The archives might have something on this, I remember reading that the down bearing should be lessened, by redressing the bar. It might have been a suggestion by Del Fandrich, but not sure. The Steinway uprights, that I have ran across, have been hard to tune in the area with the pressure bar, due to rendering problems. No one yet, has wanted to pay me, to have this done, so don't know first hand. John Ross Windsor, Nova Scotia. ----- Original Message ----- From: Nathan Cook To: pianotech at ptg.org Sent: Thursday, January 21, 2010 2:23 PM Subject: [pianotech] pressure bar height Hello All, I am restringing a 1970 Steinway Z 45" upright. The original height of the pressure bar seems excessively low. In addition the v-bar was badly gouged in some places (perhaps from excessive string pressure?) and these notes had an unpleasant metallic zinging noise that disappeared if the strings were spaced out of the grooves. My customary approach would be to duplicate the original height. However, this piano has many other unusual factory original features; I don't want to duplicate a previous error. Given the problem the piano had before and comparatively excessive bearing, what is the best way to calculate an appropriate pressure bar height that will provide adequate speaking length termination and appropriate friction? Thank you, any input would be appreciated. -Nathan Cook ------------------------------------------------------------------------------ BUST: The magazine for women with something to get off their chests. Subscribe today at www.bust.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100121/6fcd658f/attachment.htm>
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