This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Re: Sohmer Agraffe Bridges - Photos wanted! ?Hello Ron O! ----- Original Message -----=20 From: Overs Pianos=20 To: Pianotech=20 Sent: Sunday, February 22, 2004 1:18 AM Subject: Re: Sohmer Agraffe Bridges - Photos wanted! ? I converted them to greyscale to reduce the image size for the web. What are the agraffes made of? Brass? I doubt if his bridge will have structural problems due to the = laminations or the absence of a cap, since the agraffes aren't quite as = hard on the bridge as a conventional pinning set up, but the 24 mm = bridge height of the Stuart is probably too low. To my knowledge there = is only one other contemporary concert grand manufacturer who uses 24 mm = low bridges. Neither have inspired emulation. Who is this manufacturer? I'm not sure. More than a rule would be required to ball-park it. So = far I haven't gotten around to making a device for measuring it. = Furthermore, the ribbing is very light (typical rib sections 20 mm wide = by 20 - 21 mm deep -19 of them on the concert piano) so that it wouldn't = stand for much in way of down bearing force. Do you happen to have a picture of the Stuart piano's soundboard? I'd = like to see both sides. Indeed, but I'm not sure that effective clamping of the string to the = bridge is all we should be striving for. I suspect that down bearing = might be required for the effective transmission of the lower partials. = Now I realise that in a number of posts from credible members of this = list, it has been claimed that down bearing is not necessary for the = production of satisfactory tone, but I remain unconvinced at this stage. What makes you think that lower partials won't be transmitted unless = there is some downbearing? I f I understand things right, and downbearing stiffens the soundboard, = then it should also mean that low frequencies are less readily = transmitted. I might have understood this the wrong way though. Calin Tantareanu ---------------------------------------------------- http://calintantareanu.tripod.com ---------------------------------------------------- ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/9f/ff/b1/18/attachment.htm ---------------------- multipart/alternative attachment--
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