moving instability

[Stephen Airy]

They've been stable since then, although recently we
moved the piano cross country and I haven't gotten a
chance to play it since.

--- baoli liu <baoli_liu@yahoo.com> wrote:
> Dr. Yat Lam Hong has written an article about the
> subject in the journal in 1975(or 1976?).
> Upright piano with four casters may be "twisted"
> after
> moving,this will cause the pitch changeing;the grand
> piano with three casters will not be twist after
> moving,the pitch should be stabal.
> 
> As for the "badly out of tune" unions you
> mentioned,I
> dont think it's because of the twist,there must be
> other reasons,such as loosed or unstable pins,pitch
> raise or pitch lower befor fine tuning,etc'.
> 
> Baoli Liu
> 
> --- Stephen Airy <stephen_airy@yahoo.com> wrote:
> > I remember a time several years ago my family
> moved
> > our old Hallet & Davis 52.5" upright across the
> > living
> > room and back.  The unisons were badly out of tune
> > in
> > the middle section.
> > 
> > --- Marcel Carey <mcpiano@globetrotter.net> wrote:
> > > Hi,
> > > This morning as I was tuning two U1s in a
> practice
> > > room at the university, I used RCT for the first
> > one
> > > and tuned the other one aurally. To compare
> > > afterwards, I moved the first piano so the two
> > > keyboards would be perpendicular to each other.
> To
> > > my surprise, the piano that I moved was flat
> (this
> > > is the one I did with RCT). So, I took some
> > > readings. In the new position, 
> > > A3= -3.4¢. I returned the piano to it's original
> > > position and A3 went right back to 0¢....
> > > I never thought there could be so much
> difference
> > > just by moving the thing around. 
> > > So, beware,
> > > 
> > > Marcel Carey
> > > Marcel Carey, accordeur technicien
> > > (819) 564-0447
> > > mcpiano@globetrotter.net
> > > 
> > 
> > 
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