Buzz From Bridge

[jolly roger]

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Hi Z!,
          The bridge is secured with dowels that go through the ribs, 
board, and bridge.  Each rib has a dowel if you look closely.  The bridge 
of coarse, is glued through out the length.
    Check the bearing through out the problem area, and the crown.  Use an 
artist pallet knife to probe the rib security, ( .010" thick). Also check 
the glue joint around the perimeter of the board, not forgetting the belly 
rail from inside the action cavity.
  I have found a few buzzes, by pressing down on the board, (with a blunt 
screw driver) along the belly joint.  In the high treble the joint is only 
about 3/8" deep at the belly rail.
Search for any items like paper clips, that may have been dropped under the 
plate.These type of buzzes are often hair pullers.
Good luck and have fun.
Roger

At 11:02 AM 8/1/02 -0400, you wrote:
>Greetings, Everyone!
>
>How are the bridges attached to the soundboard in a Steinway?  Glue and 
>dowels?  Are there any screws carefully hidden from view?
>
>The patient:  A Steinway B, about 30 years old.
>The problem:  A buzz -- that nasty wood-on-wood sound similar to the 
>loose-rib sound
>Found so far:  Light pressure on the bridge over the affected area will 
>make it go away.  The affected area is near the treble break, right about 
>where the strings to note G6 cross the bridge.  The buzz is activated by 
>notes C4 (middle C) and to some degree C3.
>
>(Or am I dealing with a loose rib or a failed glue joint between the rib 
>and the board?  I didn't see any cracks in any glue joints around the ribs.)
>
>Is there a suitable in-home repair?  My temptation is to install some 
>strategically placed screws, but I'm hoping that others on this list have 
>better ideas.
>
>Thanks in advance --
>Z! Reinhardt  RPT
>Ann Arbor  MI
><mailto:diskladame@provide.net>diskladame@provide.net


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