standard pitch in 1850?

[Erwinspiano@aol.com]

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In a message dated 12/27/2002 4:40:05 PM Pacific Standard Time, 
swiftspiano@hotmail.com writes:

> Subj: Re: standard pitch in 1850? 
>  Date: 12/27/2002 4:40:05 PM Pacific Standard Time
>  From: <A HREF="mailto:swiftspiano@hotmail.com">swiftspiano@hotmail.com</A>
>  Reply-to: <A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A>
>  To: <A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A>
>  Sent from the Internet 
>                 

                         Hi Ned

>                 Yes , I think to some degree that's possible within a range 
> to "reverse engineer" the scale. It would require knowing the speaking 
> length as well as wire size. and that assumnes the wirte sizes are 
> original. 

          From what little I've read on the pitch wars of the last half of 
the 1800s the word 
> standard pitch was not a reality. The 1878 Stwy Model B I rebuilt Had a 
> pitch of A-458 and other writings  (in our PTJ) and elsewhere varify that 
> this was a pitch experimented with. Tension will be your biggest clue. At 
> A-440 an average tension in many pianos will be in the 145 to 160 lbs. Some 
> have huge tension  lumps in the middle. Bu at least some idea of what was 
> intended can be observed.
>    Don't get to hung up on a perfect original pitch level. If you're 
> restringing the piano take the measurements and consult with Del. He has 
> probably the most experience in this dept. and has been helpful to me in 
> the past in this regard.

    Dale Erwin

> 
> 
> Hi all.
> 
> A point of curiosity here.  Shouldn't we be able to reverse engineer this 
> scale to determine what the proper pitch should be?  Normally I  wouldn't 
> reply and defer to my more versed associates.  But, no one replied so I ask 
> 
> the question.  It seems like some of the equations that John Travis 
> provides 
> could be modified to answer this question.  Perhaps I am over simplifying 
> the problem.  Just an question.
> 
> Ned Swift
> Lowell, MI
> 
> 


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