That's the interesting question. And that was my point. Thanks, David. Paul In a message dated 2/7/2010 7:18:23 P.M. Central Standard Time, davidlovepianos at comcast.net writes: I've found the same thing. Strike line deviation being necessary on original boards but when I replace the board on the same piano with a RC&S board the strike line seems to straighten out, or the curve becomes unnecessary. What's that about? David Love www.davidlovepianos.com -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Ron Nossaman Sent: Sunday, February 07, 2010 3:31 PM To: pianotech at ptg.org Subject: Re: [pianotech] Hammer strike line. Was-----Yamaha Hammer Suggestion William Truitt wrote: > I too have staggered the strike line on Steinway grands and other pianos > to find the sweet spot and get the best tone. So let's ask the question > of the why of that - what is going on in the plate and string interface > in relation to the action that requires something other than a straight > line to achieve the best tone? Look at where the farthest deviation from a straight line is. Gee, that looks like the most universally problematic part of Steinway, and other largely panel supported crown, scales. How can there possibly be tonal problems in the killer octave? Must be the plate casting. As I periodically repeat, I find this phenomenon to not be obvious in low compression and adequately supported RC&S systems. I still check now and then, but find the difference, if I can detect any at all, to not be worth the trouble to deviate from the straight line on a new RC&S board. On an original board, it's likely obvious enough to be worth the trouble. I think it's primarily the soundboard. Ron N -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100207/b0acb8b3/attachment.htm>
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