This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Hi Dale, This is another one of those "please explain" threads with no proven = answers. Whilst I was in China I went to a City called Yenti ?. there was a piano = manufacturer there that was making upright pianos based on the Kawai = piano. Now these pianos had soundboards with tapered ribs but, the ribs = ended about 1" before the rim and was terminated by a screw through the = soundboard, rib and into a holding block of wood. This meant that the board was fixed at its outer edge only by the board = itself. To me this is getting into the radio speaker method with a freer edge to = allow the board to be more sympathetic to the strings vibrations. All my work in China was done through interpreters so I may have some = miss information but I saw the soundboard with my own eyes. Regards Tony ----- Original Message -----=20 From: Erwinspiano@AOL.COM=20 To: pianotech@ptg.org=20 Sent: Friday, July 19, 2002 12:14 AM Subject: Re: Untapered Soundboard Ribs I believe that"s the concept but in practice how much tapering is up = for grabs. Remember the George Fredrick Stein grand piano I posted about = a while back? Same deal as the Mehlin. Zip taper nice sound. Funny you = should bring this up As I've been thinking about this lately too. One thought is I think too much thinning is overrated. Second = though is that a rib with a cut radius does taper from the middle out = any way so just feather that off into the notch but not as severe as the = old style. I,m doing a Baldwin right now that I'm trying this on. On the = long ribs I think this is not a huge risk but up along the belly rail = where traditionally the cutouts are mighty severe and intentional leads = me to believe this is more critical especially as the bridge gets closer = to the belly rail, know what I mean? It would seem that if the killer = octave lacks stiffness in that area any way why thin it out? This is my = question. I'd like to hear other opinions as well. >>>>>>>>>Dale Erwin>>>>>>>>>>> Tony Caught Darwin Australia caute@optusnet.com.au --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.373 / Virus Database: 208 - Release Date: 01/07/02 ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/0e/11/35/b0/attachment.htm ---------------------- multipart/alternative attachment--
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