Dear list members, Do many of you agree that stability is much more important than maintaining a specific Relative Humidity level in the piano ? And that too much humidity is worse than too little ? In other words, with an adjustable humidistat (Moisture King) and one or two heat bars we can keep Relative Humidity at 30 % or even 25 % and that is good, much better than swings from 25 to 85 % RH for example ? I found nothing in the archives about this specific question. I hope to hear you about this in Vegas and here on the list. Thank you. Allan Sutton, m.mus. RPT www.pianotechniquemontreal.com 2010/6/18 Don <pianotuna at accesscomm.ca> > Hi Cy, > > As you may be aware Steinway recommends between 45% and 50%. I'm not sure > if they mean 50% plus or minus 2.5 percent or 47.5%. > > At 10:47 PM 6/17/2010 -0600, you wrote: > > Dampp-Chaser has done a lot of research on this; you can call them > >for technical reports. > > Cracked ivories due to keystick movement, warped keys and keyslips, > >heck, humidity can damage just about everything except casters! > >--Cy-- > > Cy Shuster, RPTAlbuquerque, > >NMwww.shusterpiano.comhttp://www.facebook.com/shusterpiano > >On Jun 17, 2010, at 4:49 AM, Leslie Bartlett wrote:Thanks for responses > >about humidity, specifically regarding issues with the Baldwin The same > >church has a Shigeru Kawai, and two Estonia There was a major issue with > >tuning pin torque on one Estonia He was fairly strong in his assertion > >that humidity be kept between 50-57% for the Estonias This can only be > >managed with DC units, as they have AC running in the major music centers > >of the church at all times and it is running in low-to-mid 60%. How > does > >that significantly affect things like integrity of pinblock and bridge pin > >holes being damaged by expanding/contracting of metal against wood? Is > >there any general consensus about how much the piano’s life will be > >shortened because of humidity caused wood deterioration either by crushing > >fibers, leaving looser tuning pins, and/or cracks in bridges? > > No virus found in this incoming message. Checked by AVG - www.avg.com > >Version: 9.0.829 / Virus Database: 271.1.1/2945 - Release Date: 06/17/10 > >12:35:00 > Regards, > Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T. > Non calor sed umor est qui nobis incommodat > > mailto:pianotuna at yahoo.com http://www.donrose.ca/ > > 3004 Grant Rd. REGINA, SK, S4S 5G7 > 306-539-0716 > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100620/60ff4ec9/attachment.htm>
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