Dear Clyde, My standard refrain is "the sun will come out, tomorrow..." If I waited for the weather to cooperate in Wichita Falls I would never tune a piano, I would be waiting and waiting and waiting. I have watched for the phenomenon you speak of and have noticed some drift. But pitch raises, moving the piano out from the wall and other things cause this also. I use TuneLabPro and record humidity & temperature every tuning. TuneLab tells me how much the piano changes, the humidity & temperature records tell me why. It's important to realize that if the weather outside the house is affecting the instrument enough to be a problem that you may also have friction problems in the action (the proverbial sticking key). Then the customer gets one of the nice DamppChaser brochures and we talk. But I know you know about DC! Best, Dale Dale Probst, RPT Member, TEAM2001 PTG Annual Convention Reno, NV --July 11-15, 2001 email: wardprobst@cst.net (940)691-3682 voice (940) 691-6843 fax TEAM2001 website: http://www.ptg.org/conv.htm -----Original Message----- From: owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org] On Behalf Of Clyde Hollinger Sent: Saturday, July 07, 2001 6:48 AM To: pianotech@ptg.org Subject: Rainy day tuning: Was: pitch change Friends, Years ago a client called me on the morning I was scheduled to tune her piano. She wondered if we should reschedule, since it was raining. My understanding at the time was that the tuning doesn't change that fast, so not to worry about it. But incidents such as Warren's would debunk that. The past couple of years I've heard of, and experienced, pianos changing even in the process of tuning. Jack Stebbins has a story about doing a concert tuning. He was part way finished when someone snapped the air conditioning on, which changed the tuning before he finished. What do you tell people on rainy days? Regards, Clyde Warren Fisher wrote: > Remember this piano had been very stable for years, but didn't have a > D/C system. The C of C picked up the piano at 8a.m. and installed > it on the outside porch of their building. At 10a.m., your's truly > arrived to do my thing. A4 measured 13 cents sharp!! The piano was used by the C of C until it > was returned to the caterer at 6:30p.m that day. At 9a.m. the next day, I > measured A4 again at 18 cents sharp!! For those of you still using > your forks, that's nearly a third of a half-step in 23 hours!
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