What's all this I hear about Inertia ?

[David C. Stanwood]

Richard,

Your (my) formula is wrong.. WW should be WBW.

For any piano key FW + BW (Top Action BW) is always the same.   If 
you change reduce FW by an amount the BW will increase by the same 
amount and vice versa so the calculation of R remains the same...

David S

><snip> Changing the Front Weight most certainly and undeniably does 
>change the (SW) ratio. A most casual of glances at Stanwoods formula 
>reveals this. Again...this is part of why you will find any direct 
>translation to another protocoll... the distance one for example... 
>quite difficult at best.
>
>Review Stanwoods formula.   R =  (BW + FW - WW) / SW
>
>Clearly a change in FW changes the value of the entire left side of 
>the formula, and hence the equivalent  R on the right side.
>
>Cheers
>RicB