Plate Flexing

Erwinspiano@aol.com Erwinspiano@aol.com
Sat, 21 May 2005 10:44:19 EDT


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In a message dated 5/21/2005 2:24:03 A.M. Pacific Standard Time,  
mfarrel2@tampabay.rr.com writes:

considerable amount.  The dowels are all cut pretty evenly around  the
> perimeter.  The plate just warped.  My understanding is  that during
> certain periods at Steinway, plate warping was more of a  problem that at
> others.


  David
  I'm  Not convinced the plate is  warped.
 But the the dowells were arranged short to pull the  plate down 
significantly. The question is why.
  With the plate installed over a new board but with out  dowells, imaginne 
the plate screwed to the block & the very last plate boss  sitting on the board 
in the tail. This is  the only places that are  touching so there's kind of a 
triangulation in this scenario that I find common.  Even with  the usual very 
short dowell at this location I rarely  find  the others this short until it 
comes to the treble.  I think  they simply wanted the plate to sit at a very 
low & constant elevation  instead of allowing  the bridge thickness to rise & 
fall to match the  plate. SO they pulled it down
  Dale

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