[CAUT] caut Digest, Vol 1110, Issue 48

[Paul T Williams]

Hi Richard,

I think the key-dip on a D should be more like .390". 

Try that.

Paul




"Richard Adkins" <RADKINS at coe.edu> 
Sent by: caut-bounces at ptg.org
05/22/2008 02:52 PM
Please respond to
College and University Technicians <caut at ptg.org>


To
<caut at ptg.org>
cc

Subject
Re: [CAUT] caut Digest, Vol 1110, Issue 48






I have a new bag of PU-12W Wurzen "Tapered" Front Rail Punchings I got 
from Piano Tech. I plan
to try them on a S&S D this summer. You can tell the correct orientation, 
as some thoughtful
person has put a nice black line on the side that goes bottom down. But it 
is easy to see on the
bench, which is which.
 
On this S&S D w/.400" key dip, the jack touches the felt in the jack (fly) 
window. I'll be checking the entire
action geometry. Perhaps it could use a shallower dip, but I don't want to 
compromise there if I don't have
to. This is a 1940 vintage. Perhaps key dip was shallower? 
 
String height:
 
Note 62 is post on at 7 5/8"
 
        36 is 7 3/4 (natural crown?)...I've seen the string height drop 
dramatically here in winter!
 
        1-20 are about 8" (from the middle of the string diameter)
 
These problems have been discussed this past year, giving me the urge to 
revisit this action
and try to improve it. I did raise up the rear of the stack some a few 
years ago, but maybe
not enough. The distance from the shank to rest felt was way, way to 
large.
 
Thanks to the kind souls on this list for publishing Mike Mohr's 
forefinishing notes.
Anyhow, I need to do some more head scratchin'....take a lot of 
measurements again.
 
I'm hoping the Wurzen felts will help too!
 
Richard Adkins
Coe College
-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/caut.php/attachments/20080522/35c140da/attachment-0001.html