I might be interested in overpull on the second pass but never on the first pass... David I. ----- Original message ----------------------------------------> From: Farrell <mfarrel2@tampabay.rr.com> To: Pianotech <pianotech@ptg.org> Received: Wed, 1 Dec 2004 19:36:40 -0500 Subject: Re: Pitch Raising Techniques >Richard wrote: >> Actually, you can usually get a 100 cent flat piano at 440 pitch within >> 3-4 passes and never go above 442 to do it. I suppose you can call that >> overpull, but thats not what folks normally mean when they use the term. >Agreed. I would call that about 8 cents overpull (or 8% for a half-step-flat >piano) in the mid-section of the piano! And actually, with that amount of >overpull, you might be about 18 cents flat in the middle of the piano after >the first pass, so maybe only a 5-cent overpull on a second pass would be >required to get up to 440! You shouldn't need the extra two passes (well, >maybe one more pass in the high treble if you are only going 8 cents sharp). >That's what overpull is - tuning a string a calculated amount sharp to >achieve a targeted pitch. That's what I call overpull. So what do folks >normally mean when they use the term? >I don't care if it's one or two cents overpull - if you are doing it to get >the piano to end up at a certain pitch, then those one or two cents are >overpull. >At least in my book. :-) >Terry Farrell >----- Original Message ----- >From: "Richard Brekne" <Richard.Brekne@grieg.uib.no> >To: "Pianotech" <pianotech@ptg.org> >Sent: Wednesday, December 01, 2004 4:26 PM >Subject: Re: Pitch Raising Techniques >> Farrell wrote: >> >> > If the piano was a half-step flat, after your first pass, it would be >> > about 25 cents flat (the high treble would likely be more like 40 >> > cents flat). After the second pass, it would be at least 5 cents flat >> > (again, with the high treble being maybe 10 to 20 cents flat). Then a >> > third pass in the tenor? And leave it? >> > >> > Something isn't right here. If you never overpull, you will never get >> > up to pitch! You'll get close, but only after quite a few passes - >> > especially in the high treble. Why would you not want to pull 'em a >> > bit sharp? >> >> Actually, you can usually get a 100 cent flat piano at 440 pitch within >> 3-4 passes and never go above 442 to do it. I suppose you can call that >> overpull, but thats not what folks normally mean when they use the term. >> >> That said... even sticking to 440 as a limit.... a couple passes more >> and it will stay there. Theory is one thing, reality is another. Take >> the elections for example..... grin... no I guess I dont want to go >> there after all. >> >> Cheers >> RicB >> >> _______________________________________________ >> pianotech list info: https://www.moypiano.com/resources/#archives >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives
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