---------------------- multipart/alternative attachment In a message dated 4/8/2005 7:22:40 A.M. Central Daylight Time, draine@comcast.net writes: There's always some bad apples in the barrel. Especially when the (vintage '60s thru early '80s) barrel is labeled "Kimball", "Kohler & Campbell", or "Wurlitzer." If the customer puts in a DC system -- with a back cover -- they should find the piano achieving stability. Otherwise, it's time for a better piano. Patrick Draine Patrick, Thanks for your reply. While I agree with you, (and I have trashed many such pianos from this era), I still am puzzled how the piano belly gained so much energy in such a short period of time and with very little climate change. You would expect a piano which has a 40 year history of wild pitch swings like what has been observed so far to be breaking apart some where by now. But outside of the bass bridge beginning to split on the waste end, I could find nothing structurally wrong. Since it has a very fancy cabinet and a surprisingly nice tone we would like to try to save the piano for the customer. Granted, economically speaking, this piano is not worthy of any extreme measures of life support, however I would like to learn something here. Since I can't find an obvious reason for the problem, I can't point to the over dried board, which is now swelled and broken itself from the ribs, (seen plenty of these) I am curious as to the dynamics of what is going on. I understand how a standard spruce soundboard absorbs moisture, etc. but what about a laminated board? I would have assumed greater stability, am I wrong? Who knows how exactly Kimball put the soundboard together, but as a general rule what would the expectations be for a laminated soundboard? Spruce boards will move the most in the middle of the scale, do laminated soundboards move across the entire scale like this one has? Just trying to learn. Andrew Remillard ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/f4/7f/ca/30/attachment.htm ---------------------- multipart/alternative attachment--
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