[pianotech] Was high and outside now silent pitch lowering

[John Formsma]

I have tried it...with poor results each time.

A pitch raise usually takes me only 15-20 minutes, so it's not like I'm
saving much time. And I've given away huge amounts of accuracy with the
"blind" method.

-- 
John Formsma, RPT
Blue Mountain, MS


On Wed, Oct 31, 2012 at 10:20 AM, Terry Farrell <mfarrel2 at tampabay.rr.com>wrote:

> 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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