Birdcage, more

[DGPEAKE@AOL.COM]

In a message dated 98-10-14 11:26:17 EDT, you write:

<< HI Phil:
 
 I've always looked at pitch raising as kinda' like cutting off a dog's
 tail inch at a time so it wont hurt so much.
 
 Actually, there is no reason to not raise the pitch all the way to 440
 on the first pass. If the structure is not strong enough to stand it, it
 will collapse by the time you get there anyway. Why not get the anxiety
 overwith in a hurry. After the first pull up, the pitch will drop back
 about 25% of the amount you pulled it up. If you use the full temperament
 strip method, it will drop about 33% because, but the time you come back
 to tune out the unisons, the middle strings will have settled about 10%.
 
 After the first pull up, the second pull can be overpulled by 25% of the
 amount it fell after the first pull up.  For extreme cases like the one
 you mentioned, it will take a 3rd tuning.  All of this can be done in
 one trip. Most of the settling happens almost immediately. I have done
 this procedure many times and come back a year later to find the piano
 right on pitch.
 
 Jim Coleman, Sr.
 
 Another way is to tune unisons of each note the same time you pull up the
middle string.  This way you do not have to compensate the 25% overpull.  

Dave Peake, RPT
Portland, OR