New Topic: Bass Cantilever Bridges

[Calin Tantareanu]

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Hi Michael!

I think the idea is simply to allow the low end of the bass bridge to =
contact the soundboard in a more flexible place, where there is a chance =
for the board to produce and audible fundamental pitch for those low =
notes.
You've probably noticed that usually the cantilever is greater in the =
low part of the bass bridge. Cantilevers are said to have the drawback =
of absorbing energy through bending and can also deform the soundboard =
if the downbearing force is too great.
But there are ways of getting a flexible low bass soundboard area =
without cantilevers. I can think of 3 solutions:
1. place the bridge further inside (yes, you will loose a few cm =
speaking length);
2. undercut the bridge at the end for a few cm (this can be seen in the =
old Bechstein model V grands - you probably have many of them in =
Britain);
3. Use a floating soundboard - which I think is the most useful =
approach. It was used by many French piano makers, especially Pleyel. =
Ron Overs has a really interesting article on his about a Yamaha grand =
where he floated the bass area of the soundboard.



 Calin Tantareanu
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 http://calintantareanu.tripod.com
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  ----- Original Message -----=20
  From: Michael Gamble=20
  To: pianotech=20
  Sent: Saturday, March 06, 2004 5:24 PM
  Subject: New Topic: Bass Cantilever Bridges


  Hello List & Ron Overs.=20
  There seems to be room for a discussion on the topic of Bass =
Cantilever Bridges. Can anyone offer any discourse on the subject? The =
"why's" and the "wherefore's"? I also wonder if further amplification of =
the insertion of a block under the cantilever to give it a more direct =
contact with the sound-board really works? If so... why do S&S (and =
other really reputable makers) use cantilevered Bass bridges? Over to =
you..
  On a sunny Saturday afternoon in the Sussex Downs
  Michael G (UK)=20

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