[CAUT] Petrof tuning

[Timur Rizayev]

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Hallo. I 'm piano technician from Uzbekistan work at College of Music,
Mahidol University, Thailand. In my country has and had a lot of the pianos
"Petrof", "Weinbach", "Schoelze", "Roesler". At my home the Upright
"Roesler" "Rigoletto" has been out of tune in anytime of October, when is
usually cold room air before heating turn on. After one-two weeks heating t=
o
start, the piano in tune again. I suspect, it is happend by responcing the
soundboard and string contracting. Probably, you have the same case.
With besr regards
Timur Rizayev
piano technician
Thailand.


On 12/8/05, Leslie W Bartlett <l-bartlett@sbcglobal.net> wrote:
>
> I need some speculative advice about a tuning.
>
> The piano a 6'4" Petrof.  I've tuned it for six years, and it has been
> very stable until today....  Humidity was between 36-40%.   The piano was
> 6-15 cents flat in the bass, 24 cents right after the break,  +or- a cent=
 or
> two in the center, and up to 30 cents flat in the top.  I've never had
> problems with this piano before.    When we had our first little cold sna=
p
> (ok, 50 degrees isn't really cold......) she says her heater was off for =
two
> days...       She also has been a prissy little player, but recently has
> been playing pretty hard.  I tend to pound things in pretty well, and my
> tunings are quite stable..  This thing has be really baffled.  Any though=
ts,
> les bartlett
> houston
>

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