Jim - Any concise (for your sake, not mine) way of describing method used to demonstrate? David Skolnik At 10:12 AM 4/11/2004 -0400, you wrote: >Why does a string go out of tune? There are many reasons. It does NOT >necessarily mean there is something wrong with your technique. Some pianos >just simply have better unison stability than others, and all the various >reasons for this could fill a book. I won't try to list them all here. > >For what it's worth: Friction is very high between strings and bridge >pins. I have made measurements that indicate that it is necessary to >change the pitch of the speaking length of a string by 50 to 100 cents >before it will move at the bridge. This means that no matter how hard you >pound, you will NOT equalize the tension between speaking lengths and >string tails. You will break something before you can pound hard enough to >do that. What you WILL do is cause it to move if it is about ready to move >anyway. The side bearing angle of the strings at the bridge pins has a big >effect on this. I did demonstrations showing these effects at the >conventions in Kansas City and Albuquerque, and several state conferences >before that. I'm sorry, but I can't give you a quick fix for the problem. >What I can tell you is that beating the stuffings out of the piano won't >eliminate the problem. > >Sincerely, Jim Ellis > > >_______________________________________________ >caut list info: https://www.moypiano.com/resources/#archives
This PTG archive page provided courtesy of Moy Piano Service, LLC