[CAUT] low friction bearings

David Ilvedson ilvey@sbcglobal.net
Tue, 11 Oct 2005 7:53:14 -0700


The reason, at present, we have different string lengths is spreading the hitchpins out on the plate, rather than in a line...for the plates sake...

David Ilvedson, RPT
Pacifica, California


----- Original message ----------------------------------------
From: "Andrew Anderson" <andrew@andersonmusic.com>
To: "College and University Technicians" <caut@ptg.org>
Received: 10/11/2005 4:43:46 AM
Subject: Re: [CAUT] low friction bearings


>That would call for a different, very precise hammer technique.

>Andrew

>At 11:00 PM 10/10/2005, you wrote:
>>Andrew:
>>>The ideal piano you describe would have to have the same length 
>>>strings, ie single-strung.  At some level of friction the different 
>>>non-speaking lengths on each end could become a problem for unison 
>>>stability.  You would also want pretty stiff tuning pins, not the 
>>>kind utilized in Boston uprights.
>>
>>Sure on the last point. But hypothetical pianos don't suffer the 
>>same practical constraints as normal pianos. ;-)
>>
>>It wouldn't be difficult to have identical total string lengths for 
>>each trichord.
>>
>>So do you (others) agree that it would be advantageous as proposed: 
>>"friction free" bearings, solid stable front and back lengths, and 
>>same total string lengths within a trichord?
>>
>>Stephen
>>
>>--
>>Dr Stephen Birkett
>>Piano Design Lab
>>Department of Systems Design Engineering
>>University of Waterloo, Waterloo ON Canada N2L 3G1
>>tel: 519-888-4567 Ext. 3792
>>Lab room E3-3160 Ext. 7115
>>mailto: sbirkett[at]real.uwaterloo.ca
>>http://real.uwaterloo.ca/~sbirkett
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