Pitch Raising Techniques

[David Ilvedson]

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I don't find the pitch dropping much.   I pull in unisons as I=
 go.  100 cents up does not come out to 25 cents flat in my=
 experience.   More than anything, I don't like to bring the=
 tension to higher than pitch....phobia?   probably.  

David I.

----- Original message ---------------------------------------->
From: Farrell <mfarrel2@tampabay.rr.com>
To: Pianotech <pianotech@ptg.org>
Received: Wed, 1 Dec 2004 15:46:50 -0500
Subject: Re: Pitch Raising Techniques

If the piano was a half-step flat, after your first pass, it=
 would be about 25 cents flat (the high treble would likely be=
 more like 40 cents flat). After the second pass, it would be at=
 least 5 cents flat (again, with the high treble being maybe 10=
 to 20 cents flat). Then a third pass in the tenor? And leave=
 it?
 
Something isn't right here. If you never overpull, you will never=
 get up to pitch! You'll get close, but only after quite a few=
 passes - especially in the high treble. Why would you not want=
 to pull 'em a bit sharp?
 
Terry Farrell
----- Original Message ----- 
From: David Ilvedson 
To: pianotech@ptg.org 
Sent: Wednesday, December 01, 2004 11:56 AM
Subject: Re: Pitch Raising Techniques


Speaking of archaic, I typically don't overpull at all.   1/2=
 step flat?   Up to pitch.  2nd pass up to pitch and 3rd pass in=
 the tenor and leave where it lies.
 
David I.
 
----- Original message ---------------------------------------->
From: Joe Garrett <joegarrett@earthlink.net>
To: pianotech <pianotech@ptg.org>
Received: Wed, 1 Dec 2004 07:48:11 -0800
Subject: Re: Pitch Raising Techniques

David Love said: "15% overpull in the bass, 25% in the midrange,=
 32% in the upper range.
On small spinets, reduce the numbers by 5% each.   Do unisons as=
 you go."

 
David,
I must take exception to this technique! Although, it will work=
 most of the time on most Olde Uprights and Grands, there is=
 always the exception. This technique is archaic, to say the=
 least. There are better ways. The 32% in the upper treble will=
 most likely get someone in a world of hurt! Most strings, in=
 that area, are already at/above 50% of their breaking=
 strength!!! You raise it another 32% and strings will break,=
 IMO. I've done some studying on the subject and wrote an article=
 for the PTJ, in Dec. 1999.
Regards,
Joe Garrett, R.P.T.
Captain, Tool Police
Squares R I


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