DC

[Jonathan Finger]

Unfortunately, no sunshine at night, we're not that far north.
Otherwise I'd be able to climb round the clock.  :(

Oh, I get it, it was a joke.......  =Þ     Yes, the temperature still
drops here at night, as it does everywhere on earth when the sun goes
down.

I do have a friend working at a facility in Antarctica, if you'd like to
email him about temperature and humidity differences between high and
low sun.  I'm not sure they have a piano there though.

Admittedly, I don't document things as well as I should sometimes.  I
don't recall what the smallest variance has been.  I know that with
nothing, the piano will suffer 20-30 cents every 6 months, sometimes
more when the fall transition happens, and the heaters come on.  Since
most of my customers play their pianos a lot, I don't know that I have
anyone who's piano stays within 2 cents.  Many of my customers are, or
have been performance students.  They tend to play a little harder than
the average 6 year old, and for hours a day.  What I mean to say with
this, is that while I haven't measured it, I'm sure their pianos vary by
more than 2 cents a year.  I don't know that I've ever seen a regularly
played piano that would stay within 2 cents in 12 months.  No matter
what the environment.  Of course I could be wrong.  :)

I have kept track of RH levels though, and know that the unit keeps
things in what I would consider (at least for this environment) an ideal
range.  Different pianos react differently in different situations, so
I'm not sure that your question is a fair one.  But like I said, I have
kept track of RH levels, and this is what I'm most concerned with.  The
stability it provides is seen in the way the piano holds up.  But that
stability is completely relative to it's stability before it's climate
was controlled.




Best Wishes,

Jonathan Finger RPT



-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On
Behalf Of Don
Sent: Thursday, February 13, 2003 11:20 PM
To: Pianotech
Subject: RE: DC

Hi Johanthan,

I'm glad the sun shines at night in your location! *grin*.

Have you documented piano stability of less than 2 cents on any note
over a
one year period with these units? 

At 08:25 PM 2/13/2003 -0700, you wrote:
>Well for one Greg, all but the high end April Air units are based on
the
>"water wall" method.  I'm not saying that it doesn't work, however it
>isn't the best solution for the environment here.  Temperatures might
>get cold here, but we also have 300 days of sunshine a year.  Couple
>that with a mile less atmosphere between us and that sun, and you have
a
>pretty intense heat source.  Even if the temp is below 30 degrees
>outside, the sun itself is very warm.  With this kind of intense sun, a
>houses heater might only run a couple of times during the day here.
>

Regards,
Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T.

mailto:pianotuna@accesscomm.ca
http://us.geocities.com/drpt1948/

3004 Grant Rd.
REGINA, SK
S4S 5G7
306-352-3620 or 1-888-29t-uner
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