Better Bass Scale for M&H A

[Roger Jolly]

Hi Terry,
                As Del has shown on the Mason A.   The back winding is so 
stiff, you end up with a theoretical termination point only 20mm from the 
rear bridge pin at AO.

The other question, I'm not sure I know the answer. But a few things come 
to mind..
1. Cost and time of installation.
2. The sales dept is demanding longer string length for bragging rights. 
Hence the bridge is installed too far back.  To hell with the consequences.
3.  With out doing a more complete analysis, my gut feel tells me there is 
very little pivoting at the traditional hitch pins. I think both mass and 
string stiffness will conspire to damp any movement in this 
section.  That's why I used the term, Theroretical termination point.
4.  I have never seen bass strings tied off in this manner. ( Must lead a 
sheltered life.) So maybe I thought of some thing new.  Simple I know.

Regards Roger




At 03:32 PM 11/2/02 -0500, you wrote:
>Hi Roger, thanks. Why don't we see German loops more often? Is it because 
>the common type are easier/faster/cheaper to produce? Do the German double 
>loops have any track record of significant failure?
>
>I can easily see where the common loop would make the back length very 
>stiff, but would that necessarily restrict bass bridge movement - the 
>common type should still pivot on the hitch pin - how does a more flexible 
>rear length free up the bridge?
>
>Terry Farrell
>
>----- Original Message -----
>From: "Roger Jolly" <roger.j@sasktel.net>
>To: "Pianotech" <pianotech@ptg.org>
>Sent: Saturday, November 02, 2002 10:18 AM
>Subject: Re: Better Bass Scale for M&H A
>
>
> > Hi Terry,
> >                Wrap twice around hitch pin, and 4 times around active
> > length just in front of hitch pin.
> > Termination length drops to about 7-8mm instead of 40-50mm.  This makes a
> > huge difference to the stiffness applied to the bridge.  Leaves it free to
> > move.
> > If you only have about 20mm of active back scale length, then the
> > termination has a serious negative effect on the bridge.
> > It would be interesting to have Del move a bridge and use German loops, I
> > think the results would be dramatic.
> > Regards Roger
> >
> > At 10:32 PM 11/1/02 -0500, you wrote:
> > >How about going one step further back. What is a German loop? Thanks.
> > >
> > >Terry Farrell
> >
> >
> > _______________________________________________
> > pianotech list info: https://www.moypiano.com/resources/#archives
>
>_______________________________________________
>pianotech list info: https://www.moypiano.com/resources/#archives