plate reaction was Re: Pitch Raising to A440.......Or Not?

[Wimblees@AOL.COM]

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In a message dated 8/17/01 7:38:41 AM Central Daylight Time, 
nhunt@optonline.net writes:


> Hi Wim
> 
> This is indeed the case.
> 
> You can prove it to yourself easily enough.  The next time you plan to 
> restring
> a piano give it a fast unison tune and measure each note above the bass 
> break
> using your favorite flavor of ETD.  Remove the bass strings only then again
> measure each note and plot the differences.  Look at the graph and draw 
> your own
> conclusions.

I don't think this would show that the plate moved. I have done this, in a 
sense. I have removed the bass strings, and then listened to the treble. Yes, 
they were low closer to the break. But I would think that is because there is 
less tension on the board towards the back, where the bass bridge is. Not 
because the plate rose.  


> 
> Have you moved yet?
> 
>         Newton
> 
Yes. I drove down on Friday, and spent the better part of the evening 
unpacking and hooking things up. I will tune a bunch of pianos over the 
weekend so that on Monday I can take a couple of hous to take care of a lot 
of busy work before I "go to work." 

In September I will go back to St. Louis to get Jan and the house. 

Wim 



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