[pianotech] Pitch change, etc.

[Porritt, David]

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