Steingraeber factory pictures, bridge agraffes & adjustable vertical hitchpins

[Farrell]

Where do you get any sideways tension? As long as the backscale is roughly parallel with the speaking length, the bridge will not be tensioning or compressing the soundboard in any manner.

Terry Farrell
  ----- Original Message ----- 
  From: Kazuo Yoshizaki 

  This was what I heard from a piano tuner in Paris who asked Mr. Paulello about it. There may be something lost in translation, but I just assume anything that adds stress to the board inhibits the movement of the board. If you have no downbearing, no mass and no tension sideways, the board moves more freely, doesn't it? (Of course that is not realistic.)


  On 5/2/06, Ron Nossaman <rnossaman at cox.net> wrote:

    > Yes, the string bearing is reversed, but the concept behind is that you
    > don't have tension sideways on the bridge, which helps the soundboard
    > vibrate more freely.
    >
    > Yoshi


    And how does that work? In my world, the soundboard isn't
    changed by the string termination at the bridge, and will
    vibrate pretty much the same with either system. The real
    difference is in the mass on the bridge which, if anything, 
    will impede the vibrational freedom (amplitude, in this case)
    of the soundboard assembly by lowering it's resonant
    frequency, increasing it's mechanical impedance, and extending
    sustain.
    Ron N


-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20060503/5bd16407/attachment-0001.html