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Annie, without the BANG I would think it could be the pin in the frame. Donīt know the proper English term. I am talking about the pin which is on the downside of the piano, where the string is strung around. Perhaps that pin has a wrong angle, i.e. it shows too much upside. As a result, the string has no "grip" on that pin/frame. But you would see that immediateley if you have a look on that pin: the string would not rest on the frame. I tuned a piano with that damage and the effect was very close to that what you described: raising pitch is followed by strong pitch lowering. But as mentioned: without a strange BANG, just not holding the pitch.<BR>
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Gregor<BR>
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<BR><BR>> From: annie@allthingspiano.com<BR>> To: pianotech@ptg.org<BR>> Subject: explanation(s), please<BR>> Date: Fri, 21 Dec 2007 09:29:59 -0600<BR>> <BR>> A small Brambach grand did something yesterday that has left me bamboozled.<BR>> I'd appreciate any information, suggestions, advice....<BR>> <BR>> When I got there, the piano was surprisingly well in tune, considering its<BR>> overall condition. Two trichords in the 6th octave (below the break) were<BR>> playing chords, but the rest was pretty OK.<BR>> <BR>> I pulled one of the offending notes into tune, and almost immediately one<BR>> string went "BANG" and dropped pitch, taking the other with it. I pulled it<BR>> back up -- no, it had not broken -- and then both of them did the same thing<BR>> (big BANG, very flat). I've had that happen after treating pins with CA<BR>> glue, but never before, and I hadn't treated any of them at that point. (I<BR>> did later, but it didn't have much effect.)<BR>> <BR>> Here's the part that really confuses me: after that happened, one string of<BR>> a 2nd octave bichord went terribly flat on its own AND a cluster of four<BR>> trichords just above the break in the 6th octave also spontaneously went<BR>> horribly awry. I had not touched any of them.........<BR>> <BR>> The plate does not appear to be cracked, and I didn't find anything else<BR>> that looked particularly suspicious. What am I missing here (other than the<BR>> chance to call the trash collectors and get the thing hauled away)? Thanks!<BR>> <BR>> Annie Grieshop<BR>> <BR><BR><br /><hr />Express yourself instantly with MSN Messenger! <a href='http://clk.atdmt.com/AVE/go/onm00200471ave/direct/01/' target='_new'>MSN Messenger</a></body>
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