[pianotech] Was high and outside now silent pitch lowering

[Carl]

I've been reading many, not all, of these (high and outside) posts for a 
couple of weeks now, and only
one fellow brought up the possibility of broken strings on pitch raises. I 
've had many pitch raise
needs and always  worry about the possibility of breakeage.  I'm aware that 
a piano 10 or 15 years
old can be raised without much worry, but many are considerably older, and 
look and feel like all
the strings might break with an even 10 cent raise.  That's likely an 
exageration, but all you need is
one string to break, and this adds considerable time to a tuning, plus other 
factors , such as cost
for the extra work .  ????????

CT  - Winnipeg.


----- Original Message ----- 
From: "Cy Shuster" <cy at shusterpiano.com>
To: <pianotech at ptg.org>
Sent: Monday, October 29, 2012 11:44 PM
Subject: Re: [pianotech] Was high and outside now silent pitch lowering


Good question! Answer is rarely.

TuneLab has a safety limit for maximum overpull percentages. You tell it 
where the treble bridge starts, and you get one limit for the bass, another 
for the treble (slight differences between old Windows and new iOS/Android 
versions). I limit the bass to 10%, and treble to 25%.

--Cy-- 

Cy Shuster, RPT
Albuquerque, NM

www.shusterpiano.com
www.facebook.com/shusterpiano

On Oct 29, 2012, at 10:08 AM, richarducci at comcast.net wrote:

> Cy,
> How often do you break strings on these pitch raises?
>
> Rick Ucci
> Uccipiano.com
> 609-677-0444
>
> On Oct 28, 2012, at 10:48 PM, Cy Shuster <cy at shusterpiano.com> wrote:
>
>> I use TuneLab for pitch lowering or raising. I make a pass without mutes 
>> (since the display shows all the strings), and it calculates the overpull 
>> for each note.
>>
>> I just did an 80-cent raise on a 5'3" grand, and the first pass brought 
>> everything to within five cents of target! Took me 17 minutes. Generally 
>> the bass sections take very little adjustment; the longest plain wire the 
>> most; and the top section varies a lot. Twisting every pin the same 
>> amount may be fast, but it's not accurate.
>>
>> After the first pass, which identifies any action problems, I pull the 
>> action, clean, lubricate, adjust, etc., then do my final, careful pass.
>>
>> --Cy--
>>
>> Cy Shuster, RPT
>> Albuquerque, NM
>>
>> www.shusterpiano.com
>> www.facebook.com/shusterpiano
>>