Resilience and energy transfer, was Acetone

[Delwin D Fandrich]

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  -----Original Message-----
  From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]On
Behalf Of Michael Spalding
  Sent: April 23, 2004 3:57 AM
  To: oleg-i@noos.fr, Pianotech
  Subject: RE: Resilience and energy transfer, was Acetone


  Isaac,

   .... Heavy hammers transfer more energy to strings than light hammers.

  Mike

This is broad generalization that is true only if the velocity of the two
hammers stays the same, or at least approximately the same, for a given key
strike. They do not. When a relatively light hammer is replaced with a
heavier hammer and the key is struck with a given amount of force the
velocity of the heavier hammer will be less. How much less is a function of
the specific action compliance and transfer efficiency.

Del

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