Yamaha out of tune (THE SOLUTION)

[Joe & Penny Goss]

Whoa that is a new one to me. Me thinks you have solved the mystery. Let us
know
Joe Goss

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> From: Elian Degen <degen@telcel.net.ve>
> To: pianotech@ptg.org
> Subject: RE: Yamaha out of tune (THE SOLUTION)
> Date: Wednesday, September 02, 1998 9:20 PM
> 
> Hello List
> 
> First of all, thank you very much for all the answers, everybody helped a
> little, and every answer is worth taken in consideration, if it is not
> usefull now it will be in a future.
> 
> I just came back from what I think is the solution to the problem.
> 
> First I am going to answer to some of your questions, Yesterday i was
mute,
> because I formated my hard disk to install Win98 full (not the upgrade)
> (Very satisfactory )
> 
> BopPiano@aol.com wrote on 08/29/98
> 
> >First, I would look for drafts  (is there an air conditioner or other
> situation causing fluctuation)
> 
> No air fluctuation, no air conditioning.
> 
>  >Next, are the plate bolts adequately tight ?
> 
> I checked them today, Yes
> 
> Avery wrote on 08/29/98
> 
> > the tightness of the plate screws.
> 
> Ok
> 
> >you might also take loose some strings to check the tightness of the
bridge
> pins.
> 
> I checked it today,  all ok
> 
> Newton wrote on 08/30/98
> 
> >What you are describing is behavior common to changes in humidity.
> 
> That is what had me puzzled, the area where the piano is, is a dry area
and
> the owners said that was always like this.
> 
> Joe Goss wrote on 08/30/98
> 
> Elian,
> >Just curious as to your method of tuning, Is it middle string then
outside,
> left to right. This could be a factor if >there is not enough room for
the
> strings to move without friction on their neighboring.
> >Joe Goss
> 
> I have several methods, I  tune auraly when I don´t have to change pitch
or
> piano is stable starting with a felt covering 2 central octaves I tune
them
> using fifth and fourth and check with thirds and 12th and folow to tune
> upurds to the trebble and finally centre to bass,
> 
> For this piano,  I used a Yamaha PT 100II tunning as you said the first
two
> tunnings, and tunning higher, and afterwards I tuned auraly about 8 more
> times, to the date, anyway it was not the tunning as I have several
Yamahas
> that hold even for more than a year with a satisfied customer.
> 
> BopPiano@aol.com wrote on 08/30/98
> 
> >This would be typical of climatic fluctuations especially if the bass
stays
> very close to where it was left.  If, >from string to string
> 
> After checking everything again today I really became convinced that
> something was happening there and nobody told me about, so at the end of
my
> inspection, I tuned the piano again, and I had my customer to come and
talk
> to me.
> 
> Roger Jolly wrote on 08/30/98
> 
> >It would be well worth while to take a hammer shank and lightly tap all
the
> strings to the bridges. I have never >seen bad coils on Yamaha's but this
is
> worth a visual check.
> 
> Tried it also today...   ok
> 
> Jon Page wrote 08/30/98
> 
> Elian,
> >1/2 beat ?  So what. In how long ?
> 
> A week apart
> 
>  >Maybe this piano needs a longer time period to settle since it  was
> neglected for so long a time. How many >tunings have you given it since
it
> was pulled up?  about  8  , 9 with today
> 
> I think I pretty much covered the questions, now, here is what I found.
> 
> Once my client arrived, I exposed him with all the facts, and I told him
> that the piano was in excellent shape, that there must be an outside
effect.
> 
> He thought about it and said he couldn´t make out what,
> 
> Then arrived the pianist, his daughter. I told her what I tried, and that
> everything showed that the piano was affected by climate or humidity, and
> GUESS WHAT.
> 
> The Daughter, has respiratory problems, and sometimes practices the piano
> with an electric vaporizer near by, which lets out lots of steam. 
Imagine
> jumps in hummidity from around 50% to 90% back and forth. And no one was
> aware of that, In fact if I don´t insist, the didn´t notice this fact.
> 
> At least, I hope that is the reason, I told them not to use the vaporizer
in
> the room, and I would go and check on the piano in two weeks time.
> 
> Elian Degen
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