[pianotech] Tuning stability problem

[Paul McCloud]

Hi, Lim:
	I've not seen any stability problems with pianos on stage trucks (trolly).
You might try tightening the bolts, but I don't see how a stage truck would
alter the tuning.  You might look at other factors like temperature changes
or air movement over the piano as you tune.  Is there direct sun on the
piano?  Stage lights?  Did you move the piano just before tuning?  I've not
tuned one of these, so I couldn't comment on how they tune.  Some Kawai
pianos are challenging to tune, hard to dial in unisons, etc.  Maybe Don
Mannino can jump in here.  (SK-7 is Shugeru Kawai, no?)
	Paul McCloud
	San Diego


> [Original Message]
> From: <limhseng at gmail.com>
> To: <pianotech at ptg.org>
> Date: 09/21/2010 4:00:01 AM
> Subject: [pianotech] Tuning stability problem
>
> Hi 
> When a grand piano sits on a Y type trolly, will there be tuning
stability problems? I tuned a SK7 which sits on a Y trolly and I have a
hard time on the octaves and unisons from key 55 onwards.
>
> Regards
> Lim
> Sent from my BlackBerry Wireless Handheld 
> Powered by Gee! from StarHub