[CAUT] Bore distances for Steinway L

Paul T Williams pwilliams4 at unlnotes.unl.edu
Thu May 27 09:25:27 MDT 2010


I turned the drop screws down already....lots of drop. The action is 
properly bedded. 5-1/8 for center pin to molding.



From:
Keith Roberts <keithspiano at gmail.com>
To:
caut at ptg.org
Date:
05/27/2010 10:09 AM
Subject:
Re: [CAUT] Bore distances for Steinway L



You don't have any drop. screw the drop srew down one full turn. 
 
Raise the glide bolts. The ends of frontrail should float so they are 
pressured down slightly by the cheek blocks. That should give enough dip 
to set the whip adjustments.
 
2 1/8 is the stock measurement on a S&S bass. 5 1/8 fro the center pin to 
the center of hammer molding. David has the right way to determine bore.

On Thu, May 27, 2010 at 7:54 AM, Paul T Williams <
pwilliams4 at unlnotes.unl.edu> wrote:
Hi all, 

It's been years since I bored my own hammers and need a number.  What is a 
proper bore distance for a Steinway L (1924).  I installed some Abel 
Naturals last fall and the project went on hold while the piano got a new 
board and bridges. I just measured A-0 and it's 2-1/8".   I'm trying to 
regulated the action and am having a tough time for some reason.   

The key level and dip is factory perfect, I've got the proper blow 
distance of 1.75". I can't get let off any closer than 1/4"!! The rebuild 
was done right and the plate is the same height as before.  I've even 
tried to raise the blow a bit, and still can't get it to let off 
correctly. The frame is perfectly bedded.  The wips are old, but in pretty 
good shape.  I started at A-0 and only tried 5-6 notes before writing 
yall. 

I'm wondering what's going on.  Any thoughts of what to check next? 

Paul


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