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
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