I think that's probably why I don't overpull. I don't believe it. David I. ----- Original message ----------------------------------------> From: Farrell <mfarrel2@tampabay.rr.com> To: Pianotech <pianotech@ptg.org> Received: Wed, 1 Dec 2004 15:39:39 -0500 Subject: Re: Pitch Raising Techniques >Ed Foote wrote: >"Usually I don't see more than 15% of the strings as freebies, though." >Well Ed, I guess you and me are just using the wrong tools. If we used RCT, >we could "tune 99.99% of the time in one pass to A440" - apparently even >from a half-step flat. >How 'bout them cow pies? >Terry Farrell >> Duaine wrote: >> That even sounds more archaic O:-) >> I just let Cybertuner do the "thinking" (overpull calculation) and can >tune 99.99% of the time in one pass to > A440 :-) >> , Richard writes: >> >> << btw... my recent experiences in Japan has led me to conclude that the >> >> one hour wonder pitch raise and "fine tuning" is a suspect concept at >> >> best. :) >> >> >> Hmm, I dunno. There is no right or wrong way to fine tune a piano, at >> pitch, that is say 15 cents flat in places. There are, however, many of >us that >> have found ways that work, for us. Here's mine. >> If the piano is more than 4 cents off standard, and I have to meet >> broadcast quality,(which is mainly the unisons and octaves), I invest the >first 15 >> minutes,(12 if I really have to meet a deadline), in getting the piano >within 4 >> cents of 440. This is most easily done by using the standard SAT >calculator. >> HOwever, I take my readings from 7 notes or so, ABOVE where I am tuning. >> The reason for this is that seldom do I find a piano that is the same >> amount flat across the whole keyboard, and since the drop is due to >continually >> adding tension above, I want to stop overpulling so much before I get to >the >> section that is not so flat. >> There is a simple hammer technique that leaves string/pins very stable. >It >> is just not very accurate in placing the pitch. I pull the pin well sharp, >> enough so that I will be certainly moving the pin as I then drop it flat. >I go >> until the pitch is just a little flat, relax the hammer, and give a very >slight >> sharpening flex to the pin. These amounts depend on how tight the block >is, >> and how much friction there is in the upper bearing points. >> This technique is a little sloppy on pitch placement, but leaves a string >> that will not move under any blow that I hit it with. >> On the second pass, if by chance a string is exactly where it should >be, >> I simply wiggle the pin with the hammer to assure myself that it isn't >poised >> on the edge of balance, and if the note doesn't change, that is a freebie. >> I have had the SAT III leave a piano within 2 cents of 440 after a 15 >> minute, 20 cent pitch raise doing this, and after that, it is not >difficult to >> fine tune it in an hour. There are exceptions, of course, but I don't see >many >> problems getting the major work done in a flash, then taking whatever time >I >> like to fine tune. Usually I don't see more than 15% of the strings as >> freebies, though. >> Regards, >> >> Ed Foote RPT >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives
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