---------------------- multipart/alternative attachment > > Hi Blaine. > > Thank you so much for taking the time to compose this very informative=20= > and helpful email. > The directions you have provided are invaluable! > > I'll let you and the other good folks on the list know how it comes=20 > out. > > Very best regards, > > Aart > > Aart in America Piano Services > Hoboken, N.J. 07030 > 201 406 2594 > aartinamerica@optonline.net > > On Feb 16, 2006, at 9:01 AM, Blaine Vesely wrote: > >> Aart, >> I get pianotech in digest form and have minimal time to read=20 >> everything, but your post prompted this email.=A0 Don't even worry=20 >> about taking inharmonicity measurements with a SAT2 since the machine=20= >> does not go below 2.0 I think.=A0 A harpsichord modelled after an old=20= >> Baroque French Double (sounds like this is the kind you will be=20 >> working on) will not have much inharmonicity.=A0 Just use the 4th=20 >> octave settings on your SAT to tune from B4 to the bottom of the=20 >> harpsichord.=A0 A4 will be more toward the treble than the bass side = of=20 >> the keyboard assuming a compass of F to F.=A0 Probably the second A=20= >> from the top of the range on the keyboard.=A0 When you tune the C5 to=20= >> top of the keyboard, you may have to insert some stretch alittle, but=20= >> not much.=A0 You can use the individual settings and tune the notes=20= >> directly, like set machine to D5 and tune D5, D#5 and tune D#5.=A0 = This=20 >> gets you in the ballpark pretty much.=A0 Then use your ear to test if=20= >> some stretch is needed.=A0 On a French Double, you will have two 8=20 >> foots and a 4 foot.=A0 I usually tune the top manual.=A0 It will only=20= >> operate one set of 8 foot strings.=A0 You must make sure the top=20 >> keyboard is coupled.=A0 Slide the whole keyboard front or back and it=20= >> will couple the keyboard to the jacks.=A0 When you get the top manual=20= >> tuned, then play the bottom manual.=A0 Make sure you only have the=20 >> second set of 8 foot strings coupled, and not the 4 foot.=A0 Tune=20 >> unisons using the bottom keyboard.=A0 Usually the 8 foot strings are=20= >> the tuning pins closest to the player.=A0=A0 Then turn off the 8 foot=20= >> (lever that moves the jacks) and turn on the 4 foot and tune.=A0 The=20= >> top 4 foot strings are hard sometimes to hear and you may have to=20 >> uncouple the top manual and tune octaves with just the 4 foot,=20 >> usually it is only the last several strings because they are so quiet=20= >> and high pitched.=A0 >> >> Concerning tuning pins, if you have to replace a string, you really=20= >> have to back out the tuning pin all the way if it has tapered tuning=20= >> pins.=A0 If it has what look like miniature tuning pins that are=20 >> straight, then put coils on a dummy pin and then copy what the other=20= >> strings look like.=A0 I have not done any stringing with pins that = have=20 >> no becket, to if that is the case, you will just have to practice and=20= >> when you get comfortable with it, go back to the customer.=A0 The = pins=20 >> generally for harpsichords that are of a traditional nature are=20 >> designed to get tighter when tapped in and thus tapered.=A0 So take = the=20 >> pin out, put the string in (you might want to take the jacks out) and=20= >> cut it maybe 8 inches longer than the tuning pin.=A0 Copy the way the=20= >> string is on the pin and it helps to maintain adequate tension when=20= >> coiling the string on the pin, and drive the pin in the hole.=A0 I = have=20 >> also been told that when you bring the string up to tension that you=20= >> should leave it a little bit under pitch, maybe 50 - 100 cents for a=20= >> few minutes.=A0 Someone told me that it does something to the = molecules=20 >> in the iron strings and makes it stronger.=A0 Then bring it up to = full=20 >> tension.=A0 Oh yes, the low inharmonicity and lower pitch when=20 >> stringing thing I just talked about applies to instruments with red,=20= >> yellow brass and iron strings.=A0 If you know that the instrument has=20= >> steel strings or has strings that are wound, then there is probably=20= >> more inharmonicity and will need some stretch eventually in tuning.=A0=20= >> One way to tell iron from steel is that when you bend or kink iron,=20= >> it will be easier to bend and will give you a definite kink.=A0 Steel=20= >> is harder to put a kink in it. >> >> Some fast thoughts, have fun with it. >> >> Blaine Vesely, Piano Technician >> Kent State University >> School of Music >> Kent, Ohio 44242 >> office: 330-672-2898 >> fax: 330-672-7837 >> email: bvesely@kent.edu > ---------------------- multipart/alternative attachment A non-text attachment was scrubbed... Name: not available Type: text/enriched Size: 4286 bytes Desc: not available Url : https://www.moypiano.com/ptg/pianotech.php/attachments/eb/de/b6/d9/attachment.bin ---------------------- multipart/alternative attachment--
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