Restoring Crown

[Richard Brekne]

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Robert Scott wrote:

> Glenn C. writes:
>
> > Story & clark used to have those store demonstration 3-4 inch wide
> > strips of
> > soundboard with a tuning fork screwed to the middle and a tension rack
> > below.
> > The fork was struck and then the rack engaged to produce varying amounts
> > of
> > crown in this little strip of board. Of course the tuning fork tone
> > increased
> > dramatically when crowned. Problem is, it's an awfully small footage of
> > soundboard, is this really a reliable proof of crown producing
> > amplification
> > (or at least good transmission) ?
>
> No, I don't think so.  All it really proves to me is that when the board
> is flexed, the nut and washer holding the tuning fork to the board make
> better contact with the board.  It is not very representative of what goes
> on with a glued bridge instead of a screwed tuning fork.
>
> -Robert Scott
>   Ypsilanti, Michigan
>

Hey Robert, FWIW, the model I have doesnt have a nut and washer. It has a
small bridge thingy with the tuning fork mounted snuggly in it.

RicB


--
Richard Brekne
RPT, N.P.T.F.
UiB, Bergen, Norway
mailto:rbrekne@broadpark.no
http://home.broadpark.no/~rbrekne/ricmain.html
http://www.hf.uib.no/grieg/personer/cv_RB.html


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