Hi David, Well stated. Your original post seemed a bit timid: "A very conscious rotary motion with even a slight forward press" which kind of sounded like you didn't really mean it about the forward press. I was just trying to say "right on! press that hammer down with no apologies!" I agree with you 100%. Including about the worst scenario (though an extra loose block with lots of friction runs a close second). Fred On Oct 18, 2009, at 4:31 PM, David Love wrote: > The basic idea is that you manipulate the pin with counter pressure > to the natural tendency for the pin to twist so that the change in > pitch only reflects actual movement of the pin in the block. At > least that’s what I meant in the original post. With the hammer at > 12:00 you can press slightly downward which will move the pin > toward the string as you are turning the pin and it is twisting > before it actually moves in the block. With practice you can learn > to feel the amount of downward pressure needed to negate the pitch > change associated with the twisting of the pin. When you release > the downward pressure and also allow the pin to relax with some > practice those two forces will remain net neutral. This allows you > to creep up to the target pitch rather than have to pull it a bit > sharp and set it downward as this is particularly difficult with > high friction in the string bearing segments. The best way to learn > this is with an ETD where you can actually see what’s happening > while you feel the pin. The amount of pressure needed to compensate > for twisting will change depending on how tight the block is. The > worst possible scenario is severe friction through the string > segments combined with an overly tight block. Usually, Bechstein > pianos (at least older ones) don’t suffer from overly tight blocks > and the ones that are open faced minimize the flagpolling effect > because of the close proximity of the hammer pin contact to the > block itself. > > David Love > www.davidlovepianos.com > > From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf > Of Fred Sturm > Sent: Sunday, October 18, 2009 9:45 AM > To: caut at ptg.org > Subject: Re: [CAUT] Bechstein model B tuning stability > > On Oct 17, 2009, at 3:53 PM, Jeannie Grassi wrote: > > > Hi Fred, and anyone else, > Can you take your description of downward and upward motion a step > further? I’ve been hearing conflicting descriptions of this > recently in private communications. What I’m asking is > specifically….when the pitch needs to go up, do you lift up on the > end of the tuning lever at the same time there is a slight rotation > to sharpen? And conversely, does one push down and rotate slightly > flat? I’ve had the opposite described and just want to get a sense > of how most people interpret this deliberate flag-poling motion. > I’ve always used it the way I’ve described. Have I been climbing up > the wrong flagpole all these years???? :>) > jeannie > > > Regards, Fred Sturm University of New Mexico fssturm at unm.edu -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/caut.php/attachments/20091018/a1f12a72/attachment-0001.htm>
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