More on Knuckles

[John Minor]

>
> I note the Downweight for the existing configuration them replace this with one
> of the samples and the hammer from the kit and note the Downweight for this
> configuration. I do the same for each of the samples from the kit.  I now will
> have five action arm distances coupled with a Downweight for each one.  Armed
> with this information I can perform a linear regression to get a unique equation
> that will tell me what I can expect for a given knuckle configuration.  Suppose
> I have ordered one of those sets of shanks from Steinway labeled "Genuine".  I
> can measure the action arm distance plug it into the equation and get a
> predicted Downweight.  From this I can decide whether using these "vale la Pena"
> (is worth the effort).

Michael: How do you account for "friction" variable in the equation!  The
entire method is based on having friction consistent, which I find to be
to be a good part of the excessive downweight.

Thanks for the reply, and the knuckle info... : )