[CAUT] Bore distances for Steinway L

[Paul T Williams]

I'm trying a few things combined and am getting some results.  I decreased 
the blow a bit, increased the dip a bit.

How much is too much of either?  I can't raise the bass hammers any 
farther or I won't be able to get the action in or out. I think getting 
the dip to .410 is my best effect.  I've done 10mm for years and it has 
always worked, hence my frustrations. 

I'm also curious on how raising the stack would help.

Keep 'em coming!

Thanks
Paul




From:
Paul T Williams <pwilliams4 at unlnotes.unl.edu>
To:
caut at ptg.org
Date:
05/27/2010 10:22 AM
Subject:
Re: [CAUT] Bore distances for Steinway L



The buttons are original and plenty of room both up and down compared to 
the rail. I'm pretty sure I matched the new flanges/shanks to the old ones 
(too late to check that now, but I almost always do)  The key dip is 10mm. 
 The string heights are as follows 

A-0 19.7 
A#-2  19.7mm 
B-2  19.1 
D-5  19.3 
D#-5  19 
G-6  18.8 
G#-6  18.8 
C8  18.8 
Paul 





From: 
"David Love" <davidlovepianos at comcast.net> 
To: 
<caut at ptg.org> 
Date: 
05/27/2010 10:05 AM 
Subject: 
Re: [CAUT] Bore distances for Steinway L




The proper bore distance is the one you determine by measuring the 
distance between the flange center pin height and the string height in 
each section.   Check that first. 
  
Are you unable to get the let off closer because the let off buttons are 
bottoming out against the rail?  If so then maybe you have the wrong 
buttons on there.  Did you change the shanks and flanges to a new 
dimension? If so, did you change the dip to accommodate that?  What is the 
current key dip? 
  
David Love 
www.davidlovepianos.com 
  
From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Paul 
T Williams
Sent: Thursday, May 27, 2010 7:55 AM
To: CAUTlist
Subject: [CAUT] Bore distances for Steinway L 
  
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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