Hello Jim, thank you for taking the time to write back! I am pretty sure my SATIII is calibrate correctly. It starts up properly, is new and has not been messed with. I will be going out to my shop tonight and following your instructions to adjust my fork. I will let you know what happens. thought I'd down load a few dry fly patterns while I am on line first *grin* Thank you, Terry Jack Eugene, OR Chapter ----- Original Message ----- From: Jim Coleman, Sr. <pianotoo@imap2.asu.edu> To: Terry L Jack <tjack@pacinfo.com> Cc: <pianotech@ptg.org> Sent: Wednesday, October 27, 1999 5:04 PM Subject: Re: A= 440 Fork - advice please > Hi Terry: > > Assuming your SAT 3 is in calibration (it should be unless someone has > messed with it. It's easy to correct) you have a lot of filing to do on > the ends of the times. I like to lay a file down on the workbench and > drag the ends of both tines on the file. I rotate the fork after every > two strokes. If the fork builds up heat (and it will) you can test this > by placing the fork on the side of your face. It is stabilized when it > feels neither hot nor cold to your face. When it gets to about -1.0 cents, > go a little slower to let it have time to normalize in temperature. > > Another problem some people have is being able to judge the beat rate > produced by F2 and the fork. It sometimes helps to raise the F2 a little > to slow down the beats rate so that you can actually count the beats in > groups of 4. Tap your foot once for every 4 wavers you hear using the > fork. Then with your foot continuing at the same rhythm, play the fork > and the note A49. Tune to achieve the same rhythm. Of course it is simpler > to first tune the A49 in unison with the fork the best you can, being > sure to sock the key hard to help stabilize the strings. The F2 test is > used primarily to tell if you are high or low so you will know in which > direction to aim in your correction. > > Tuning to a fork can be confusing. You must discipline your mind to > concentrate on listening to the fundamental and not the 2nd partials. > A tuning fork does not have a 2nd partial, but when it is placed upon an > object to amplify its sound, the object may breakdown into other partials. > Besides this, your ear and your brain can manufacture partials for the fork. > These are called subjective tones. > This is why it is so important to use the F2 test so that you can > concentrate upon the 5th partial of F2 and the fundamental of the fork or > the A49 note. > > Jim Coleman, Sr. > > On Wed, 27 Oct 1999, Terry L Jack wrote: > > > Much simpler to tune your fork to the SAT II at body temperature. > > > > > When you take your test, hold your fork under your armpit to keep it > > > in tune when you need to use it critically. > > > > > > I am a student of Randy Potter and have been working on tuning temperments. > > I have been having trouble proving my A-49 with a 17th test so have been > > using my SAT III. I want to be good at aural tuning and do not want to get > > to where I can only tune with a machine. > > > > Reading this thread about tuning forks I decided to check mine, making sure > > to warm it up under my arm pit first. The fork I have is a John Walker. > > The reading I got on my SAT III after numerous tests is -3.6 !! I know I > > am a newby and suspect I must be doing something wrong, however this is such > > a simple measument I wonder. > > > > Any advice? > > > > Terry Jack > > Eugene, Oregon Chapter > > > > >
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