Downbearing?

[Overs Pianos]

>Hi folks
>
>Another little bit that has dawned on me whilst pushing numbers 
>around is that you can actually lower the amount of downwards 
>pressure on the bridge for same string tension by lengthening the 
>backscale [at the same downbearing measurement].

Indeed. And for those sections which have a longer backscale, you 
will require a higher downbearing setting to achieve the desired 
angle of downbearing. Furthermore, when the piano is strung, a 
shorter backscale will lose a lot more of its unstrung angle, 
compared to a longer backscale.

>Interesting I thought.  What would the tradeoffs be comparing higher 
>tensioned scales coupled with lower downward force levels visa vi 
>lower tensioned scales with higher downward force levels ?

I would expect the higher downbearing/lower tension scenario to 
result in a slightly lower impedance. But I haven't done any bench 
testing to confirm this. Nor have I tried to resolve it 
mathematically.

Ron O.
-- 
OVERS PIANOS - SYDNEY
    Grand Piano Manufacturers
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Web http://overspianos.com.au
mailto:ron at overspianos.com.au
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