post pitch-raise creep?

[Avery]

Well, I admit I've always been a little mathematically "challenged". :-[

Avery Todd

At 05:01 PM 7/8/2006, you wrote:
>Well gosh, 40% overpull on a 25-cent pitch raise is only ten cents! 
>Geeeesssshhhhh!   ;-)
>
>Terry Farrell
>----- Original Message -----
>
>In all my years of doing this, I've never run into a piano where the 
>monochords needed that much of an overpull! I, too, would be afraid 
>to do that! IMO, it isn't necessary.
>
>I don't even use the PR function on the SAT for the bass strings. I 
>start with #1 and just pull them a little sharp and go! They usually 
>come out pretty close.
>
>Avery Todd
>University of Houston
>
>At 09:46 AM 7/8/2006, you wrote:
>>I've been chicken to try that big an overpull percent on the 
>>monochords, for fear of breaking them.
>>
>>In the TuneLab Pro documentation, Robert Scott recommends 12% for 
>>the bass bridge and 30% elsewhere, for small to moderate pitch 
>>raises.  For better results (tuning unisons as you go, bass to treble):
>>
>>        bass bridge            12%
>>        tenor bridge to G5   29%
>>        G5 to G6                29% increasing to 37%
>>        G6 to C8                37% decreasing to 14%  (tension 
>> gets high up there)
>>
>>TuneLab's ability to measure each string and calculate a precise, 
>>individual overpull percentage in realtime is one of its best 
>>features, I think.
>>
>>--Cy--
>>shusterpiano.com
>>
>>----- Original Message ----- From: "Farrell" <mfarrel2 at tampabay.rr.com>
>>To: "Pianotech List" <pianotech at ptg.org>
>>Sent: Saturday, July 08, 2006 3:38 AM
>>Subject: Re: post pitch-raise creep?
>>
>>
>>>I use a VT also Andrew, and I find that the upper end of your 
>>>percent ranges work for me in the tenor and treble. However, I 
>>>find that the bicord bass needs closer to 25% and for whatever 
>>>reason - I certainly don't understand it - the monocord bass needs 
>>>about 40%. I know, I've never heard of anyone using that much 
>>>overpull in the low bass, but for whatever reason, if I don't, 
>>>it'll come out flat. Strange.
>>>
>>>Terry Farrell
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