<font color='black' size='2' face='arial'> <div>Zach</div> <div> </div> <div>Jim Ellis, RPT has done some extensive research on this subject. I believe he even write a report about it in the Journal. He has also given classes at several seminars. I haven't heard from Jim for several years, so I don't know his health status. But maybe you can reach him at <A href="mailto:jfellis1928@comcast.com">jfellis1928@comcast.com</A>. He is a member of the Knoxville chapter. </div> <div> </div> <div>Back in about 1982, I and two other members of the St. Lois chapter did a master tuning on a piano in a church. We were given permission to take as long as needed. It was cold outside, but when we started the temperature in the sanctuary was about 70 degrees. After 4 hours we were about ready to finish up when we noticed a slight discrepancy in the temperament octave and discovered that the entire midrange had dropped a couple of cents. We then realize that the temperature had dropped about 10 degrees, but we had been concentrating so much on the tuning that we hadn't noticed. Apparently the last person to leave the church had turned down the thermostat. Needles to say, we had to give up the master tuning after 4 hours of work. </div> <div> </div> <div>Wim Blees, RPT</div> <div>Honilulu, HI<br> <br> </div> <div style="CLEAR: both"></div> <br> <br> <div style="FONT-FAMILY: arial,helvetica; COLOR: black; FONT-SIZE: 10pt">-----Original Message-----<br> From: Zachary LaMotte <zachlamotte@gmail.com><br> To: pianotech <pianotech@ptg.org><br> Sent: Mon, May 9, 2011 5:25 am<br> Subject: [pianotech] Experiences of Temperature on Tuning Stability Inquiry...<br> <br> <div id=AOLMsgPart_1_d43f58ad-823a-451c-9a06-612e3e6058f1>Dear Fellow Mailing-List Members- <div><br> </div> <div>I am Zach LaMotte (current student at CSPT and newly applied associate member for the PTG!).  After extensive research on past discussions in the forums, I have found a lack of talk on the effect of temperature on tuning stability.  I am well-read on the impact humidity plays on the piano.</div> <div><br> </div> <div>I am requesting (kindly asking/begging) for any experiences, references, crazy stories, where any of you may have had temperature, not humidity, playing a factor on tuning stability. This could be an outside concert situation, stage light situation, mother-in-law making you raise the temperature in the house situation, etc.  I will be conducting a temperature-based experiment and will share my findings once the experiment is finished.  Thanking all of you in advance.</div> <div><br> </div> <div>-Zachary LaMotte</div> <div>"Aspiring Piano Tuner"<BR clear=all><br> -- <br> Be Well,<br> <br> Zach LaMotte<br> <A href="mailto:zachlamotte@gmail.com">zachlamotte@gmail.com</A><br> </div> </div> </div> </font>