[CAUT] Original SD-10 Key Height

[Ed Sutton]

I've see two Baldwins (SF and SD) in which the string height from keybed was 
too low. The instruments were built with standard bore hammers, and the 
action jimmied around to "work." This appeared to be factory adjustments.

I'd suggest beginning with the strike line height, then working down through 
the action. If strike line height minus hammer flange pin height do not 
equal the hammer bore distance, you have a problem to resolve. If that 
dimension is o.k., go ahead and make some sample notes work comfortably.

The locations of the strings and the keybed are the most difficult 
parameters to change! Might as well consider them "given."

Ed Sutton

----- Original Message ----- 
From: "Bob Hull" <hullfam5 at yahoo.com>
To: <caut at ptg.org>
Sent: Saturday, July 04, 2009 3:30 PM
Subject: Re: [CAUT] Original SD-10 Key Height



I have tried the 2 9/16 key height (about 69 - 70 millimeters) and it 
doesn't work.



----- Original Message ----
From: Bob Hull <hullfam5 at yahoo.com>
To: caut at ptg.org
Sent: Saturday, July 4, 2009 1:56:36 PM
Subject: [CAUT] Original SD-10 Key Height


Rebuilding the action of an SD 10 and it appears that someone has already 
been monkeying with this one. The balance rail pins are almost buried in the 
mortise. The key ht. on the old action is 2 3/4" to the underside of the 
keytop. Does someone know what the original specs were? The piano action 
handbook says 2 9/16" for Baldwin concert grand but I didn't know if the 
SD10 would be different than a generic older Baldwin concert grand.

Also, original specs for hammer blow and dip if you know. I'll make my 
adjustments from there.


Thanks.

Bob