The assumption seems to be that this device works by adding "tension" and perhaps "recrowns" the soundboard. Suppose, however that it just works by stiffening the belly rail and connecting it to the mass of the rim. What would happen if you turned the turnbuckle the other way, just enough to add a little compression between the belly rail and the rim? Ed Sutton ----- Original Message ----- From: Donald McKechnie To: caut at ptg.org Sent: Thursday, May 17, 2007 10:18 AM Subject: [CAUT] killer half-octave All, Be very careful with the tension resonator. The attached picture tells why. I followed the instructions to the letter but the belly rail was not up to it for some reason. I spoke to Bob Grijalva about the problem and he said it was a first. No clue as to why this happened. The funny thing is it appears to have had no effect for the worse or better. I just left it in and has been there for about a year. This piano is due a new soundboard so the belly rail can be repaired then. Don ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ IMG_0501 Don McKechnie Piano Technician Ithaca College dmckech at ithaca.edu 607-274-3908 -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/caut.php/attachments/20070517/02bbcf73/attachment.html
This PTG archive page provided courtesy of Moy Piano Service, LLC