<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD><TITLE>Steinway repetition center pin height</TITLE> <META http-equiv=Content-Type content="text/html; charset=iso-8859-1"> <META content="MSHTML 6.00.2800.1593" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>sorry hit the send button by mistake,</FONT></DIV> <DIV><FONT face=Arial size=2>to continue</FONT></DIV> <DIV><FONT face=Arial size=2>...5 1/8" from the centerpin of the hammershank flange to the center line of the hammer moulding.</FONT></DIV> <DIV><FONT face=Arial size=2>Also</FONT></DIV> <DIV><FONT face=Arial size=2>The action stack height, as determined by the thickness of the mounting blocks. This action height is unique for each instrument, and is the result of the individual string height for a piano. String height variables are the result of the plate fitting and belly operations.</FONT></DIV> <DIV><FONT face=Arial size=2>SET ADJUSTABLE GAUGE for the string height at note #62.</FONT></DIV> <DIV><FONT face=Arial size=2>the gauge is set up in such a way that the relationship between the action stack and the string height is maintained.</FONT></DIV> <DIV><FONT face=Arial size=2> : this ensures, A) the proper BLOW distance at the same time the hammershank is properly off the rest cushion (just slightly).</FONT></DIV> <DIV><FONT face=Arial size=2> : the proper HAMMER ROTATION is needed to minimize overstriking or shallow striking condition.</FONT></DIV> <DIV><FONT face=Arial size=2>DETERMINE NEEDED HEIGHT OF MOUNTING BLOCKS</FONT></DIV> <DIV><FONT face=Arial size=2>Plane bass and treble action mounting blocks so that the two flange centerpins are in alignment with the gauge's referance points.</FONT></DIV> <DIV><FONT face=Arial size=2>Fit center wedges so that the front and rear feet of each action hanger SLIGHTLY rests on the blocks, at the same time, maintaining the STRAIGHTNESS of the frame. Continually check for straightness with the straightedge on top of the hammershank flanges."</FONT></DIV> <DIV><FONT face=Arial size=2>That is from the horse's mouth.</FONT></DIV> <DIV><FONT face=Arial size=2>We have found that sometimes the mounting blocks have been trimmed by others or for other purposes such as stopping "catastrophic action failure."</FONT></DIV> <DIV><FONT face=Arial size=2>In general if you raise (shim) or lower (plane) the height at the center pin you should do the opposite to the front foot so as not to throw the hammer fore or aft. You want to rotate as you raise or lower. The pin is the pivot point. </FONT></DIV> <DIV><FONT face=Arial size=2>I hope this a help. The bore is expected to be 2 1/4" in the bass and 1 15/16" throughtout the treble. We do not find varying the bore to be a good idea, however, sometimes the strike line is not straight. Hammers could vary around the 5 1/8" spec.</FONT></DIV> <DIV><FONT face=Arial size=2>In other words vary the stack height before fudging anything else based on your string height average compared to spec.</FONT></DIV> <DIV><FONT face=Arial size=2> If you would like more info, like current boring angles etc., let me know. I am leaving for KC tomorrow. And will not be able to help while I am there. </FONT> </DIV> <DIV><FONT face=Arial size=2>Best of luck.</FONT></DIV> <DIV><FONT face=Arial size=2>Chris Solliday</FONT></DIV> <BLOCKQUOTE style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=dcbrown5@exchange.asu.edu href="mailto:dcbrown5@exchange.asu.edu">David Brown</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=caut@ptg.org href="mailto:caut@ptg.org">caut@ptg.org</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, June 12, 2007 2:20 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> [CAUT] Steinway repetition center pin height</DIV> <DIV><BR></DIV><FONT face="Verdana, Helvetica, Arial"><SPAN style="FONT-SIZE: 12px">Dear List--<BR><BR>Anyone know offhand the spec for the center pin height from the key bed for a S&S rep? This is a relatively new model D. Or an even better question is – how to determine if an action stack is tipped front to back? We are re hammering our American and sample bore distances and subsequent regulation leave us wanting more.  We plan to continue on by checking convergence etc. Enquiring minds and all!<BR><BR>Thanks in advance-<BR><BR>David<BR><BR> <BR>David C. Brown <BR>Arizona State University<BR>School of Music<BR>Piano Technician<BR>1-480-965-6760<BR>david.c.brown.2@asu.edu<BR><BR></BLOCKQUOTE></SPAN></FONT></BODY></HTML>