hammer velocity

Delwin D. Fandrich pianobuilders@olynet.com
Mon, 28 Apr 2003 23:30:49 -0700


----- Original Message -----
From: <A440A@aol.com>
To: <pianotech@ptg.org>
Sent: Monday, April 28, 2003 7:34 PM
Subject: Re: hammer velocity


> Greetings,
>    After studying Askenfelt's measurements,  I understood that in forte
> playing the key bottomed out before hammer/string contact was made, but I
> didn't see it as happening before hammer movement. perhaps I have misread
his
> graphing.  Does it really show that keybottom is reached before hammer
> movement?  I am taking hammer movement to occur with jack motion .


I have no idea what Askenfelt's measurements show. I was refering to my own
as published in my Jounal articles of a few years back.

These numbers will vary depending on the key section and length and on
hammer mass.

Del


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