Bridge Doglegs, was: Spreadsheet info / Jason Kanter

[Frank Emerson]

Stéphane, et al

(I apologize for messing up your name on my last post.  I have Chinese translation software on my computer, and I sometimes get unexpected characters when I use unusual characters in my text.)

I made reference to separate treble bridges in my response to Terry's post.  It was tongue-in-cheek, but it is a logical thought to consider having separate bridges.  In my experience, I have seem some weakness in tone and sustain in cases where the treble bridge is cut too deeply for plate bar clearance.  My guess is that this problem would be much worse if the treble bridge actually separated into two bridges.  It also introduces end-of-bridge problems that would not otherwise exist.  Part of the thinking behind vertically laminated bridges is to provide continuity of grain along the entire length of the bridge, and thereby more effect transfer and dissemination of the strings energy to the soundboard.  Separating the bridge would interrupt this effect.


Frank Emerson
pianoguru at earthlink.net


----- Original Message ----- 
From: Stéphane Collin 
To: Pianotech List
Sent: 12/19/2006 11:28:22 AM 
Subject: Re: Bridge Doglegs, was: Spreadsheet info / Jason Kanter


Hi all doglegs busters.

I had a brilliant idea concerning bridge doglegs.
Why not fitting two bridges in the place of the one long bridge, so it is easy to locate those in order to avoid the string length problem at the strut ?  What would be the drawback ?
I suppose that if this was not a stupid idea, manufacturers would have done this.  But I'd like to understand why not.

Best regards.

Stéphane Collin.
----- Original Message ----- 
From: Erwinspiano at aol.com 
To: pianotech at ptg.org 
Sent: Tuesday, December 19, 2006 2:40 PM
Subject: Re: Bridge Doglegs, was: Spreadsheet info / Jason Kanter


  Terry
  Probably just cost more.  Bottom line thinking you know.
  Dale
To what advantage is minimizing the bridge dogleg? If the bridge needs a 30 
mm offset to maintain target speaking length progression, then why not just 
build the bridge with a 30 mm offset? What's the problem?

Terry Farrell
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