Counter bearing treatment

[Richard Brekne]

Hmm.... Why do both of my scaleing programs then demand to know this backlength
for all 88 strings. Also... when I fool around with this backlength (experimenting
with what the programs do and dont..) the figures for inharmonicity, tension, and
breaking point change significantly. Plus there have been several discussions on
this list which I have understood point to the importance of the backlength in
this regard... Have I missed something here ??? (grin.. wouldnt be the first time)

Richard Brekne
I.C.P.T.G.  N.P.T.F.
Bergen, Norway

Ron Nossaman wrote:

> >On the side... why do scaling programs not take into consideration the string
> >lenght from the tuning pin to the forward termination, but do take into
> account
> >the lenght behind the bridge ??
> >
> >Richard Brekne
>
> The distance from the hitch to the speaking length bridge pin becomes
> important when you ask a string winder to make you a set of bass strings to
> your specs. Without this measurement, the strings won't fit the piano.
> Other than that, the information isn't needed to refigure the scale with
> the original bridge and hitch configuration. As far as the actual scaling
> software goes, the only dimensions needed are core diameter, overall wrap
> diameter, unwrapped end lengths, wrap weighting factor, single or double
> wrap, speaking length, strings per unison, and pitch.
> Ron N