<html><head><style type="text/css"></style></head><body><div style="font-family:garamond, new york, times, serif;font-size:12pt"><DIV style="FONT-SIZE: 12pt; FONT-FAMILY: garamond, new york, times, serif">Don, would you describe the "tapping" you mention, for this newbie?</DIV> <DIV style="FONT-SIZE: 12pt; FONT-FAMILY: garamond, new york, times, serif"> </DIV> <DIV style="FONT-SIZE: 12pt; FONT-FAMILY: garamond, new york, times, serif">All--This has been a fascinating thread for me, observing the give-and-take, the points and clarifications.  Your discussion has helped me visualize and understand the concepts presented.  Thanks!!</DIV> <DIV style="FONT-SIZE: 12pt; FONT-FAMILY: garamond, new york, times, serif"> </DIV> <DIV style="FONT-SIZE: 12pt; FONT-FAMILY: garamond, new york, times, serif">Richard Morgan<BR><BR></DIV> <DIV style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman, new york, times, serif">----- Original Message ----<BR>From: Don <pianotuna@accesscomm.ca><BR>To: Pianotech List <pianotech@ptg.org><BR>Sent: Sunday, March 25, 2007 5:59:43 PM<BR>Subject: Re: String coils affect stability?<BR><BR> <DIV>Hi Ric,<BR><BR>I think the mechanism may be the height of the string leaving the pin. I<BR>suspect flag poling of the pin is fairly important (more important that<BR>most realize). The coils in any event are a small issue--and easy and quick<BR>to tap. <BR><BR>I do have one Samick grand piano that has tuning pins at all sorts of<BR>different heights. It is infrequently serviced and always for performances.<BR>I dread it and have often vowed I'd say *no* the next time they call. I<BR>guess I'm too soft hearted or too stupid to say *no*.<BR><BR>At 10:23 PM 3/25/2007 +0100, you wrote:<BR>>Interesting.  Don is one of those guys that pays attention to this kind <BR>>of detail... so if he says he's measured and observed some small <BR>>difference I certainly wont discount his claim out of hand.<BR>><BR>>I dont see the mechanism that would achieve this tho... at least not <BR>>clearly.<BR>><BR>>Cheers<BR>>RicB<BR>><BR>>    I certainly would not let down the tension to tighten coils.<BR>><BR>>    With respect, I have measured the difference in unison stability with<BR>>    sloppy coils. There is a small but measureable difference, after lifting<BR>>    coils and tapping them down to form nice tight coils on upright<BR>>    pianos that<BR>>    are 50 years old and equipped with humidity control systems.<BR>><BR>>    I routinely check each new client's piano by testing three pins. If<BR>>    there<BR>>    is no pitch drop then I accept the coils. If any of the three change<BR>>    pitch<BR>>    then I take the time to address the coils<BR>><BR>><BR>><BR>>-- <BR>>No virus found in this incoming message.<BR>>Checked by AVG Free Edition.<BR>>Version: 7.5.446 / Virus Database: 268.18.17/731 - Release Date: 3/23/2007<BR>3:27 PM<BR>><BR>><BR>Regards,<BR>Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T.<BR>Non calor sed umor est qui nobis incommodat<BR><BR>mailto:pianotuna@yahoo.com    <A href="http://us.geocities.com/drpt1948/" target=_blank>http://us.geocities.com/drpt1948/</A><BR><BR>3004 Grant Rd. REGINA, SK, S4S 5G7<BR>306-539-0716 or 1-888-29t-uner</DIV></DIV> <DIV style="FONT-SIZE: 12pt; FONT-FAMILY: garamond, new york, times, serif"><BR></DIV></div><br> <hr size=1>Now that's room service! <a href="http://travel.yahoo.com/hotelsearchpage;_ylc=X3oDMTFtaTIzNXVjBF9TAzk3NDA3NTg5BF9zAzI3MTk0ODEEcG9zAzIEc2VjA21haWx0YWdsaW5lBHNsawNxMS0wNw-- ">Choose from over 150,000 hotels <br>in 45,000 destinations on Yahoo! Travel</a> to find your fit.</body></html>