[pianotech] high leverage action

Jon Page jonpage at comcast.net
Tue Mar 17 05:21:13 PDT 2009


>With the whippen rail aligned so that the whippen flange centers
>are not on a parallel line to the capstans ?

Whenever I encounter this misalignment (which is quite often),
I relocate the stack such that the whippen ratio is the same
across the compass.

On one famous make, I needed to move the treble back 3 mm,
the bass back 6 mm, towards the bass .75mm and then raise it 3 mm.
Even with all that, the shanks were way off the rest cushions to
get after touch. Suffice it to say that the plate was higher than spec
and the hammer bore was shorter than spec (brand new - escaped
quality control and dealer prep).

As far as locating the whippen heel, if the location you desire
does not coincide with the default hole, cut off the dowel and
place the heel where you wish. First glue on to the ends of
each section (measure each from the front) and glue on
the rest by aligning with a straightedge, much like hanging hammers.

Actually, the dowel usually just pulls out with these nifty pliers:
http://tinyurl.com/cc9j4z
As Roger Jolly says, they're great for damper work.
-- 

Regards,

Jon Page
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