[pianotech] high leverage action

Richard Brekne ricb at pianostemmer.no
Tue Mar 17 00:54:53 PDT 2009


Hi Gene

Is this the way the action was originally configured ? With the whippen 
rail aligned so that the whippen flange centers are not on a parallel 
line to the capstans ? This is a Knabe right ?  Any of you guys over 
there familiar with Knabes got any good info regarding this ?

You are correct in thinking that the whippens will be lifted differently 
across the key-board in the condition you describe below. That is to 
say, the capstans will raise equally, but the whippen lever being 
positioned differently will respond differently.

Cheers
RicB

    Right now, the only thing on the action that is paralell to the
    whippen rail is the hammer rail and maybe the back rail. Capstan
    line is different in bass and treble by 3mm in relation to the
    whippen rail - but the line is straight. Balance rail  is also
    different.It makes sense that the constant KR - regardless of the
    overall key length - would yield a constant rise at the capstan but
    if the whippen heals are aligned to the whippen rail they will
    differ slightly in alignment with the capstans by 3mm across the 
    action - changing WW. Am I reading too much into this?





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