[CAUT] Wire Stretch

[Fred Sturm]

On Apr 30, 2007, at 2:32 PM, Jeff Tanner wrote:

> The idea was brought forth by Fred and Ron that the pitch drop that  
> happens after new wire is installed has little to do with wire  
> elongation or stretching, but due almost completely to wire bending  
> to conform to bearing points and the crushing of the bridge cap.   
> (My paraphrased understanding after having read it several times)

Hi Jeff,
	My intent, and I think Ron's, was that conforming to bearing points  
and wood crushing was possibly/likely the cause of much of that  
first, rapid pitch drop (after chip). I think elongation happens more  
over time, unless one does something to speed it along (like tune 100  
cents sharp, or vigorously work the string). And even then,  
additional elongation will continue to take place to some extent. I  
certainly didn't intend to imply that elongation doesn't happen.
	Like just about everything to do with pianos, there are a lot of  
factors involved, always. Focusing on one and ignoring others is a  
very common trap. And, of course, when writing about something we  
tend to focus on just that one thing. We _could_ always add a  
disclaimer "It's more complicated than that, actually" to everything  
we say or write <G>.

Regards,
Fred Sturm
University of New Mexico
fssturm at unm.edu





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