[CAUT] measuring wippen weight

[Ken Zahringer]

Hey, Barbara,

In my (limited) experience, most of the time the wippen heel is very close
to being directly under the center of mass of the wippen.  In other words,
if you measure WW in the prescribed manner vs. just putting the wippen on
the scale, you will see very little difference in the scale reading.  It is
possible that you just moved the heel from slightly in front of the CM to
slightly behind it.  Try putting a wippen on the scale and just weighing it.
If it is a little over 17, chances are your new WW is just a little over the
actual weight.

My weighty opinion,
Ken Z.


On 9/26/07 7:40 AM, "Barbara Richmond" <piano57 at insightbb.com> wrote:

> Howdy,
>  
> I have some Renner Steinway wips that I'm altering to fit a Knabe.  Be joyful
> that I'm not going to tell the story of all the testing I've done on this
> action.  Anyway, besides replacing the flanges (obviously), I'm having to move
> the heel backwards (toward the flange).  When the wips were in their original
> state, the WW was 17.  Now with the heels moved and the little/angled Knabe
> flanges on, I can't get the wip to balance so I can get a reading.  Do I just
> hold it lightly against the "tower?" or tie it with thread or use a rubber
> band or just ignore it?
>  
> This wippen set up is the best (of the many) I've tried--feels good, less
> friction.  I'm just curious about the numbers.
>  
> Thanks,
>  
> Barbara Richmond, RPT
> near Peoria, Illinois
> 


-- 
Ken Zahringer, RPT
University of Missouri
School of Music

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