<html> <body> David, RH greatly affects tuning pin torque.  50-60 % may read OK while 8% will read inadequate.  You may have to re-measure again in the dry season.  That is way to wide a swing.  This piano needs a cover and a DC Piano-Life-Saver-System under it.  That swing will destroy pinblocks, soundboard, bridges (bridge-pinning) etc.  There are daily (temperature related) swings that also affect the tuning.  The DC system will control those and allow the piano to be in a concert-quality tuning for more of the time.  If they won't keep a cover on it, get them to use an Edwards string-cover.  The wool will (on its own) help to contain humidity swings and with the DC system protect the entire piano, extending the conditioned environment into the action cavity.  Without this added protection you are facing an impossibility.  I suspect the numbers you have provided will negate any warranty. Good luck, Andrew Anderson   At 10:03 AM 7/23/2006, you wrote: <blockquote type=cite class=cite cite="">Patrick, Oh yes, I also plan on a fine tune procedure after I take all of the torque measurements I fell necessary. I agree with you in that the tuning process helps us become more intimate with the condition and idiosyncrasies of all the components involved. Then, perhaps, I can express any thought's I might have as to the pin tightness problem to the builder. I don't have a digital type of instrument to measure humidity. We usually have stable levels around 8 to 18 percent RH. Currently we're in a monsoon weather pattern and levels are 50 to 60 percent. It won't last long. I did send the pic's to files@ptg.org so hopefully they will be published. Thanks David Chadwick ----- Original Message ----- From: "J Patrick Draine" <jpdraine@gmail.com> To: "Pianotech List" <pianotech@ptg.org> Sent: Sunday, July 23, 2006 7:12 AM Subject: Re: Re: tuning pin torque <blockquote type=cite class=cite cite="">On 7/23/06, David Chadwick <chadwick61@cox.net> wrote: <blockquote type=cite class=cite cite=""> I have not done any previous tuning on the piano.</blockquote> Aside from the thorough measurement of pin torque that you're planning on doing, I do hope you will be tuning the instrument as well. While hard numbers are difficult to argue with, there's a great deal that you can learn about the piano as you tune, even if the words one uses to describe it may be compartatively subjective. And yes, we're eager for the photos! If they're big send them to files@ptg.org. Also, I think in the interest of fairness (or thoroughness) I think it is important to measure the RH accurately, probably with a sling psychlometer (sp?). And a good idea of what extremes the piano may go through daily (searing stage lights, constant or intermittent intense blasts of frigid AC, etc.). Good luck and happy investigations, Patrick Draine </blockquote> </blockquote></body> </html>