[pianotech] Was high and outside now silent pitch lowering

[Terry Farrell]

> I've never attempted a blind overpull,


CHICKEN!!!!!!!!  Boy, not me though. I've done it a couple of times - VERY fast and VERY easy.

And then I spent a half-hour pulling in strings that ended up 50 cents off this way and that, etc., etc.  My attempts were disastrous. But hey, I tried it!  I just don't see how it would be possible to do a blind pitch raise and get everything within a couple cents - or even all within an average of a couple cents.  But then, there are lots of things I find difficult to do - very often just because I am not skilled at it. I dunno - maybe with practice. But even with practice, it just doesn't seem likely to come close enough. I'd really like to watch someone do a "good enough" 60-cent pitch raise blindly and have the piano ready for a good one-pass tuning (i.e. have the piano within a few cents of target for tuning pass). It would be very interesting.

Terry Farrell

On Oct 31, 2012, at 11:11 AM, paul bruesch wrote:

> Thanks Joe,
> 
> I do "do the math", or at least very rough math, to compensate for the restrictions imposed by only having 25% or 34% options. I thought Terry's statement that he uses the Sanderson method meant that he was using a SAT and that maybe his SAT was capable of calculating different percentages than my SAT3... he's since clarified that. (Thanks, Terry!)
> 
> I've never attempted a blind overpull, and don't plan to any time in the foreseeable future. Even after (only) 8 years at this I don't feel comfortable enough to try it.
> 
> Paul Bruesch
> Stillwater, MN
> 
> 
> On Tue, Oct 30, 2012 at 3:13 PM, Joe Goss <imatunr at srvinet.com> wrote:
> hi     Paul,
> if you do the math you can make the sat do any thing. on most pianos I measure a2 if it is say 40 cents flat I change it to 20 and enter.
>  tune the bass. measure the first tenor note. if it is a spinet I deduct 5 percent from the reading and enter. large pianos 25 percent.  recheck at
> Bb 4 or C 5 depending on how many notes are left before the break 25 percent re check at break and f6 c7 each time using 25 percent
> I do check along the way and like to have the newly tunes note sharp of the octave and sort of in the ball park with the 4th and 5th..
> around f6 I tune and leave the first and second string about 3 to 5 cts sharp and zero in the 3rd string. Check with ear and re tune if needed.
> The process takes me about 45 minutes with the piano ready to tune 15 to 30 minutes or 1:30 Min
> the above is done using heavy test blows.
>  
> Never have been successful with the blind over pull,it always results in me re tuning a squirrely piano several times to get it stable.
> The above tuning is done with heavy test blows
> 
> Joe
> 

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