Contact Jim Ellis. Paul I don't think Jim will be able to help us. I haven't heard from him, but I know that he was in poor health a while back. Maybe someone from the Knoxville Chapter can fill us in on his condition. Wim -----Original Message----- From: PAULREVENKOJONES <PAULREVENKOJONES at aol.com> To: pianotech <pianotech at ptg.org> Sent: Sun, Jan 9, 2011 4:14 pm Subject: Re: [pianotech] pitch and temperature Contact Jim Ellis. Paul In a message dated 1/9/2011 3:31:27 P.M. Central Standard Time, hgreeley at sonic.net writes: Hi, Ron, Gene, At 01:22 PM 1/9/2011, you wrote: >On 1/9/2011 2:28 PM, Gene Nelson wrote: >>Curious if anyone knows of a reasonably accurate method to predict pitch >>change in a piano based on temperature change? >>Gene Nelson > >Gut Nichols had a system he liked, but I don't >remember his numbers off the top. The problem is >that it's time dependent. It might change 2¢/°F >on a minute by minute basis under stage lights, >but in the long run it doesn't seem to make a >tremendous difference. Short term, the strings >react first. Give the plate time to catch up, >and the overall difference isn't that much. I've >tuned in homes where the tuning changed back and forth as the furnace cycled. That's kind of what I remember, too; but it's been a while. >From a performance standpoint, the problem is further complicated by the ways in which orchestras play in tune or not, most often, the latter. I do agree with that things do tend to catch up over time, so am always hopeful that whatever main use of the instrument is after intermission. Has anyone ever done any substantive research on this? It seems like the potential variables could be pretty daunting. Best. Horace -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20110109/05be5fd1/attachment.htm>
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