---------------------- multipart/alternative attachment On 29-jan-05, at 17:00, Keith Roberts wrote: > I echo your thoughts, David. It seems to not jive. I have an=20 > engineering backround so I have to model the situation and analize.=20 > Here are a few postulates FOR the theory. > For the hammer to create a louder tone, the hammer must have a higher=20= > velocity when it hits the string and therefore when it leaves the=20 > jack. In the static world the knuckle leaves the jack before the key=20= > hits the punching. Obviously the flex and delay (compression) in the=20= > system allows the key to contact the punching before the let off point=20= > on harder blows. The flex of each particular piano will have to be=20 > taken into account. In pianos with less flex the effect/difference=20 > will be less because the delay not being so great, let off will occur=20= > before deacceleration has a chance to affect to speed of the jack.=20 > With a softer punching, slow down of the key begins sooner and takes=20= > up more of the stroke. As the flex unwinds through the system a=20 > gradual and early slow down of the key will result in a decrease in=20 > velocity at let off. Just as with the teeter totter, as you take up=20 > the landing with your legs, you control the launch velocity of the=20 > kid. > =A0 > Andre works on a lot of large grands with big keys and lots of mass =3D=20= > more flex/delay. > =A0 > kpiano > Hi Keith, I am sorry, I do not agree at all. These little felt babies improve touch & tone on any instrument. As I tried to explain before, it has nothing to with mass. If you replace the original punching with this new Wurzen one, even a=20 very soft blow will be more clear. First try it out for yourself, then judge. It is that simple Andr=E9 Oorebeek Amsterdam The Netherlands Where 'music' is no harm can be ---------------------- multipart/alternative attachment A non-text attachment was scrubbed... Name: not available Type: text/enriched Size: 2018 bytes Desc: not available Url : https://www.moypiano.com/ptg/pianotech.php/attachments/46/4c/f2/fb/attachment.bin ---------------------- multipart/alternative attachment--
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