Hygrometer

[Erwinspiano@AOL.COM]

---------------------- multipart/alternative attachment
In a message dated 9/2/2002 11:32:50 PM Pacific Daylight Time, 
hufford1@airmail.net writes:


> Subj:Re: Hygrometer 
> Date:9/2/2002 11:32:50 PM Pacific Daylight Time
> From:<A HREF="mailto:hufford1@airmail.net">hufford1@airmail.net</A>
> Reply-to:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A>
> To:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A>
> Sent from the Internet 
> 
>    Hi Robin

       I've only seen this  once on an older Stwy A-3 The bottom end had 
crown and bearing but the top end had reversed crowned and too much bearing. 
Bottom end sounded fine but the top end not so good. I have also seen one A-2 
that had excess bearing that literally forced the bridge down in a way that 
created a trough effect in the board. The board was basically flat. I think 
this occurs when the bearing is set at the factory. I believe the board is to 
dry and the crown shrunk down too much before the too much bearing load is 
applied. This is another reason for humidity controlled environments. Reverse 
crown isn't all that common in my experience but flattened and cracked up 
boards are the norm.
    Regard>>>>>>>.Dale Erwins>>>

> 
> Hello Dale,
>      I know people are going to jump all over me for saying this but I
> seldom see complete crown failure in older Steinways and other high
> quality grands,  and this in North Texas (DFW) where there is a
> substantial swing in the climate over the seasons.  The boards may have
> cracks, and even these are, in my experience, frequently predictable as
> to their probable location,   but there is seldom,  a complete loss of
> crown.  Flame suit on, water bucket handy and fire extinguisher nearby.
> Regards, Robin Hufford
> 


---------------------- multipart/alternative attachment
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/04/4c/2d/80/attachment.htm

---------------------- multipart/alternative attachment--