Hi Nick, Thank you for your gracious response. I appreciate David Love's response as well. The information that you have submitted is most helpful. For the record, I like to see something in the range of 120-145 inch pounds on one of my rebuilds using a 5 ply maple block. It does tend to settle down to around 90-100 inch pounds after one year. I am not trying to protect a particular manufacture, but rather conduct a "gentleman's" inquiry allowing due process to run its course. Many thanks, James Williams From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Nick Gravagne Sent: Wednesday, February 24, 2010 12:09 PM To: pianotech at ptg.org Subject: Re: [pianotech] Tuning pin torque?!?!? Really, my friends on the list; this thread has now passed the point of Jame's simple inquiry for input RE tuning pin torque and is about to spin out of control. Where else should he go to get a simple answer to a simple question? As I read Jame's post I read four simple sentences: 1) I have recently purchased several new pianos and discovered during the initial tunings what I believe to be minimal tuning pin torque. 2) The pins feel "spongy" and difficult to set. 3) Is there an industry standard for pin torque, and if so, what should that torque value be in inch pounds? 4) Any data on this subject would be greatly appreciated. If we ignore question 1, then the following three sentences and questions cannot be clearer. Certainly, all those who would like to know the make and model of these "new pianos" James has purchased make excellent points; and yes inquiring minds do want to know. But anyone can see that Mr. Williams has personal reasons why he doesn't wish to share this piece of information. Whether we agree with what we hypothesize are his reasons for silence is not the issue. Why not respect his wishes and simply answer the uncomplicated questions he has put forth to a technical community best informed to do so. As it is, I am less curious as to the make of pianos as I am to the dearth of answers RE torque. I read only one post with an answer --- David Love's. I agree more or less with David: "Probably about 60 lbs is minimum but on a new piano you'd like to see around 90 - 120 but there is quite a range." Yes there is quite a range, but as practical tuners with thousands of tunings under our belts, we also know that there is a "tunable range" and on either side of this range the piano is "un-tunable". I also prefer the 100 lb. range (plus or minus), but Mr. Williams has told us of an exceedingly low torque. Surely no one would insist that Yamahas, for example, tune best at 75 lbs, or that Steinways must exceed 150 or there is no hope; the point being that the make of these pianos is not critical to the simple questions put forth. If we must insist on the make of these pianos, or guess as to Mr. Williams' reasons for silence, we should start another thread. Respectfully, Nick Gravagne, RPT Piano Technicians Guild Member Society Manufacturing Engineers Voice Mail 928-476-4143 ________________________________ -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100224/dd29b59f/attachment.htm>
This PTG archive page provided courtesy of Moy Piano Service, LLC