<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 10 (filtered)"> <title>Re: duplex position</title> <style>  </style> </head> <body lang=EN-US link=blue vlink=blue id="role_body" bottommargin=7 leftmargin=7 topmargin=7 rightmargin=7> <div class=Section1> Generally, you don’t have that much room to play around with these.  If you are tuning them then you need to hit some whole number relationship.  If not, then the farther back you can push them (toward the hitch pins) the better, keeping in mind that the bearing will change depending on where they end up.  Tuning aside, I find that Steinways usually don’t have a long enough backscale.  The shorter the backscale, the lighter the bearing needs to be and sometimes those two requirements can be at odds, especially when a compression style board is asking for more bearing to get things stiff enough which ends up just tying down the bridge because of the short backscale and around and around.  Choose your poison.      <div> David Love davidlovepianos@comcast.net www.davidlovepianos.com </div> -----Original Message----- From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of David Ilvedson Sent: Thursday, January 03, 2008 8:59 AM To: pianotech@ptg.org Subject: Re: duplex position   <div>   </div> So half the speaking length... David Ilvedson, RPT Pacifica, CA 94044 <div style='border:none;border-left:solid black 2.25pt;padding:0in 0in 0in 4.0pt'> <div class=MsoNormal align=center style='margin-left:.5in;text-align:center'> <hr size=2 width="100%" align=center> </div> Original message From: Erwinspiano@aol.com To: pianotech@ptg.org Received: 1/3/2008 2:30:47 AM Subject: Re: duplex position <div>   Hi Frank <div>   Although you are correct about this for many pianos, the Steinway B's rear duplex string length doesn't follow this. it's an octave higher </div> <div>   Dale </div> <div>   </div> <div>   </div> <div> David, et al, I cannot speak to the specific make, model, and era of your piano, but typical of pianos with this type of duplexer, the distance from the back bridge pin to the duplexer at note 88 is equal to the speaking length.    One can go a step further, and after stringing, nudge the duplexer in or out, to "tune" the duplex length to sound in unison with the speaking length at note 88.  Whether one believes that "tuning" the duplexer is effective, it was probably the design intent, if you find that the original position of the duplexer suggests this relationship between the duplex length and the speaking length. </div> </div> <div>   </div> <div>   </div> <div> <div class=MsoNormal align=center style='margin-right:0in;margin-bottom:0in; margin-left:.5in;margin-bottom:.0001pt;text-align:center'> <hr size=2 width="100%" align=center> </div> See AOL's <a href="http://food.aol.com/top-rated-recipes?NCID=aoltop00030000000004" target="_blank" title="http://food.aol.com/top-rated-recipes?NCID=aoltop00030000000004">top rated recipes</a> and <a href="http://body.aol.com/fitness/winter-exercise?NCID=aoltop00030000000003" target="_blank" title="http://body.aol.com/fitness/winter-exercise?NCID=aoltop00030000000003">easy ways to stay in shape</a> for winter. </div> </div> </div> </body> </html>