[pianotech] Not one of Bechstein's design triumphs.....

[Delwin D Fandrich]

>From a design perspective it is not OK to have a string resting against the
coil of a neighboring string. But this may not have started out as a design
issue. 

 

These holes would have been indexed in one of two ways: either "dimples"
were located in the original frame pattern or they were drilled using a
drilling template of some sort. In either case errors were common over a
production run. Pattern repairs were made by patternmakers whose knowledge
of the overall piano was probably limited. He would have little knowledge
(or concern) over a row of dimples moving a millimeter one way or another.
And that's all it would take to produce this error. 

 

Or the worker who made the drilling template could well have made it
slightly out of spec. 

 

In either case the problem would not discovered until this piano, and a few
dozen (or a few hundred) others, were well into production. And then it
would take some while and a lot more work for the problem to get fixed.

 

ddf

 

Delwin D Fandrich

Piano Design & Fabrication

6939 Foothill Court SW, Olympia, Washington 98512 USA

Phone  360.515.0119 - Cell  360.388.6525

del at fandrichpiano.com  <mailto:del at fandrichpiano.com> - ddfandrich at gmail.com

 

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of David Boyce
Sent: Thursday, March 29, 2012 1:16 AM
To: pianotech at ptg.org
Subject: Re: [pianotech] Not one of Bechstein's design triumphs.....

 

In general, then, do you design folks think its OK to have strings resting
against the coils on neighbouring strings?

Best regards,

David.



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