[CAUT] NY hammers

Dale Erwin erwinspiano at aol.com
Wed Feb 16 18:21:43 MST 2011



 






Bob
  Excellent point.  These performance pianos are like thoroughbred race horses that require constant grooming and blooming. I is a concept that is very helpful when it is effectively communicate to the folks in charge. Speaking of them.  Do they know the problem exist?
 Dale



Dale, 
.  These are always a work in progress, especially when the piano is located in a busy rehearsal hall.  

Bob Maret
UCF

 

 


 

 

-----Original Message-----
From: Dale Erwin <erwinspiano at aol.com>
To: caut <caut at ptg.org>
Sent: Wed, Feb 16, 2011 1:57 am
Subject: Re: [CAUT] NY hammers


Hi Bob
Ok now its becoming clearer. If the standard center pin ht. was set at 145 mm on bass note 1 the bore would be 57 mm .But the bass bore on hammer 20 would be a whopping 60 mm.
 On note 88 ....  192m string ht. is quite usual. 194 or 195 is fairly common in the  aggrafe section.
 Seems like you've done the best to mitigate the problem.  Is it under warranty?No?... Well still, its always been way wrong  I forget ...did you  speak to a rep>?

 

Dale S. Erwin
www.Erwinspiano.com
Custom restoration
Ronsen Piano hammers
Join the Weickert felt Revolution
209-577-8397
209-985-0990



 

 

-----Original Message-----
From: Bob Maret <itunepiano at aol.com>
To: caut at ptg.org
Sent: Tue, Feb 15, 2011 11:57 am
Subject: [CAUT] NY hammers


 Here are some measurements from the 1992 D

Bass String height    202-205mm.  Bore is 55mm  Stack is shimmed 3mm here


Treble String height (spec) = 194mm:

Sec 2 string height  = 196-198mm  Bore 48mm  - stack is shimmed 3mm here

Sec 3 string height  =  198-198mm, Bore, 48mm - stack is shimmed 3mm here

Sec 4 string height  =  197-195mm  Bore 48mm  - stack is shimmed 3mm on left side, 1mm on right side

Sec 5 string height =  194-192mm  Bore 48mm - stack is shimmed 1mm on left and nothing on right.

Dip is 11mm,   Blow distance 49mm.   


#1 hammer flange Center pin height  is 147mm,  whip center pin height is 86mm

#88 hammer flange center pin height is 145mm   whip center pin height is 83mm

Bob Maret
UCF





 


 
 
 
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