deeper with not much better results. I haven't measured the torque, but it is definitely looser than its neighbors. Jeff On Oct 31, 2006, at 4:00 PM, Willem Blees wrote: > Does a marginally loose tunig pin cause the string to go out of tune > during heavy playing? On the D in the concert hall, I had to replace a > pin that was damaged during the vandalism 4 years ago. The string has > long since stretched, but it goes out of tune too much, especially > during heavy playing. The pin has probably about 35" - 40" pounds on > it. (I haven't measured it, but that is what it feels like). > > Comments, opinions. > > Wim > Willem Blees, RPT > Piano Tuner/Technician > School of Music > University of Alabama > Tuscaloosa, AL USA >
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