S&S action question

[Horace Greeley]

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Phil,

At 01:19 PM 7/25/2005, you wrote:
>I have been asked to get this action to feel lighter. Right now it feels 
>like a Mack Truck. I have not measured DW yet, but it feels like mid 60's 
>to me.
>
>-there is only 15mil from knuckle to bushing. I measured it 3 different 
>times getting the same result.
>
>-Hammers, shanks, knuckles, and whippens have all been replaced, but I 
>think I'm fighting an uphill battle without replacing those shanks.
>
>Your thoughts?

Before getting too involved with changing things, take the time to make 
very careful measurements in re: action dimensions.  For example, check out 
the following:

 From the book, "Steinway Regulation" by F. R. Deitz

Point of hammer center        Model     S -B       C-D
from underside of string                     4.6 cm    4.9 cm

Point of rep. center                              11 cm  11.3 cm

Blow                                                    47 mm    47 mm

Dip                                                      9.5 mm   10 mm

underside of keytop
from keybed                                        63 mm     65 mm

You will want to look at the deck height (key bed to underside of string, 
nominally measured at the factory at note 62) which should be nominally 
7-1/2".  Everything works backwards from that measurement.  So, to the 
extent that it is too "proud" (it is usually too high, as against too low), 
you will need to refigure the measurements from Dietz.

Be sure to check the spread - spread pre 84 was  4.381" and post 84 was 4.395"

I think that you will find some good information on all of this published 
some time ago in the Journal by Chris Robinson.

Best.

Horace

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