[pianotech] 1098 bore correction

[Encore Pianos]

My question still remains:  How is bore determined for an upright piano, given varying degrees of rake?

 

Will

 

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Dale Erwin
Sent: Thursday, February 14, 2013 12:22 PM
To: pianotech at ptg.org
Subject: [pianotech] 1098 bore correction

 

Jon 

 Sorry. Ray wasn't reading far enough. The spec is 2 1/4 bass and 2 5/8 tenor with 6 or 7 degrees of rake. 

  He says the bore can vary a little.  What a shock.

Dale Erwin R.P.T.
Erwin's Piano Restoration Inc.
Mason & Hamlin/Steinway/U.S. pianos
www.Erwinspiano.com
Phone: 209-577-8397

 
  

 

-----Original Message-----
From: Ray Negron <ray at ronsenhammer.com>
To: 'Dale Erwin' <erwinspiano at aol.com>
Sent: Thu, Feb 14, 2013 7:05 am
Subject: RE: from Jon page on p-tech

Stock bore is 2 1/8” bass & 1 13/16 treble. 

 

Ray Negron

Ronsen Piano Hammer Co.

1-800-864-0233

ray at ronsenhammer.com 

 

 

 

From: Dale Erwin [mailto:erwinspiano at aol.com <mailto:erwinspiano at aol.com?> ] 
Sent: Thursday, February 14, 2013 9:38 AM
To: ray at ronsenhammer.com
Subject: from Jon page on p-tech

 

I was handed a project that another tech could not finish due to a family
illness. New hammers are in the offing but I have a few concerns. 
First, the shanks mic .210" but the hammers were bored to .218" (7/32). 
That is way too loose. Could a paper shim be glued in on the non-string side
of the molding without causing a problem down the line? Secondly, the
hammers are bored close to the same length as these old, worn ones and there
are shims under the hammer rail already. What is a stock bore 
for a S&S 1098?   Maybe I should plug these holes and rebore to bring 
the action parameters to original specs.
 
Regards,
 
Jon Page

 

Dale Erwin R.P.T.
Erwin's Piano Restoration Inc.
Mason & Hamlin/Steinway/U.S. pianos
www.Erwinspiano.com
Phone: 209-577-8397

 
  

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