David: I only have 2 at SMU - former Steinway Ds that are now Nossaman D+s. Both are in rooms with (kind of) matching pianos. One is in a studio with another stock D (1989) the other in an auditorium with a CFIIIS. The auditorium is well regulated temp and humidity wise because of $1,000,000 pipe organ in the room. Neither of those pianos change pitch very much and they are tuned too often to really compare. The other is in a professor's studio that varies like the rest of the building. When the Nossaman D+ goes 1-2 cents in either direction, the stock D will be 6 or 8 cents off. That's just anecdotal research, but it has been consistently that way for the 4.5 years we have had it. dave David M. Porritt, RPT dporritt at smu.edu -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of David Ilvedson Sent: Tuesday, April 06, 2010 12:16 PM To: pianotech at ptg.org Subject: Re: [pianotech] Pitch change, etc. "For instance, I've noticed, and it's been mentioned by others, that my RC&S rebuilds with epoxy laminated bridge caps stay in tune better than everything around them." How many pianos do you have out there, Ron? Sounds a wee bit unsubstantiated...to me. David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: "Ron Nossaman" <rnossaman at cox.net> To: pianotech at ptg.org Received: 4/6/2010 9:43:59 AM Subject: Re: [pianotech] Pitch change, etc. >Joseph Garrett wrote: >> Ron N said: "We getit, it's just not informative." >> >> Ron, >> What's with the "We"?? Got a frog in your pocket er sumpin'? Please >> INFORM me why the fact that the whole piano is moving is not >> informative?? Most techs do not visulize this concept, IMO. I'm sure, in >> your infinate wisdom, that YOU get it. Because of this, I was not, >> specifically, addressing your majesty. >> Just a thought. >Joe, >I thought it's been pretty apparent all along that everything >made of wood moves with humidity changes. Maybe not, but it >should be. Why would a piano be any different? Some of us are >interested in another level of specifics for educational >purposes. For instance, I've noticed, and it's been mentioned >by others, that my RC&S rebuilds with epoxy laminated bridge >caps stay in tune better than everything around them. They're >still made of wood, and everything is moving in them too, yet >the tuning stability is better. I'd like to know why, and what >else can be done to make them even more stable. That would >require some basic understanding of what is happening in the >other pianos, that isn't happening to the same degree in mine. >Just saying "everything moves" and stepping back doesn't >further that understanding. Ignorance can be a nice safe >comfortable cave, or a poke in the butt that gets you out >there turning over the rocks looking for answers. Ignorance >(my own) is precisely why I look for reasons for why things do >what they do. There will always be more questions than >answers, but blanket dismissal of what is obviously a complex >system doesn't turn on any lights in my house. >And you can keep the "your majesty" crack. It seems I have a >lot more questions without answers than you do. >Yours in ignorance, >Ron N
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