String termination question

David Ilvedson ilvey at sbcglobal.net
Mon Jan 14 12:14:19 MST 2008


Has anyone brought some piano wire up to pitch on a notched, but un-pinned bridge cap?   Just to see how it sounded and behaved?   I'm wondering what the difference is with the notch termination and pin termination...

David Ilvedson, RPT
Pacifica, CA  94044

----- Original message ----------------------------------------
From: "Ron Nossaman" <rnossaman at cox.net>
To: "Pianotech List" <pianotech at ptg.org>
Received: 1/14/2008 11:00:04 AM
Subject: Re: String termination question


> >Now we have good termination, but we are
>> now also stuck with two axis of termination. One against the side of the pin
>> and one against the notch in the bridge. Hence the need to be careful that
>> both those axis are in alignment. 

>One more time. There is no need for careful alignment other 
>than keeping the notch edge out of the speaking length. The 
>pin is the termination. The PIN is the termination. THE PIN IS 
>THE TERMINATION. That is in both the vertical and horizontal 
>excursion, just as the capo is the termination in both the 
>vertical and horizontal excursion. If the pin is tight in the 
>cap at the cap surface, where it won't flagpole, there won't 
>be the classic false beat even with the notch clear behind the 
>pin. The beat is NOT caused by the string sliding up and down 
>the pin.
>Ron N


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