You'll have to live with maybe. I do. Six impossible things before breakfast and all of that...And it's totally irrelevant which side I fall on. No need to be pushy.:-) Hamburg used this bed/frame curving up to a point, and no longer do. New York gave up doing this years ago. See the attached communication from Horace Greeley from 1997. Paul In a message dated 10/12/2010 5:08:17 P.M. Central Daylight Time, JD at Pianomaker.co.uk writes: At 17:01 -0400 12/10/2010, PAULREVENKOJONES at aol.com wrote: >...I can see the argument for mimicking the string plane curve (maybe)... Well, can you or can't you? And if you can, how and why? I can send you a few sample Steinway strike height curves if you like and you can tell us how on earth they can be mimicked in the key levels. The way I understand it (and I too am open to correction) is that the key bottom (sic, NOT 'key bed') of the Steinway is arched at the front (only), being one millimetre higher in the middle. When the key blocks are screwed down, the front rail is bent to follow this very slight curvature and to press closely against the key bottom so that there can be no knocking of the front rail against the key bottom. The keys are raised to follow this curve and, in an ideal case, the total thickness of the punchings required under the front baizes will be the same throughout the scale. JD -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20101012/02bee53a/attachment-0001.htm> -------------- next part -------------- A non-text attachment was scrubbed... Name: New Microsoft Word Document.doc Type: application/octet-stream Size: 28160 bytes Desc: not available URL: <http://ptg.org/pipermail/pianotech.php/attachments/20101012/02bee53a/attachment-0001.obj>
This PTG archive page provided courtesy of Moy Piano Service, LLC