Pinning on new flanges

Horace Greeley hgreeley@stanford.edu
Tue, 24 Aug 2004 18:58:09 -0700


Avery,

At 06:44 PM 8/24/2004, you wrote:
>Wasn't it Rick Baldassin who said that more power could be had with a
>pinning in the 4-5 g. range?

Yes; and, he was quoting what has been pretty well established as being a 
reliable, overall standard.

Best.

Horace



>Avery
>
>>    As to "power",  we "Jolly" well know that there is a loss of power and
>>tone when the hammer flange is too loose, so I suggest that power will suffer
>>with looser pinning, (up to a point). The tighter pinning is of major 
>>effect on
>>softer playing, since under a very hard blow, the felt in the bushing is
>>distorted enough so that only one side of the bushing is really in firm 
>>contact,(on
>>a hammer flange, it is the upper part of the bushing that is taking the 
>>load).
>>  When the bushing is thus distorted, its friction from the circular
>>compression that we see in static testing is greatly reduced.
>>Regards,
>>
>>Ed Foote RPT
>>http://www.uk-piano.org/edfoote/index.html
>>www.uk-piano.org/edfoote/well_tempered_piano.html
>>
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>
>_______________________________________________
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