[CAUT] caut Digest, Vol 1110, Issue 48

[Jim Busby]

Paul,

I got the new S&S manual and it says .400. It also said something that surprised me, although I kind of though this all along;

"It should be noted that the key dip may vary within the suggested range of .390 to .420 inches for any Steinway grand piano..."

Cheers,
Jim

________________________________
From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Paul T Williams
Sent: Thursday, May 22, 2008 2:00 PM
To: College and University Technicians
Subject: Re: [CAUT] caut Digest, Vol 1110, Issue 48


Hi Richard,

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

Try that.

Paul


"Richard Adkins" <RADKINS at coe.edu>
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05/22/2008 02:52 PM
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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
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