Fw: lead waits

[Jenneetah]

At 10:29 PM -0700 9/3/04, Horace Greeley wrote:
>>You now have a set of leveling weights, custom-tailored expressly 
>>for that piano.
>
>Sorry.  I am not usually this direct, but this one really simply 
>fails on its premise.  Rethink this a bit and it will be clear.
>
>Best.
>
>Horace

Forgive me as I think out loud, Horace. Variations in weight placed 
on a capstan will vary the key height. In one set of leveling 
weights, there may be minute variations among the weights (most 
likely, under a gram at most). However once these are installed for a 
key leveling session, their effect is a constant throughout the 
session. They are standing in for the weight of the reps (and the 
shanks/hammers on top of them) on the caps. Their weight can be 
calculated: (BalanceWeight - FrontWeight)*KeyRatio.

The difference between a leveling weight and weight of action parts 
on that note, as calculated above, will  show up as a  difference in 
key height when read with the leveling weight and when read with the 
top action back on. Most likely, the bigger player in this is the 
weight of action parts.

We've all seen this happen: a nice key leveling after a session with 
the weights looks bumpy as soon as the top action goes back on. 
Certainly there may be other things at work here (maybe poor mating 
between the action bracket feet and the keyframe action cleats), but 
this one, however slight, is undeniable.

I do remember 20 years ago, Wil Snyder mention that he and David had 
gotten an average of "action weight at the cap" so that they could 
tune up a set of leveling weights.  I don' remember hearing that they 
thought their time was well spent after having done it.

Yes, I'm probably putting to sharp a point on this. But it won't be 
the first time on this list that a a point has been sharpen down to 
the width of a couple of molecules of graphite, leaving room for the 
next person to sharpen in further still.

I agree, Horace, as a hair worth splitting, this one fails to measure 
up. Or do I miss your point?