Bridge design

[Keith Roberts]

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Re: Bridge designMaybe gluing the bridge cap on in the crowned position =
and the bridge to the sound board in the crowned position, like Dale =
does, will add the necessary impedance to the treble end of the bridge. =
Most of the models discussed here on the list, didn't seem to deal with =
the  stiffness added by the glue joints in a laminated structure. =
Usually underestimated and throws that kink into the reality/theory gap =
along with a few of the other observartions Dale has made.
Actually, I 've been hearing Dale tune and voice while I work and if he =
says he can hear a difference in the two boards, I believe him.
Keith R
Associate PTG

Message -----=20
  From: Ron Overs=20
  To: pianotech@ptg.org=20
  Sent: Saturday, July 06, 2002 6:31 PM
  Subject: Re: Bridge design



  Interestingly, something I have noticed about transition bridges is =
that they also need an extension running out from their treble end, to =
increase the impedance.=20

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