Weird Frontweights

Richard Brekne Richard.Brekne@grieg.uib.no
Mon, 08 Oct 2001 21:08:20 +0200



Delwin D Fandrich wrote:

>

> The concept of
> > individually weighing off of keys seems to be a very valid one to me, but
> > while doing it, one would have to constantly be asking oneself; "Why is
> >this one so much different than that one?"    Hope this isn't inappropriately
> >simple.
> ---------------------------------------------------------------
>
> No, it really is that simple.
>
> Most, if not all, factory 'individual key weighting' is done to make up for
> either improper action geometry or erratic action center or key friction.
> Mostly, the latter.

Yes... agreed... yet lets not confuse this use of "individual key weighting"
with that of the Stanwood proceedure. There too the keys are individually
weighted. The fact that one is relating the weigh off to an even SW curve makes
even traditional weighing off much more dependable. Combined with a knowledge
that if FW's vary even more then a gram or so in the face of such an even  SW
curve, this reveals that there are either friction or geometry problems that
need to be dealt with.  Said another way.... if SW's and FW's are both set to
appropriate and dead on even curves.. the only things left that can account for
uneven touch weight are friction and leverage..... or what ? That fact should be
a real eye opener for factory and freelance techs alike if you ask me.

> Neither should be acceptable at the factory level. To attempt, then, to
> cover up either of these problems by adding random amounts of lead to random
> keys is unacceptable.
>

100 percent in agreement here.

>
> Del

--
Richard Brekne
RPT, N.P.T.F.
Bergen, Norway
mailto:rbrekne@broadpark.no




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