[CAUT] Upright geometry problem (Nordiska)

[Jim Busby]

Thanks David,

 

Although I had considered the springs it seemed moot if the specs are so
far out of whack. They are strong. I guess that would at least make it
"work" better. 

 

Is that what you ended up doing? It was sent with about 5/8" let off
which meant control and pp was pretty much random.

 

Thanks.

Jim Busby BYU

 

________________________________

From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of
David Brown
Sent: Thursday, October 11, 2007 1:39 PM
To: caut at ptg.org
Subject: [CAUT] Upright geometry problem (Nordiska)

 

Dar Jim-

We had a rash of this kind of thing with non Chinese loan pianos.

How are the damper springs? Are they excessively strong? Is it any
better with sustain engaged? By weakening the damper and  jack springs
and restoring  more normal regulating dimensions it seemed to cure it on
these.

Your mileage may vary.

David


David C. Brown 
Arizona State University
School of Music
Piano Technician
1-480-965-6760
david.c.brown.2 at asu.edu

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