Pinning on new flanges

[Horace Greeley]

Don,

Quoting Don <pianotuna@accesscomm.ca>:

> Hi Avery,
> 
> I think Chris Robinson did some analysis work with a "real time
> analyser"
> on flange pinning.

Yes.  So far, Chris' work is the most reliable.

Cheers!

Horace



> 
> 
> At 08:44 PM 24/08/2004 -0500, you wrote:
> >Wasn't it Rick Baldassin who said that more power could be had with a
> >pinning in the 4-5 g. range?
> >
> >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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> >
> >_______________________________________________
> >pianotech list info: https://www.moypiano.com/resources/#archives
> >
> >
> 
> Regards,
> Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T.
> 
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